Пример #1
0
void
nco_ppc_att_prc /* [fnc] Create PPC attribute */
(const int nc_id, /* I [id] Input netCDF file ID */
 const trv_tbl_sct * const trv_tbl) /* I [sct] GTT (Group Traversal Table) */
{
  /* NB: Can fail when output file has fewer variables than input file (e.g., file was subsetted)
     20150126: Deprecated, debugged and functionality moved to nco_xtr_dfn() */
  aed_sct aed;
  char att_nm_dsd[]="least_significant_digit";
  char att_nm_nsd[]="number_of_significant_digits";
  int grp_id; /* [id] Group ID */
  int var_id; /* [id] Variable ID */
  int ppc;
  int rcd=NC_NOERR;
  long att_sz;
  nc_type att_typ;
  ptr_unn att_val;
  int ppc_xst;

  for(unsigned idx_tbl=0;idx_tbl<trv_tbl->nbr;idx_tbl++){
    ppc=trv_tbl->lst[idx_tbl].ppc;
    if(ppc == NC_MAX_INT) continue;
    trv_sct var_trv=trv_tbl->lst[idx_tbl];
    aed.var_nm=strdup(var_trv.nm);
    (void)nco_inq_grp_full_ncid(nc_id,var_trv.grp_nm_fll,&grp_id); /* Obtain group ID */
    (void)nco_inq_varid(grp_id,var_trv.nm,&var_id); /* Obtain variable ID */
    att_val.ip=&ppc;
    aed.id=var_id;
    aed.val=att_val;
    if(var_trv.flg_nsd) aed.att_nm=att_nm_nsd; else aed.att_nm=att_nm_dsd;
    aed.type=NC_INT; /* NB: Buggy: value changes if it is assigned outside for loop */
    aed.sz=1L;
    aed.mode=aed_create; 
    rcd=nco_inq_att_flg(nc_id,var_id,aed.att_nm,&att_typ,&att_sz);
    if(rcd == NC_NOERR && aed.sz == att_sz && aed.type == att_typ){
      (void)nco_get_att(nc_id,var_id,aed.att_nm,&ppc_xst,att_typ);
      if(ppc < ppc_xst) aed.mode=aed_overwrite;
      else continue; /* no changes needed */
    } /* endif */
    (void)nco_aed_prc(nc_id,var_id,aed);
  } /* end loop */
} /* end nco_ppc_att_prc() */
Пример #2
0
void
nco_ppc_set_dflt /* Set PPC value for all non-coordinate variables for --ppc default  */
(const int nc_id, /* I [id] netCDF input file ID */
 const char * const ppc_arg, /* I [sng] User input for precision-preserving compression */
 trv_tbl_sct * const trv_tbl) /* I/O [sct] Traversal table */
{
  char *sng_cnv_rcd=NULL_CEWI; /* [sng] strtol()/strtoul() return code */
  int ppc_val;
  nco_bool flg_nsd=True; /* [flg] PPC is NSD */

  if(ppc_arg[0] == '.'){
    flg_nsd=False; /* DSD */
    ppc_val=(int)strtol(ppc_arg+1L,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
    if(*sng_cnv_rcd) nco_sng_cnv_err(ppc_arg+1L,"strtol",sng_cnv_rcd);
  }else{ /* NSD */
    ppc_val=(int)strtol(ppc_arg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
    if(*sng_cnv_rcd) nco_sng_cnv_err(ppc_arg,"strtol",sng_cnv_rcd);
    if(ppc_val <= 0){
      (void)fprintf(stdout,"%s ERROR Number of Significant Digits (NSD) must be positive. Default is specified as %d. HINT: Decimal Significant Digit (DSD) rounding does accept negative arguments (number of digits in front of the decimal point). However, the DSD argument must be prefixed by a period or \"dot\", e.g., \"--ppc foo=.-2\", to distinguish it from NSD quantization.\n",nco_prg_nm_get(),ppc_val);
      nco_exit(EXIT_FAILURE);
    } /* endif */    
  } /* end if */

  for(unsigned idx_tbl=0;idx_tbl<trv_tbl->nbr;idx_tbl++){
    if(trv_tbl->lst[idx_tbl].nco_typ == nco_obj_typ_var && !trv_tbl->lst[idx_tbl].is_crd_var){
      /* Allow "default" to affect only floating point types */
      if(trv_tbl->lst[idx_tbl].var_typ == NC_FLOAT || trv_tbl->lst[idx_tbl].var_typ == NC_DOUBLE){
	/* Prevent "default" from applying to coordinate and bounds variables */
	int grp_id;
	int var_id;
	nco_inq_grp_full_ncid(nc_id,trv_tbl->lst[idx_tbl].grp_nm_fll,&grp_id);
	nco_inq_varid(grp_id,trv_tbl->lst[idx_tbl].nm,&var_id);
	if(!nco_is_spc_in_cf_att(grp_id,"bounds",var_id) && !nco_is_spc_in_cf_att(grp_id,"climatology",var_id) && !nco_is_spc_in_cf_att(grp_id,"coordinates",var_id)){
	  trv_tbl->lst[idx_tbl].ppc=ppc_val;
	  trv_tbl->lst[idx_tbl].flg_nsd=flg_nsd;
	} /* endif */
      } /* endif */
    } /* endif */
  } /* endfor */
} /* end nco_ppc_set_dflt() */
Пример #3
0
int                                  /* O [rcd] Return code */
nco_cnv_cf_cll_mth_add               /* [fnc] Add cell_methods attributes */
(const int out_id,                   /* I [id] netCDF file ID */
 var_sct * const * const var,        /* I [sct] Variable to reduce (e.g., average) (destroyed) */
 const int var_nbr,                  /* I [nbr] Number of variables to be defined */
 dmn_sct * const * const dmn_rdc,    /* I [sct] Dimensions over which to reduce variable */
 const int dmn_nbr_rdc,              /* I [sct] Number of dimensions to reduce variable over */
 const int nco_op_typ,               /* I [enm] Operation type, default is average */
 gpe_sct *gpe,                       /* I [sng] Group Path Editing (GPE) structure */
 const clm_bnd_sct * const cb,       /* I [sct] Climatology bounds structure */
 const trv_tbl_sct * const trv_tbl)  /* I [sct] Traversal table */
{
  /* Purpose: Add/modify CF cell_methods attribute
     http://cfconventions.org/Data/cf-conventions/cf-conventions-1.7/build/cf-conventions.html#cell-methods
     
     cell_methods values and description:
     point	: Data values are representative of points in space or time (instantaneous)
     sum	: Data values are representative of a sum or accumulation over the cell
     maximum_absolute_value	: Maximum absolute value
     maximum	: Maximum
     median	: Median
     mid_range	: Average of maximum and minimum
     minimum	: Minimum
     mean	: Mean (average value)
     mode	: Mode (most common value)
     range	: Absolute difference between maximum and minimum
     standard_deviation : Standard deviation
     variance	: Variance
     
     NCO operation types:
     avg Mean value
     avgsqr Mean of sum of squares
     mabs Maximum absolute value
     max Maximum value
     mebs Mean absolute value
     mibs Minimum absolute value
     min Minimum value
     rms Root-mean-square (normalized by N)
     rmssdn Root-mean square (normalized by N-1)
     sqravg Square of the mean
     sqrt Square root of the mean
     ttl Sum of values */

  const char fnc_nm[]="nco_cnv_cf_cll_mth_add()"; /* [sng] Function name */

  aed_sct aed; /* [sct] Attribute-edit information */

  char att_op_sng[23]; /* [sng] Operation type (longest is nco_op_mabs which translates to "maximum_absolute_value") */

  char *att_val=NULL; /* [sng] Coordinates attribute */
  char *att_val_cpy; /* [sng] Copy of attribute */
  char *grp_out_fll=NULL; /* [sng] Group name */
  char *sbs_ptr; /* [sng] Pointer to substring */
  char *cll_mth_clm; /* [sng] Cell methods for climatology */
  
  int *dmn_mch; /* [idx] Indices of dimensions reduced in this variable */

  int dmn_idx_rdc;
  int dmn_idx_var;
  int dmn_nbr_mch; /* [nbr] Number of dimension names to add to cell_methods */
  int grp_out_id; /* [ID] Group ID (output) */
  int nco_op_typ_lcl; /* [enm] Operation type, default is average */
  int rcd=NC_NOERR; /* [rcd] Return code */
  int var_idx;
  int var_out_id; /* [ID] Variable ID (output) */

  long int att_lng; /* [nbr] Length of attribute string */
  
  nc_type att_typ; /* [nbr] Attribute type */

  nco_bool FIRST_WARNING=True;
  nco_bool flg_dpl; /* [flg] New cell_methods attribute duplicates old */
  nco_bool mlt_dmn_rdc; /* [flg] Multiple dimension reduction flag */

  size_t dmn_sng_lng; /* [nbr] Length of dimension string */
  size_t sbs_sng_lng; /* [nbr] Length of substring */

  trv_sct *var_trv=NULL;  /* [sct] Variable GTT object */

  /* Initialize unchanging structure members */
  aed.att_nm=strdup("cell_methods");
  aed.type=NC_CHAR;

  /* Allocate space for maximum number of matching dimensions */
  dmn_mch=(int *)nco_calloc(dmn_nbr_rdc,sizeof(int));

  if(cb){
    if(cb->bnd2clm || cb->clm2clm) cll_mth_clm=strdup("time: mean within years time: mean over years");
    if(cb->clm2bnd) cll_mth_clm=strdup("time: mean");
  } /* !cb */

  /* Process all variables */
  for(var_idx=0;var_idx<var_nbr;var_idx++){ 

    /* Obtain variable GTT object using full variable name */
    var_trv=trv_tbl_var_nm_fll(var[var_idx]->nm_fll,trv_tbl);

    /* Edit group name for output */
    if(gpe) grp_out_fll=nco_gpe_evl(gpe,var_trv->grp_nm_fll); else grp_out_fll=(char *)strdup(var_trv->grp_nm_fll);

    /* Obtain output group ID */
    (void)nco_inq_grp_full_ncid(out_id,grp_out_fll,&grp_out_id);

    /* Memory management after current extracted group */
    if(grp_out_fll) grp_out_fll=(char *)nco_free(grp_out_fll);

    /* Get variable ID */
    (void)nco_inq_varid(grp_out_id,var_trv->nm,&var_out_id);

    /* Initialize attribute-edit structure for this variable */
    aed.var_nm=var_trv->nm;
    aed.id=var_out_id;
    aed.sz=0L;
    dmn_nbr_mch=0;
    flg_dpl=False;

    if(cb){
      /* Does variable use time coordinate? */
      for(dmn_idx_var=0;dmn_idx_var<var_trv->nbr_dmn;dmn_idx_var++)
	if(!strcmp(var_trv->var_dmn[dmn_idx_var].dmn_nm,cb->tm_crd_nm)) break;
      if(dmn_idx_var < var_trv->nbr_dmn){
	/* Stamp with appropriate cell_methods temporal attribute */
	att_val=strdup(cll_mth_clm);
	aed.sz=strlen(att_val);
	aed.type=NC_CHAR;
	aed.val.cp=att_val;
	aed.mode=aed_overwrite;
	(void)nco_aed_prc(grp_out_id,var_out_id,aed);
	if(att_val) att_val=(char *)nco_free(att_val);
	continue;
      } /* !dmn_idx_var */
    } /* !cb */

    /* cell_methods format: blank-separated phrases of form "dmn1[, dmn2[...]]: op_typ", e.g., "lat, lon: mean" */ 
    for(dmn_idx_var=0;dmn_idx_var<var_trv->nbr_dmn;dmn_idx_var++){
      for(dmn_idx_rdc=0;dmn_idx_rdc<dmn_nbr_rdc;dmn_idx_rdc++){
        assert(dmn_rdc[dmn_idx_rdc]->nm_fll);
        /* Compare full names */
        if(!strcmp(var_trv->var_dmn[dmn_idx_var].dmn_nm_fll,dmn_rdc[dmn_idx_rdc]->nm_fll)){
          /* Add length of each matching dimension to accumulating attribute size */
          aed.sz+=strlen(dmn_rdc[dmn_idx_rdc]->nm);
          dmn_mch[dmn_nbr_mch++]=dmn_idx_rdc;
        } /* !match */
      } /* dmn_idx_rdc */
    } /* dmn_idx_var */

    assert(dmn_nbr_mch > 0);

    /* Preserve rule to always return averages (never extrema or other statistics) of coordinates */
    if(var[var_idx]->is_crd_var) nco_op_typ_lcl=nco_op_avg; else nco_op_typ_lcl=nco_op_typ;

    /* NUL-terminate before concatenation */
    att_op_sng[0]='\0';
    switch(nco_op_typ_lcl){
      /* Next five operations are defined in CF Conventions */
    case nco_op_avg: strcpy(att_op_sng,"mean"); break;
    case nco_op_min: strcpy(att_op_sng,"minimum"); break;
    case nco_op_max: strcpy(att_op_sng,"maximum"); break;
    case nco_op_ttl: strcpy(att_op_sng,"sum"); break;
    case nco_op_avgsqr: strcpy(att_op_sng,"variance"); break; /* Mean of sum of squares */
      /* Remaining operations are supported by NCO yet are not in CF Conventions */
    case nco_op_mabs: strcpy(att_op_sng,"maximum_absolute_value"); break; /* Maximum absolute value */
    case nco_op_mebs: strcpy(att_op_sng,"mean_absolute_value"); break; /* Mean absolute value */
    case nco_op_mibs: strcpy(att_op_sng,"minimum_absolute_value"); break; /* Minimum absolute value */
    case nco_op_sqravg: strcpy(att_op_sng,"square_of_mean"); break; /* Square of mean */
    case nco_op_sqrt: strcpy(att_op_sng,"square_root_of_mean"); break; /* Square root of mean */ 
    case nco_op_rms: strcpy(att_op_sng,"root_mean_square"); break; /* Root-mean-square (normalized by N) */
    case nco_op_rmssdn: strcpy(att_op_sng,"root_mean_square_nm1"); break; /* Root-mean square normalized by N-1 */
    case nco_op_nil: /* nco_op_nil, Undefined operation type */
      if(nco_dbg_lvl_get() >= nco_dbg_var) (void)fprintf(stdout,"%s: DEBUG %s reports variable %s cell_method not implemented for operation %d\n",nco_prg_nm_get(),fnc_nm,var_trv->nm_fll,nco_op_typ);
      continue;
    } /* End switch */

    /* Initialize to size of ": " plus length of operation string */
    aed.sz+=2L+strlen(att_op_sng);
    /* Add room for commas and spaces, i.e., "dmn1, dmn2, dmn3" */
    if(dmn_nbr_mch > 1) aed.sz+=2*(dmn_nbr_mch-1);
    /* Add room for NUL-terminator */
    aed.val.cp=(char *)nco_malloc((aed.sz+1L)*sizeof(char));
    aed.val.cp[0]='\0';

    /* Build single string by concatenating known matches */
    for(int dmn_idx_mch=0;dmn_idx_mch<dmn_nbr_mch;dmn_idx_mch++){
      (void)strcat(aed.val.cp,dmn_rdc[dmn_mch[dmn_idx_mch]]->nm);
      if(dmn_idx_mch<dmn_nbr_mch-1) (void)strcat(aed.val.cp,", ");
    } /* dmn_idx_mch>=dmn_nbr_mch */
    (void)strcat(aed.val.cp,": ");
    (void)strcat(aed.val.cp,att_op_sng);

    /* 20150625: Older versions of CAM, e.g., CAM3, used "cell_method" instead of "cell_methods" 
       If old attribute is not deleted then the output file will contain both attributes
       Does variable already have "cell_method" attribute? */
    strcpy(aed.att_nm,"cell_method");
    rcd=nco_inq_att_flg(grp_out_id,var_out_id,aed.att_nm,&att_typ,&att_lng);
    if(rcd == NC_NOERR){
      if(FIRST_WARNING) (void)fprintf(stderr,"%s: WARNING: Variable \"%s\" uses the non-standard attribute name \"cell_method\" instead of \"cell_methods\", the correct attribute name. The CAM3 model (and others?) have this problem. Expect \"double attributes\" in output. This message is printed only once per invocation, although the problem likely occurs in more variables.\n",nco_prg_nm_get(),aed.var_nm);
      FIRST_WARNING=False;
    } /* endif attribute exists */

    /* Does variable already have "cell_methods" attribute? */
    strcpy(aed.att_nm,"cell_methods");
    rcd=nco_inq_att_flg(grp_out_id,var_out_id,aed.att_nm,&att_typ,&att_lng);
    if(rcd == NC_NOERR){
      if(att_typ == NC_STRING) (void)fprintf(stderr,"%s: WARNING %s reports existing cell_methods attribute for variable %s is type NC_STRING. Unpredictable results...\n",nco_prg_nm_get(),fnc_nm,aed.var_nm);
      if(att_typ != NC_STRING && att_typ != NC_CHAR) (void)fprintf(stderr,"%s: WARNING %s reports existing cell_methods attribute for variable %s is type %s. Unpredictable results...\n",nco_prg_nm_get(),fnc_nm,aed.var_nm,nco_typ_sng(att_typ));

      /* Often climatologies are multiply-averaged over time
	 NCO's treatment of this has changed with time
	 pre-20140131: 
	 NCO has no special treatment of cell_methods
	 20140131: 
	 First NCO implementation (ncra, ncea, ncwa) of cell_methods with 
	 20150625: 
	 For example, climate model output is often archived as monthly means in each gridcell
	 cell_methods attributes of these monthly data begin as "time: mean" (i.e., monthly mean).
	 We then create a climatology by a sequence of one or two more temporal-averaging steps
	 The one-step method puts all the months in the hopper and averages those
	 Variables in the resultiing file may have cell_methods = "time: mean time: mean"
	 The two-step method first averages the months into four climatological seasons
	 Then it averages those four seasons into the climatological annual mean
	 Variables in the resultiing file may have cell_methods = "time: mean time: mean time: mean"
	 To avoid this redundancy, we check that the new cell_method does not duplicate the old 
	 If it would, then skip adding the new
	 20160418: 
	 Treatment of multiply-time-averaged quantities requires climatology bounds attribute
	 One-step methods (e.g., monthly mean) should have time-bounds attribute
	 cell_methods = "time: mean"
	 Two-step methods (e.g., climatological March) should have climatology-bounds attribute
	 cell_methods = "time: mean within years time: mean over years"
	 Three-step methods (e.g., climatological MAM) should have climatology-bounds attribute
	 cell_methods = "time: mean within years time: mean over years"
	 Four-step methods (e.g., climatological ANN) should have time-bounds attribute
	 cell_methods = "time: mean" */
      ptr_unn val_old; /* [sng] Old cell_methods attribute */
      val_old.vp=(void *)nco_malloc((att_lng+1L)*sizeof(char));
      (void)nco_get_att(grp_out_id,var_out_id,aed.att_nm,val_old.vp,NC_CHAR);
      val_old.cp[att_lng]='\0';
      if(strstr(val_old.cp,aed.val.cp)) flg_dpl=True;
      if(val_old.vp) val_old.vp=(void *)nco_free(val_old.vp);
      
      aed.mode=aed_append;
      /* Insert space between existing attribute and appended attribute */
      att_val_cpy=(char *)strdup(aed.val.cp);
      /* Add one for space character */
      aed.sz++;
      /* Add one for NUL-terminator */
      aed.val.cp=(char *)nco_realloc(aed.val.cp,(aed.sz+1L)*sizeof(char));
      aed.val.cp[0]=' ';
      aed.val.cp[1]='\0';
      (void)strncat(aed.val.cp,att_val_cpy,aed.sz-1L);
      if(att_val_cpy) att_val_cpy=(char *)nco_free(att_val_cpy);
    }else{ /* !cell_methods attribute already exists */
      aed.mode=aed_create;
    } /* !cell_methods attribute already exists */

    /* Edit attribute */
    if(!flg_dpl) (void)nco_aed_prc(grp_out_id,var_out_id,aed);

    /* 20150308 */
    /* Does variable already have "coordinates" attribute?
       NB: This reuses att_nm which has only enough space to hold "cell_methods" */
    strcpy(aed.att_nm,"coordinates");
    rcd=nco_inq_att_flg(grp_out_id,var_out_id,aed.att_nm,&att_typ,&att_lng);
    if(rcd == NC_NOERR && att_typ == NC_CHAR){
      /* Remove reduced dimensions from coordinates string
	 coordinates format: blank-separated names of form "dmn1 [dmn2 [...]] dmnN", e.g., "time lat lon" */ 
      /* Add room for NUL-terminator */
      att_val=(char *)nco_malloc((att_lng+1L)*sizeof(char));
      rcd=nco_get_att(grp_out_id,var_out_id,aed.att_nm,att_val,att_typ);
      /* Reset value from previous use */
      aed.val.cp[0]='\0';
      att_val[att_lng]='\0';
      mlt_dmn_rdc=False;
      assert(rcd == NC_NOERR);
      for(dmn_idx_var=0;dmn_idx_var<var_trv->nbr_dmn;dmn_idx_var++){
	for(dmn_idx_rdc=0;dmn_idx_rdc<dmn_nbr_rdc;dmn_idx_rdc++){
	  /* Is reduced dimension in variable? */
	  if(!strcmp(var_trv->var_dmn[dmn_idx_var].dmn_nm_fll,dmn_rdc[dmn_idx_rdc]->nm_fll)){
	    if(mlt_dmn_rdc){
	      /* At least one other dimension has already been reduced/excised
		 Hence multiple dimensions of this variable may be reduced
		 Start next excision from ending point of last excision, not from disk-values */
	      strcpy(att_val,aed.val.cp);
	      att_lng=strlen(aed.val.cp);
	    } /* endif */
	    /* Is dimension in current (possibly locally-modified) "coordinates" attribute? NB: Assume short name not full name */
	    if((sbs_ptr=strstr(att_val,dmn_rdc[dmn_idx_rdc]->nm))){
	      /* Is this the only dimension in "coordinates" attribute? */
	      if(!strcmp(dmn_rdc[dmn_idx_rdc]->nm,att_val)){
		/* Variable will become scalar so delete "coordinates" attribute */
		aed.mode=aed_delete;
	      }else{ /* endif scalar */
		/* Excise dimension from "coordinates" attribute */
		dmn_sng_lng=strlen(dmn_rdc[dmn_idx_rdc]->nm);
		sbs_sng_lng=(size_t)(sbs_ptr-att_val);
		aed.mode=aed_overwrite;
		/* Remove whitespace immediately following excised dimension, i.e., count it as part of dimension string
		   True for all dimensions except final dimension (trailed by a NUL, not a space) */
		if(sbs_ptr[dmn_sng_lng] == ' ') dmn_sng_lng++;
		aed.sz=att_lng-dmn_sng_lng;
		/* Add one for NUL-terminator */
		aed.val.cp=(char *)nco_realloc(aed.val.cp,(aed.sz+1L)*sizeof(char));
		strncpy(aed.val.cp,att_val,sbs_sng_lng);
		aed.val.cp[sbs_sng_lng]='\0';
		strcat(aed.val.cp,sbs_ptr+dmn_sng_lng);
	      } /* endelse scalar */
	      /* Edit attribute */
	      (void)nco_aed_prc(grp_out_id,var_out_id,aed);
	      mlt_dmn_rdc=True;
	    } /* !match attribute */
	  } /* !match variable */
	} /* dmn_idx_rdc */
      } /* dmn_idx_var */
    } /* endif attribute exists */

    if(att_val) att_val=(char *)nco_free(att_val);
    if(aed.val.cp) aed.val.cp=(char *)nco_free(aed.val.cp);

  } /* var_idx >= var_nbr */

  if(aed.att_nm) aed.att_nm=(char *)nco_free(aed.att_nm);
  if(dmn_mch) dmn_mch=(int *)nco_free(dmn_mch);

  return NC_NOERR;

} /* end nco_cnv_cf_cll_mth_add() */
Пример #4
0
Файл: ncecat.c Проект: jsta/nco
int 
main(int argc,char **argv)
{
  nco_bool CNV_CCM_CCSM_CF;
  nco_bool CPY_GLB_METADATA=True; /* Option M */
  nco_bool EXCLUDE_INPUT_LIST=False; /* Option c */
  nco_bool EXTRACT_ALL_COORDINATES=False; /* Option c */
  nco_bool EXTRACT_ASSOCIATED_COORDINATES=True; /* Option C */
  nco_bool FL_RTR_RMT_LCN;
  nco_bool FL_LST_IN_APPEND=True; /* Option H */
  nco_bool FL_LST_IN_FROM_STDIN=False; /* [flg] fl_lst_in comes from stdin */
  nco_bool FORCE_APPEND=False; /* Option A */
  nco_bool FORCE_OVERWRITE=False; /* Option O */
  nco_bool FORTRAN_IDX_CNV=False; /* Option F */
  nco_bool GROUP_AGGREGATE=False; /* Option G */
  nco_bool GRP_VAR_UNN=False; /* [flg] Select union of specified groups and variables */
  nco_bool HISTORY_APPEND=True; /* Option h */
  nco_bool HAVE_LIMITS=False; /* [flg] Are there user limits? (-d) */
  nco_bool MSA_USR_RDR=False; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
  nco_bool RAM_CREATE=False; /* [flg] Create file in RAM */
  nco_bool RAM_OPEN=False; /* [flg] Open (netCDF3-only) file(s) in RAM */
  nco_bool RM_RMT_FL_PST_PRC=True; /* Option R */
  nco_bool USE_MM3_WORKAROUND=False; /* [flg] Faster copy on Multi-record Multi-variable netCDF3 files */
  nco_bool WRT_TMP_FL=True; /* [flg] Write output to temporary file */
  nco_bool RECORD_AGGREGATE=True; /* Option G */
  nco_bool flg_cln=True; /* [flg] Clean memory prior to exit */

  char **fl_lst_abb=NULL; /* Option a */
  char **fl_lst_in;
  char **gaa_arg=NULL; /* [sng] Global attribute arguments */
  char **grp_lst_in=NULL;
  char **var_lst_in=NULL_CEWI;
  char *aux_arg[NC_MAX_DIMS];
  char *cmd_ln;
  char *cnk_arg[NC_MAX_DIMS];
  char *cnk_map_sng=NULL_CEWI; /* [sng] Chunking map */
  char *cnk_plc_sng=NULL_CEWI; /* [sng] Chunking policy */
  char *fl_in=NULL;
  char *fl_out=NULL; /* Option o */
  char *fl_out_tmp;
  char *fl_pth=NULL; /* Option p */
  char *fl_pth_lcl=NULL; /* Option l */
  char *gpe_arg=NULL; /* [sng] GPE argument */
  char *grp_out=NULL; /* [sng] Group name */
  char *lmt_arg[NC_MAX_DIMS];
  char *opt_crr=NULL; /* [sng] String representation of current long-option name */
  char *optarg_lcl=NULL; /* [sng] Local copy of system optarg */
  char *ppc_arg[NC_MAX_VARS]; /* [sng] PPC arguments */
  char *rec_dmn_nm=NULL; /* [sng] New record dimension name */
  char *sng_cnv_rcd=NULL_CEWI; /* [sng] strtol()/strtoul() return code */

  /* NCO_GRP_OUT_SFX_LNG is number of consecutive numeric digits automatically generated as group name suffixes */
#define	NCO_GRP_OUT_SFX_LNG 2
  char grp_out_sfx[NCO_GRP_OUT_SFX_LNG+1L];
  char trv_pth[]="/"; /* [sng] Root path of traversal tree */

  const char * const CVS_Id="$Id$"; 
  const char * const CVS_Revision="$Revision$";
  const char * const opt_sht_lst="3467ACcD:d:Fg:G:HhL:l:Mn:Oo:p:rRt:u:v:X:x-:";

  cnk_sct cnk; /* [sct] Chunking structure */

#if defined(__cplusplus) || defined(PGI_CC)
  ddra_info_sct ddra_info;
  ddra_info.flg_ddra=False;
#else /* !__cplusplus */
  ddra_info_sct ddra_info={.flg_ddra=False};
#endif /* !__cplusplus */

  extern char *optarg;
  extern int optind;

  /* Using naked stdin/stdout/stderr in parallel region generates warning
  Copy appropriate filehandle to variable scoped shared in parallel clause */
  FILE * const fp_stderr=stderr; /* [fl] stderr filehandle CEWI */
  FILE *fp_bnr=NULL; /* [fl] Unformatted binary output file handle */

  gpe_sct *gpe=NULL; /* [sng] Group Path Editing (GPE) structure */

  int *in_id_arr=NULL;

  int abb_arg_nbr=0;
  int aux_nbr=0; /* [nbr] Number of auxiliary coordinate hyperslabs specified */
  int cnk_map=nco_cnk_map_nil; /* [enm] Chunking map */
  int cnk_nbr=0; /* [nbr] Number of chunk sizes */
  int cnk_plc=nco_cnk_plc_nil; /* [enm] Chunking policy */
  int dfl_lvl=NCO_DFL_LVL_UNDEFINED; /* [enm] Deflate level */
  int fl_idx;
  int fl_nbr=0;
  int fl_in_fmt; /* [enm] Input file format */
  int fl_out_fmt=NCO_FORMAT_UNDEFINED; /* [enm] Output file format */
  int fll_md_old; /* [enm] Old fill mode */
  int gaa_nbr=0; /* [nbr] Number of global attributes to add */
  int gpe_id; /* [id] Group ID of GPE path (diagnostic only) */
  int grp_lst_in_nbr=0; /* [nbr] Number of groups explicitly specified by user */
  int idx;
  int in_id;  
  int lmt_nbr=0; /* Option d. NB: lmt_nbr gets incremented */
  int lmt_nbr_rgn=0; /* Option d. Original limit number for GTT initialization */
  int md_open; /* [enm] Mode flag for nc_open() call */
  int nbr_dmn_fl;
  int nbr_var_fix; /* nbr_var_fix gets incremented */
  int nbr_var_fl;
  int nbr_var_prc; /* nbr_var_prc gets incremented */
  int xtr_nbr=0; /* xtr_nbr won't otherwise be set for -c with no -v */
  int opt;
  int out_id;  
  int ppc_nbr=0; /* [nbr] Number of PPC arguments */
  int rcd=NC_NOERR; /* [rcd] Return code */
  int thr_idx; /* [idx] Index of current thread */
  int thr_nbr=int_CEWI; /* [nbr] Thread number Option t */
  int var_idx;
  int var_lst_in_nbr=0;

  long idx_rec_out=0L; /* idx_rec_out gets incremented */

  md5_sct *md5=NULL; /* [sct] MD5 configuration */

  size_t bfr_sz_hnt=NC_SIZEHINT_DEFAULT; /* [B] Buffer size hint */
  size_t cnk_min_byt=NCO_CNK_SZ_MIN_BYT_DFL; /* [B] Minimize size of variable to chunk */
  size_t cnk_sz_byt=0UL; /* [B] Chunk size in bytes */
  size_t cnk_sz_scl=0UL; /* [nbr] Chunk size scalar */
  size_t grp_out_lng; /* [nbr] Length of original, canonicalized GPE specification filename component */
  size_t hdr_pad=0UL; /* [B] Pad at end of header section */

  var_sct **var=NULL;
  var_sct **var_fix;
  var_sct **var_fix_out;
  var_sct **var_out=NULL;
  var_sct **var_prc;
  var_sct **var_prc_out;

  trv_tbl_sct *trv_tbl=NULL; /* [lst] Traversal table */

  nco_dmn_dne_t *flg_dne=NULL; /* [lst] Flag to check if input dimension -d "does not exist" */

#ifdef ENABLE_MPI
  /* Declare all MPI-specific variables here */
  MPI_Comm mpi_cmm=MPI_COMM_WORLD; /* [prc] Communicator */
  int prc_rnk; /* [idx] Process rank */
  int prc_nbr=0; /* [nbr] Number of MPI processes */
#endif /* !ENABLE_MPI */
  
  static struct option opt_lng[]={ /* Structure ordered by short option key if possible */
    /* Long options with no argument, no short option counterpart */
    {"cln",no_argument,0,0}, /* [flg] Clean memory prior to exit */
    {"clean",no_argument,0,0}, /* [flg] Clean memory prior to exit */
    {"mmr_cln",no_argument,0,0}, /* [flg] Clean memory prior to exit */
    {"drt",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
    {"dirty",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
    {"mmr_drt",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
    {"gag",no_argument,0,0}, /* [flg] Group aggregation */
    {"aggregate_group",no_argument,0,0}, /* [flg] Group aggregation */
    {"hdf4",no_argument,0,0}, /* [flg] Treat file as HDF4 */
    {"md5_dgs",no_argument,0,0}, /* [flg] Perform MD5 digests */
    {"md5_digest",no_argument,0,0}, /* [flg] Perform MD5 digests */
    {"mrd",no_argument,0,0}, /* [enm] Multiple Record Dimension convention */
    {"multiple_record_dimension",no_argument,0,0}, /* [enm] Multiple Record Dimension convention */
    {"msa_usr_rdr",no_argument,0,0}, /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
    {"msa_user_order",no_argument,0,0}, /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
    {"ram_all",no_argument,0,0}, /* [flg] Open (netCDF3) and create file(s) in RAM */
    {"create_ram",no_argument,0,0}, /* [flg] Create file in RAM */
    {"open_ram",no_argument,0,0}, /* [flg] Open (netCDF3) file(s) in RAM */
    {"diskless_all",no_argument,0,0}, /* [flg] Open (netCDF3) and create file(s) in RAM */
    {"wrt_tmp_fl",no_argument,0,0}, /* [flg] Write output to temporary file */
    {"write_tmp_fl",no_argument,0,0}, /* [flg] Write output to temporary file */
    {"no_tmp_fl",no_argument,0,0}, /* [flg] Do not write output to temporary file */
    {"intersection",no_argument,0,0}, /* [flg] Select intersection of specified groups and variables */
    {"nsx",no_argument,0,0}, /* [flg] Select intersection of specified groups and variables */
    {"union",no_argument,0,0}, /* [flg] Select union of specified groups and variables */
    {"unn",no_argument,0,0}, /* [flg] Select union of specified groups and variables */
    {"version",no_argument,0,0},
    {"vrs",no_argument,0,0},
    /* Long options with argument, no short option counterpart */
    {"bfr_sz_hnt",required_argument,0,0}, /* [B] Buffer size hint */
    {"buffer_size_hint",required_argument,0,0}, /* [B] Buffer size hint */
    {"cnk_byt",required_argument,0,0}, /* [B] Chunk size in bytes */
    {"chunk_byte",required_argument,0,0}, /* [B] Chunk size in bytes */
    {"cnk_dmn",required_argument,0,0}, /* [nbr] Chunk size */
    {"chunk_dimension",required_argument,0,0}, /* [nbr] Chunk size */
    {"cnk_map",required_argument,0,0}, /* [nbr] Chunking map */
    {"chunk_map",required_argument,0,0}, /* [nbr] Chunking map */
    {"cnk_min",required_argument,0,0}, /* [B] Minimize size of variable to chunk */
    {"chunk_min",required_argument,0,0}, /* [B] Minimize size of variable to chunk */
    {"cnk_plc",required_argument,0,0}, /* [nbr] Chunking policy */
    {"chunk_policy",required_argument,0,0}, /* [nbr] Chunking policy */
    {"cnk_scl",required_argument,0,0}, /* [nbr] Chunk size scalar */
    {"chunk_scalar",required_argument,0,0}, /* [nbr] Chunk size scalar */
    {"fl_fmt",required_argument,0,0},
    {"file_format",required_argument,0,0},
    {"gaa",required_argument,0,0}, /* [sng] Global attribute add */
    {"glb_att_add",required_argument,0,0}, /* [sng] Global attribute add */
    {"hdr_pad",required_argument,0,0},
    {"header_pad",required_argument,0,0},
    {"ppc",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
    {"precision_preserving_compression",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
    {"quantize",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
    /* Long options with short counterparts */
    {"3",no_argument,0,'3'},
    {"4",no_argument,0,'4'},
    {"64bit",no_argument,0,'4'},
    {"netcdf4",no_argument,0,'4'},
    {"append",no_argument,0,'A'},
    {"coords",no_argument,0,'c'},
    {"crd",no_argument,0,'c'},
    {"no-coords",no_argument,0,'C'},
    {"no-crd",no_argument,0,'C'},
    {"debug",required_argument,0,'D'},
    {"nco_dbg_lvl",required_argument,0,'D'},
    {"dimension",required_argument,0,'d'},
    {"dmn",required_argument,0,'d'},
    {"fortran",no_argument,0,'F'},
    {"ftn",no_argument,0,'F'},
    {"gpe",required_argument,0,'G'}, /* [sng] Group Path Edit (GPE) */
    {"group",required_argument,0,'g'},
    {"grp",required_argument,0,'g'},
    {"fl_lst_in",no_argument,0,'H'},
    {"file_list",no_argument,0,'H'},
    {"history",no_argument,0,'h'},
    {"hst",no_argument,0,'h'},
    {"dfl_lvl",required_argument,0,'L'}, /* [enm] Deflate level */
    {"deflate",required_argument,0,'L'}, /* [enm] Deflate level */
    {"local",required_argument,0,'l'},
    {"lcl",required_argument,0,'l'},
    {"no_glb_mtd",no_argument,0,'M'},
    {"suppress_global_metadata",no_argument,0,'M'},
    {"nintap",required_argument,0,'n'},
    {"overwrite",no_argument,0,'O'},
    {"ovr",no_argument,0,'O'},
    {"output",required_argument,0,'o'},
    {"fl_out",required_argument,0,'o'},
    {"path",required_argument,0,'p'},
    {"retain",no_argument,0,'R'},
    {"rtn",no_argument,0,'R'},
    {"revision",no_argument,0,'r'},
    {"thr_nbr",required_argument,0,'t'},
    {"threads",required_argument,0,'t'},
    {"omp_num_threads",required_argument,0,'t'},
    {"ulm_nm",required_argument,0,'u'},
    {"rcd_nm",required_argument,0,'u'},
    {"variable",required_argument,0,'v'},
    {"auxiliary",required_argument,0,'X'},
    {"exclude",no_argument,0,'x'},
    {"xcl",no_argument,0,'x'},
    {"help",no_argument,0,'?'},
    {"hlp",no_argument,0,'?'},
    {0,0,0,0}
  }; /* end opt_lng */
  int opt_idx=0; /* Index of current long option into opt_lng array */

  /* Start timer and save command line */ 
  ddra_info.tmr_flg=nco_tmr_srt;
  rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
  ddra_info.tmr_flg=nco_tmr_mtd;
  cmd_ln=nco_cmd_ln_sng(argc,argv);

  /* Get program name and set program enum (e.g., nco_prg_id=ncra) */
  nco_prg_nm=nco_prg_prs(argv[0],&nco_prg_id);

#ifdef ENABLE_MPI
  /* MPI Initialization */
  if(False) (void)fprintf(stdout,gettext("%s: WARNING Compiled with MPI\n"),nco_prg_nm);
  MPI_Init(&argc,&argv);
  MPI_Comm_size(mpi_cmm,&prc_nbr);
  MPI_Comm_rank(mpi_cmm,&prc_rnk);
#endif /* !ENABLE_MPI */
  
  /* Parse command line arguments */
  while(1){
    /* getopt_long_only() allows one dash to prefix long options */
    opt=getopt_long(argc,argv,opt_sht_lst,opt_lng,&opt_idx);
    /* NB: access to opt_crr is only valid when long_opt is detected */
    if(opt == EOF) break; /* Parse positional arguments once getopt_long() returns EOF */
    opt_crr=(char *)strdup(opt_lng[opt_idx].name);

    /* Process long options without short option counterparts */
    if(opt == 0){
      if(!strcmp(opt_crr,"bfr_sz_hnt") || !strcmp(opt_crr,"buffer_size_hint")){
        bfr_sz_hnt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_byt") || !strcmp(opt_crr,"chunk_byte")){
        cnk_sz_byt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk_byt */
      if(!strcmp(opt_crr,"cnk_min") || !strcmp(opt_crr,"chunk_min")){
        cnk_min_byt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk_min */
      if(!strcmp(opt_crr,"cnk_dmn") || !strcmp(opt_crr,"chunk_dimension")){
        /* Copy limit argument for later processing */
        cnk_arg[cnk_nbr]=(char *)strdup(optarg);
        cnk_nbr++;
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_scl") || !strcmp(opt_crr,"chunk_scalar")){
        cnk_sz_scl=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_map") || !strcmp(opt_crr,"chunk_map")){
        /* Chunking map */
        cnk_map_sng=(char *)strdup(optarg);
        cnk_map=nco_cnk_map_get(cnk_map_sng);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_plc") || !strcmp(opt_crr,"chunk_policy")){
        /* Chunking policy */
        cnk_plc_sng=(char *)strdup(optarg);
        cnk_plc=nco_cnk_plc_get(cnk_plc_sng);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cln") || !strcmp(opt_crr,"mmr_cln") || !strcmp(opt_crr,"clean")) flg_cln=True; /* [flg] Clean memory prior to exit */
      if(!strcmp(opt_crr,"drt") || !strcmp(opt_crr,"mmr_drt") || !strcmp(opt_crr,"dirty")) flg_cln=False; /* [flg] Clean memory prior to exit */
      if(!strcmp(opt_crr,"fl_fmt") || !strcmp(opt_crr,"file_format")) rcd=nco_create_mode_prs(optarg,&fl_out_fmt);
      if(!strcmp(opt_crr,"gaa") || !strcmp(opt_crr,"glb_att_add")){
        gaa_arg=(char **)nco_realloc(gaa_arg,(gaa_nbr+1)*sizeof(char *));
        gaa_arg[gaa_nbr++]=(char *)strdup(optarg);
      } /* endif gaa */
      if(!strcmp(opt_crr,"gag") || !strcmp(opt_crr,"aggregate_group")) GROUP_AGGREGATE=True; /* [flg] Aggregate files into groups not records */
      if(!strcmp(opt_crr,"hdf4")) nco_fmt_xtn=nco_fmt_xtn_hdf4; /* [enm] Treat file as HDF4 */
      if(!strcmp(opt_crr,"hdr_pad") || !strcmp(opt_crr,"header_pad")){
        hdr_pad=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif "hdr_pad" */
      if(!strcmp(opt_crr,"md5_dgs") || !strcmp(opt_crr,"md5_digest")){
        if(!md5) md5=nco_md5_ini();
	md5->dgs=True;
        if(nco_dbg_lvl >= nco_dbg_std) (void)fprintf(stderr,"%s: INFO Will perform MD5 digests of input and output hyperslabs\n",nco_prg_nm_get());
      } /* endif "md5_dgs" */
      if(!strcmp(opt_crr,"mrd") || !strcmp(opt_crr,"multiple_record_dimension")) nco_mrd_cnv=nco_mrd_allow; /* [enm] Multiple Record Dimension convention */
      if(!strcmp(opt_crr,"msa_usr_rdr") || !strcmp(opt_crr,"msa_user_order")) MSA_USR_RDR=True; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
      if(!strcmp(opt_crr,"ppc") || !strcmp(opt_crr,"precision_preserving_compression") || !strcmp(opt_crr,"quantize")){
        ppc_arg[ppc_nbr]=(char *)strdup(optarg);
        ppc_nbr++;
      } /* endif "ppc" */
      if(!strcmp(opt_crr,"ram_all") || !strcmp(opt_crr,"create_ram") || !strcmp(opt_crr,"diskless_all")) RAM_CREATE=True; /* [flg] Open (netCDF3) file(s) in RAM */
      if(!strcmp(opt_crr,"ram_all") || !strcmp(opt_crr,"open_ram") || !strcmp(opt_crr,"diskless_all")) RAM_OPEN=True; /* [flg] Create file in RAM */
      if(!strcmp(opt_crr,"unn") || !strcmp(opt_crr,"union")) GRP_VAR_UNN=True;
      if(!strcmp(opt_crr,"nsx") || !strcmp(opt_crr,"intersection")) GRP_VAR_UNN=False;
      if(!strcmp(opt_crr,"vrs") || !strcmp(opt_crr,"version")){
        (void)nco_vrs_prn(CVS_Id,CVS_Revision);
        nco_exit(EXIT_SUCCESS);
      } /* endif "vrs" */
      if(!strcmp(opt_crr,"wrt_tmp_fl") || !strcmp(opt_crr,"write_tmp_fl")) WRT_TMP_FL=True;
      if(!strcmp(opt_crr,"no_tmp_fl")) WRT_TMP_FL=False;
    } /* opt != 0 */
    /* Process short options */
    switch(opt){
    case 0: /* Long options have already been processed, return */
      break;
    case '3': /* Request netCDF3 output storage format */
      fl_out_fmt=NC_FORMAT_CLASSIC;
      break;
    case '4': /* Catch-all to prescribe output storage format */
      if(!strcmp(opt_crr,"64bit")) fl_out_fmt=NC_FORMAT_64BIT; else fl_out_fmt=NC_FORMAT_NETCDF4; 
      break;
    case '6': /* Request netCDF3 64-bit offset output storage format */
      fl_out_fmt=NC_FORMAT_64BIT;
      break;
    case '7': /* Request netCDF4-classic output storage format */
      fl_out_fmt=NC_FORMAT_NETCDF4_CLASSIC;
      break;
    case 'A': /* Toggle FORCE_APPEND */
      FORCE_APPEND=!FORCE_APPEND;
      break;
    case 'C': /* Extract all coordinates associated with extracted variables? */
      EXTRACT_ASSOCIATED_COORDINATES=False;
      break;
    case 'c':
      EXTRACT_ALL_COORDINATES=True;
      break;
    case 'D': /* Debugging level. Default is 0. */
      nco_dbg_lvl=(unsigned short int)strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      nc_set_log_level(nco_dbg_lvl);
      break;
    case 'd': /* Copy limit argument for later processing */
      lmt_arg[lmt_nbr]=(char *)strdup(optarg);
      lmt_nbr++;
      lmt_nbr_rgn=lmt_nbr;
      HAVE_LIMITS=True;
      break;
    case 'F': /* Toggle index convention. Default is 0-based arrays (C-style). */
      FORTRAN_IDX_CNV=!FORTRAN_IDX_CNV;
      break;
    case 'G': /* Apply Group Path Editing (GPE) to output group */
      /* NB: GNU getopt() optional argument syntax is ugly (requires "=" sign) so avoid it
      http://stackoverflow.com/questions/1052746/getopt-does-not-parse-optional-arguments-to-parameters */
      gpe=nco_gpe_prs_arg(optarg);
      grp_out=(char *)strdup(gpe->nm_cnn); /* [sng] Group name */
      grp_out_lng=gpe->lng_cnn;
      GROUP_AGGREGATE=True;
      break;
    case 'g': /* Copy group argument for later processing */
      /* Replace commas with hashes when within braces (convert back later) */
      optarg_lcl=(char *)strdup(optarg);
      (void)nco_rx_comma2hash(optarg_lcl);
      grp_lst_in=nco_lst_prs_2D(optarg_lcl,",",&grp_lst_in_nbr);
      optarg_lcl=(char *)nco_free(optarg_lcl);
      break;
    case 'H': /* Toggle writing input file list attribute */
      FL_LST_IN_APPEND=!FL_LST_IN_APPEND;
      break;
    case 'h': /* Toggle appending to history global attribute */
      HISTORY_APPEND=!HISTORY_APPEND;
      break;
    case 'L': /* [enm] Deflate level. Default is 0. */
      dfl_lvl=(int)strtol(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtol",sng_cnv_rcd);
      break;
    case 'l': /* Local path prefix for files retrieved from remote file system */
      fl_pth_lcl=(char *)strdup(optarg);
      break;
    case 'M': /* Toggle copying global metadata */
      CPY_GLB_METADATA=!CPY_GLB_METADATA;
      break;
    case 'n': /* NINTAP-style abbreviation of files to process */
      fl_lst_abb=nco_lst_prs_2D(optarg,",",&abb_arg_nbr);
      if(abb_arg_nbr < 1 || abb_arg_nbr > 6){
        (void)fprintf(stdout,"%s: ERROR Incorrect abbreviation for file list\n",nco_prg_nm);
        (void)nco_usg_prn();
        nco_exit(EXIT_FAILURE);
      } /* end if */
      break;
    case 'O': /* Toggle FORCE_OVERWRITE */
      FORCE_OVERWRITE=!FORCE_OVERWRITE;
      break;
    case 'o': /* Name of output file */
      fl_out=(char *)strdup(optarg);
      break;
    case 'p': /* Common file path */
      fl_pth=(char *)strdup(optarg);
      break;
    case 'R': /* Toggle removal of remotely-retrieved-files. Default is True. */
      RM_RMT_FL_PST_PRC=!RM_RMT_FL_PST_PRC;
      break;
    case 'r': /* Print CVS program information and copyright notice */
      (void)nco_vrs_prn(CVS_Id,CVS_Revision);
      (void)nco_lbr_vrs_prn();
      (void)nco_cpy_prn();
      (void)nco_cnf_prn();
      nco_exit(EXIT_SUCCESS);
      break;
    case 't': /* Thread number */
      thr_nbr=(int)strtol(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtol",sng_cnv_rcd);
      break;
    case 'u': /* New record dimension name */
      rec_dmn_nm=(char *)strdup(optarg);
      break;
    case 'v': /* Variables to extract/exclude */
      /* Replace commas with hashes when within braces (convert back later) */
      optarg_lcl=(char *)strdup(optarg);
      (void)nco_rx_comma2hash(optarg_lcl);
      var_lst_in=nco_lst_prs_2D(optarg_lcl,",",&var_lst_in_nbr);
      optarg_lcl=(char *)nco_free(optarg_lcl);
      xtr_nbr=var_lst_in_nbr;
      break;
    case 'X': /* Copy auxiliary coordinate argument for later processing */
      aux_arg[aux_nbr]=(char *)strdup(optarg);
      aux_nbr++;
      MSA_USR_RDR=True; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */      
      break;
    case 'x': /* Exclude rather than extract variables specified with -v */
      EXCLUDE_INPUT_LIST=True;
      break;
    case '?': /* Print proper usage */
      (void)nco_usg_prn();
      nco_exit(EXIT_SUCCESS);
      break;
    case '-': /* Long options are not allowed */
      (void)fprintf(stderr,"%s: ERROR Long options are not available in this build. Use single letter options instead.\n",nco_prg_nm_get());
      nco_exit(EXIT_FAILURE);
      break;
    default: /* Print proper usage */
      (void)fprintf(stdout,"%s ERROR in command-line syntax/options. Please reformulate command accordingly.\n",nco_prg_nm_get());
      (void)nco_usg_prn();
      nco_exit(EXIT_FAILURE);
      break;
    } /* end switch */
    if(opt_crr) opt_crr=(char *)nco_free(opt_crr);
  } /* end while loop */

  trv_tbl_init(&trv_tbl);

  if(GROUP_AGGREGATE){
    RECORD_AGGREGATE=!GROUP_AGGREGATE;
    fl_out_fmt=NC_FORMAT_NETCDF4; 
  } /* !GROUP_AGGREGATE */

  /* Process positional arguments and fill in filenames */
  fl_lst_in=nco_fl_lst_mk(argv,argc,optind,&fl_nbr,&fl_out,&FL_LST_IN_FROM_STDIN);

  /* Parse filename */
  fl_in=nco_fl_nm_prs(fl_in,0,&fl_nbr,fl_lst_in,abb_arg_nbr,fl_lst_abb,fl_pth);
  /* Make sure file is on local system and is readable or die trying */
  fl_in=nco_fl_mk_lcl(fl_in,fl_pth_lcl,&FL_RTR_RMT_LCN);

  if(RAM_OPEN) md_open=NC_NOWRITE|NC_DISKLESS; else md_open=NC_NOWRITE;

  /* Open file using appropriate buffer size hints and verbosity */
  rcd+=nco_fl_open(fl_in,md_open,&bfr_sz_hnt,&in_id);

  (void)nco_inq_format(in_id,&fl_in_fmt); 

  if(RECORD_AGGREGATE){

    /* Initialize thread information */
    thr_nbr=nco_openmp_ini(thr_nbr);
    in_id_arr=(int *)nco_malloc(thr_nbr*sizeof(int));

    /* Construct GTT, Group Traversal Table (groups,variables,dimensions, limits) */
    (void)nco_bld_trv_tbl(in_id,trv_pth,lmt_nbr,lmt_arg,aux_nbr,aux_arg,MSA_USR_RDR,FORTRAN_IDX_CNV,grp_lst_in,grp_lst_in_nbr,var_lst_in,xtr_nbr,EXTRACT_ALL_COORDINATES,GRP_VAR_UNN,False,EXCLUDE_INPUT_LIST,EXTRACT_ASSOCIATED_COORDINATES,nco_pck_plc_nil,&flg_dne,trv_tbl);

    /* Were all user-specified dimensions found? */ 
    (void)nco_chk_dmn(lmt_nbr,flg_dne);     

    /* Get number of variables, dimensions, and global attributes in file, file format */
    (void)trv_tbl_inq((int *)NULL,(int *)NULL,(int *)NULL,&nbr_dmn_fl,(int *)NULL,(int *)NULL,(int *)NULL,(int *)NULL,&nbr_var_fl,trv_tbl);

    /* Fill-in variable structure list for all extracted variables */
    var=nco_fll_var_trv(in_id,&xtr_nbr,trv_tbl);

    var_out=(var_sct **)nco_malloc(xtr_nbr*sizeof(var_sct *));
    for(var_idx=0;var_idx<xtr_nbr;var_idx++) var_out[var_idx]=nco_var_dpl(var[var_idx]);

    /* Is this a CCM/CCSM/CF-format history tape? */
    CNV_CCM_CCSM_CF=nco_cnv_ccm_ccsm_cf_inq(in_id);

    /* Divide variable lists into lists of fixed variables and variables to be processed */
    (void)nco_var_lst_dvd(var,var_out,xtr_nbr,CNV_CCM_CCSM_CF,True,nco_pck_plc_nil,nco_pck_map_nil,(dmn_sct **)NULL,0,&var_fix,&var_fix_out,&nbr_var_fix,&var_prc,&var_prc_out,&nbr_var_prc,trv_tbl);

    /* Store processed and fixed variables info into GTT */
    (void)nco_var_prc_fix_trv(nbr_var_prc,var_prc,nbr_var_fix,var_fix,trv_tbl);
  
  } /* !RECORD_AGGREGATE */

  /* Make output and input files consanguinous */
  if(fl_out_fmt == NCO_FORMAT_UNDEFINED) fl_out_fmt=fl_in_fmt;

  /* Initialize, decode, and set PPC information */
  if(ppc_nbr > 0) nco_ppc_ini(in_id,&dfl_lvl,fl_out_fmt,ppc_arg,ppc_nbr,trv_tbl);

  /* Verify output file format supports requested actions */
  (void)nco_fl_fmt_vet(fl_out_fmt,cnk_nbr,dfl_lvl);

  /* Open output file */
  fl_out_tmp=nco_fl_out_open(fl_out,FORCE_APPEND,FORCE_OVERWRITE,fl_out_fmt,&bfr_sz_hnt,RAM_CREATE,RAM_OPEN,WRT_TMP_FL,&out_id);

  /* Initialize chunking from user-specified inputs */
  if(fl_out_fmt == NC_FORMAT_NETCDF4 || fl_out_fmt == NC_FORMAT_NETCDF4_CLASSIC) rcd+=nco_cnk_ini(in_id,fl_out,cnk_arg,cnk_nbr,cnk_map,cnk_plc,cnk_min_byt,cnk_sz_byt,cnk_sz_scl,&cnk);

  /* ncecat-specific operations */
  if(RECORD_AGGREGATE){

    if(!rec_dmn_nm) rec_dmn_nm=(char *)strdup("record"); 

    /* Prepend record dimension to beginning of all vectors for processed variables */
    for(idx=0;idx<nbr_var_prc;idx++){
      var_prc_out[idx]->nbr_dim++;
      var_prc_out[idx]->is_rec_var=True;
      var_prc_out[idx]->sz_rec=var_prc_out[idx]->sz;

      /* Allocate space to hold dimension IDs */
      var_prc_out[idx]->dim=(dmn_sct **)nco_realloc(var_prc_out[idx]->dim,var_prc_out[idx]->nbr_dim*sizeof(dmn_sct *));
      var_prc_out[idx]->dmn_id=(int *)nco_realloc(var_prc_out[idx]->dmn_id,var_prc_out[idx]->nbr_dim*sizeof(int));
      var_prc_out[idx]->cnt=(long *)nco_realloc(var_prc_out[idx]->cnt,var_prc_out[idx]->nbr_dim*sizeof(long int));
      var_prc_out[idx]->end=(long *)nco_realloc(var_prc_out[idx]->end,var_prc_out[idx]->nbr_dim*sizeof(long int));
      var_prc_out[idx]->srd=(long *)nco_realloc(var_prc_out[idx]->srd,var_prc_out[idx]->nbr_dim*sizeof(long int));
      var_prc_out[idx]->srt=(long *)nco_realloc(var_prc_out[idx]->srt,var_prc_out[idx]->nbr_dim*sizeof(long int));

      /* Moves current array by one to make room for new record dimension info */
      (void)memmove((void *)(var_prc_out[idx]->dim+1),(void *)(var_prc_out[idx]->dim),(var_prc_out[idx]->nbr_dim-1)*sizeof(dmn_sct *));
      (void)memmove((void *)(var_prc_out[idx]->dmn_id+1),(void *)(var_prc_out[idx]->dmn_id),(var_prc_out[idx]->nbr_dim-1)*sizeof(int));
      (void)memmove((void *)(var_prc_out[idx]->cnt+1L),(void *)(var_prc_out[idx]->cnt),(var_prc_out[idx]->nbr_dim-1)*sizeof(long int));
      (void)memmove((void *)(var_prc_out[idx]->end+1L),(void *)(var_prc_out[idx]->end),(var_prc_out[idx]->nbr_dim-1)*sizeof(long int));
      (void)memmove((void *)(var_prc_out[idx]->srd+1L),(void *)(var_prc_out[idx]->srd),(var_prc_out[idx]->nbr_dim-1)*sizeof(long int));
      (void)memmove((void *)(var_prc_out[idx]->srt+1L),(void *)(var_prc_out[idx]->srt),(var_prc_out[idx]->nbr_dim-1)*sizeof(long int));

      /* Insert value for new record dimension */
      var_prc_out[idx]->cnt[0]=1L;
      var_prc_out[idx]->end[0]=-1L;
      var_prc_out[idx]->srd[0]=-1L;
      var_prc_out[idx]->srt[0]=-1L;
    } /* end loop over idx */

    /* Define dimensions, extracted groups, variables, and attributes in output file */
    (void)nco_xtr_dfn(in_id,out_id,&cnk,dfl_lvl,gpe,md5,!FORCE_APPEND,True,False,nco_pck_plc_nil,rec_dmn_nm,trv_tbl);

    /* Catenate time-stamped command line to "history" global attribute */
    if(HISTORY_APPEND) (void)nco_hst_att_cat(out_id,cmd_ln);
    if(HISTORY_APPEND && FORCE_APPEND) (void)nco_prv_att_cat(fl_in,in_id,out_id);
    if(gaa_nbr > 0) (void)nco_glb_att_add(out_id,gaa_arg,gaa_nbr);
    if(HISTORY_APPEND) (void)nco_vrs_att_cat(out_id);
    /* Add input file list global attribute */
    if(FL_LST_IN_APPEND && HISTORY_APPEND && FL_LST_IN_FROM_STDIN) (void)nco_fl_lst_att_cat(out_id,fl_lst_in,fl_nbr);
    if(thr_nbr > 0 && HISTORY_APPEND) (void)nco_thr_att_cat(out_id,thr_nbr);

    /* Turn-off default filling behavior to enhance efficiency */
    nco_set_fill(out_id,NC_NOFILL,&fll_md_old);

    /* Take output file out of define mode */
    if(hdr_pad == 0UL){
      (void)nco_enddef(out_id);
    }else{
      (void)nco__enddef(out_id,hdr_pad);
      if(nco_dbg_lvl >= nco_dbg_scl) (void)fprintf(stderr,"%s: INFO Padding header with %lu extra bytes\n",nco_prg_nm_get(),(unsigned long)hdr_pad);
    } /* hdr_pad */

    /* Assign zero to start and unity to stride vectors in output variables */
    (void)nco_var_srd_srt_set(var_out,xtr_nbr);

    /* Copy variable data for non-processed variables */
    (void)nco_cpy_fix_var_trv(in_id,out_id,gpe,trv_tbl);  

    /* Close first input netCDF file */
    (void)nco_close(in_id);

    /* Timestamp end of metadata setup and disk layout */
    rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
    ddra_info.tmr_flg=nco_tmr_rgl;
  } /* !RECORD_AGGREGATE */

  if(GROUP_AGGREGATE){
#ifndef ENABLE_NETCDF4
    (void)fprintf(stderr,"%s: ERROR GAG requires netCDF4 capabilities. HINT: Rebuild NCO with netCDF4 enabled.\n",nco_prg_nm_get());
    nco_exit(EXIT_FAILURE);
#endif /* ENABLE_NETCDF4 */
    if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"%s: INFO Group Aggregation (GAG) feature enabled\n",nco_prg_nm_get());
    if(fl_out_fmt != NC_FORMAT_NETCDF4){
      (void)fprintf(stderr,"%s: ERROR Group Aggregation requires netCDF4 output format but user explicitly requested format = %s\n",nco_prg_nm_get(),nco_fmt_sng(fl_out_fmt));
      nco_exit(EXIT_FAILURE);
    } /* endif err */
  } /* !GROUP_AGGREGATE */

  /* Loop over input files */
  for(fl_idx=0;fl_idx<fl_nbr;fl_idx++){
    /* Parse filename */
    if(fl_idx) fl_in=nco_fl_nm_prs(fl_in,fl_idx,(int *)NULL,fl_lst_in,abb_arg_nbr,fl_lst_abb,fl_pth);
    if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"%s: INFO Input file %d is %s",nco_prg_nm_get(),fl_idx,fl_in);
    /* Make sure file is on local system and is readable or die trying */
    if(fl_idx) fl_in=nco_fl_mk_lcl(fl_in,fl_pth_lcl,&FL_RTR_RMT_LCN);
    if(nco_dbg_lvl >= nco_dbg_fl && FL_RTR_RMT_LCN) (void)fprintf(stderr,", local file is %s",fl_in);
    if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"\n");

    if(GROUP_AGGREGATE){
      size_t gpe_arg_lng; /* [nbr] Length of group specification */
      if(grp_out){
        /* Append enumerated counter to end of user-specified root group path */
        sprintf(grp_out_sfx,"%02d",fl_idx);
        gpe_arg_lng=grp_out_lng+NCO_GRP_OUT_SFX_LNG+gpe->lng_edt;
        gpe_arg=(char *)nco_malloc((gpe_arg_lng+1L)*sizeof(char));
        (void)strcpy(gpe_arg,grp_out);
        (void)strcat(gpe_arg,grp_out_sfx);
        if(gpe->edt) (void)strcat(gpe_arg,gpe->edt);
      }else{
        /* Use filename stub as group name */
        char *stb_srt_psn; /* [sng] Starting position of "stub", i.e., last component of filename */
        size_t fl_in_lng; /* [nbr] Length of filename */
        size_t sfx_fst; /* [nbr] Offset of suffix from start of string */
        size_t sfx_lng; /* [nbr] Suffix has this many characters */

        /* Is there a .nc, .cdf, .nc3, or .nc4 suffix? or an .hdf, .HDF, .h5, .H5, or .he5 suffix? */
        fl_in_lng=strlen(fl_in);
        sfx_lng=3L;
        sfx_fst=fl_in_lng-sfx_lng;
        /* Sample data found in, e.g., ftp://ftp.unidata.ucar.edu/pub/netcdf/sample_data and http://hdfeos.org/zoo
	   Two versions of HDF-EOS exist: HDF-EOS2 for HDF4, and HDF-EOS5 for HDF5 */
        if(strncmp(fl_in+sfx_fst,".nc",sfx_lng) && /* netCDF standard suffix */
	   strncmp(fl_in+sfx_fst,".H5",sfx_lng) && /* HDF5 suffix used by ICESat GLAS, e.g., GLAH05_633_2103_001_1107_3_01_0001.H5 */
	   strncmp(fl_in+sfx_fst,".h5",sfx_lng)){ /* HDF5 suffix used by BUV, ICESat GLAS, MABEL, MEaSUREs Ozone, SBUV, e.g., BUV-Nimbus04_L3zm_v01-00-2012m0203t144121.h5, GLAH13_633_2103_001_1317_0_01_0001.h5, mabel_l2_20130927t201800_008_1.h5, MSO3L3zm5_v01-02-2013m0907t142428.h5 */
	  sfx_lng=4L;
	  sfx_fst=fl_in_lng-sfx_lng;
	  if(strncmp(fl_in+sfx_fst,".cdf",sfx_lng) && /* netCDF old-fashioned suffix */
	     strncmp(fl_in+sfx_fst,".hdf",sfx_lng) && /* HDF-EOS2 (HDF4) suffix used by AIRS, AMSR-E, MODIS, MOPPITT, SeaWiFS, e.g., AIRS.2002.08.01.L3.RetStd_H031.v4.0.21.0.G06104133732.hdf, MSR_E_L2_Rain_V10_200905312326_A.hdf, MOD10CM.A2007001.005.2007108111758.hdf, MOP01-20121231-L1V3.34.10.hdf, S1999001.L3m_DAY_CDOM_cdom_index_9km.hdf */
	     strncmp(fl_in+sfx_fst,".HDF",sfx_lng) && /* HDF-EOS2 (HDF4) suffix used by TRMM, e.g., 3B43.070901.6A.HDF */
	     strncmp(fl_in+sfx_fst,".he5",sfx_lng) && /* HDF-EOS5 (HDF5) suffix used by HIRDLS, OMI Aerosols, e.g., HIRDLS-Aura_L3ZAD_v06-00-00-c02_2005d022-2008d077.he5, OMI-Aura_L2-OMAERUV_2013m1004t2338-o49057_v003-2013m1005t053932.he5 */
	     strncmp(fl_in+sfx_fst,".nc3",sfx_lng) && /* netCDF3 variant suffix */
	     strncmp(fl_in+sfx_fst,".nc4",sfx_lng)){ /* netCDF4 variant suffix */
	    (void)fprintf(stderr,"%s: WARNING GAG filename suffix is unusual---using whole filename as group name\n",nco_prg_nm_get());
	    sfx_lng=0;
	  } /* endif */
        } /* endif */

        stb_srt_psn=strrchr(fl_in,'/');
        if(!stb_srt_psn) stb_srt_psn=fl_in; else stb_srt_psn++;
        gpe_arg_lng=strlen(stb_srt_psn)-sfx_lng;
        gpe_arg=(char *)nco_malloc((gpe_arg_lng+1L)*sizeof(char));
        gpe_arg=strncpy(gpe_arg,stb_srt_psn,strlen(stb_srt_psn)-sfx_lng);
        gpe_arg[gpe_arg_lng]='\0';

        /* GPE arguments derived from filenames check for existence of path in output file */
        rcd=nco_inq_grp_full_ncid_flg(out_id,gpe_arg,&gpe_id);
        /* Existence implies current file may overwrite contents of previous file */
        if(rcd == NC_NOERR) (void)fprintf(stderr,"%s: WARNING GAG path \"%s\" automatically derived from stub of filename %s conflicts with existing path in output file. Any input data with same absolute path names as contents of a previous input file will be overwritten. Is the same input file specified multiple times? Is this intentional?\nHINT: To distribute copies of a single input file into different groups, use GPE to generate distinct output group names, e.g., %s -G copy in.nc in.nc out.nc\n",nco_prg_nm_get(),gpe_arg,fl_in,nco_prg_nm_get()); else rcd=NC_NOERR;
      } /* !grp_out */
      /* Free old structure, if any, before re-use */
      if(gpe) gpe=(gpe_sct *)nco_gpe_free(gpe);
      gpe=nco_gpe_prs_arg(gpe_arg);
      gpe_arg=(char *)nco_free(gpe_arg);
      if(nco_dbg_lvl >= nco_dbg_scl) (void)fprintf(stderr,"%s: INFO GAG current file has gpe->arg=%s\n",nco_prg_nm_get(),gpe->arg);

      /* Open file using appropriate buffer size hints and verbosity */
      if(fl_idx) rcd=nco_fl_open(fl_in,md_open,&bfr_sz_hnt,&in_id);

      if(fl_idx == 0){
        /* fxm: Copy global attributes of first file to root of output file to preserve history attribute */
        /* Copy global attributes */
        if(CPY_GLB_METADATA) (void)nco_att_cpy(in_id,out_id,NC_GLOBAL,NC_GLOBAL,(nco_bool)True);

        /* Catenate time-stamped command line to "history" global attribute */
        if(HISTORY_APPEND) (void)nco_hst_att_cat(out_id,cmd_ln);
    if(gaa_nbr > 0) (void)nco_glb_att_add(out_id,gaa_arg,gaa_nbr);
  if(HISTORY_APPEND) (void)nco_vrs_att_cat(out_id);

        /* Add input file list global attribute */
        if(FL_LST_IN_APPEND && HISTORY_APPEND && FL_LST_IN_FROM_STDIN) (void)nco_fl_lst_att_cat(out_id,fl_lst_in,fl_nbr);
      } /* endif first file */

      trv_tbl_sct *trv_tbl_gpr=NULL; /* [lst] Traversal table for GROUP_AGGREGATE only */

      /* Initialize traversal table */
      trv_tbl_init(&trv_tbl_gpr);

      /* Construct GTT, Group Traversal Table (groups,variables,dimensions, limits) */
      (void)nco_bld_trv_tbl(in_id,trv_pth,lmt_nbr_rgn,lmt_arg,aux_nbr,aux_arg,MSA_USR_RDR,FORTRAN_IDX_CNV,grp_lst_in,grp_lst_in_nbr,var_lst_in,xtr_nbr,EXTRACT_ALL_COORDINATES,GRP_VAR_UNN,False,EXCLUDE_INPUT_LIST,EXTRACT_ASSOCIATED_COORDINATES,nco_pck_plc_nil,&flg_dne,trv_tbl_gpr);

      /* Get number of variables, dimensions, and global attributes in file, file format */
      (void)trv_tbl_inq((int *)NULL,(int *)NULL,(int *)NULL,&nbr_dmn_fl,(int *)NULL,(int *)NULL,(int *)NULL,(int *)NULL,&nbr_var_fl,trv_tbl_gpr);
      (void)nco_inq_format(in_id,&fl_in_fmt);

      /* We now have final list of variables to extract. Phew. */

      /* Define extracted groups, variables, and attributes in output file */
      (void)nco_xtr_dfn(in_id,out_id,&cnk,dfl_lvl,gpe,md5,CPY_GLB_METADATA,(nco_bool)True,(nco_bool)False,nco_pck_plc_nil,rec_dmn_nm,trv_tbl_gpr);

      /* Turn-off default filling behavior to enhance efficiency */
      nco_set_fill(out_id,NC_NOFILL,&fll_md_old);

      /* Write extracted data to output file */
      (void)nco_xtr_wrt(in_id,out_id,gpe,fp_bnr,md5,HAVE_LIMITS,trv_tbl_gpr);

      /* Close input netCDF file */
      (void)nco_close(in_id);

      /* Free traversal table */
      trv_tbl_free(trv_tbl_gpr);

    } /* !GROUP_AGGREGATE */

    if(RECORD_AGGREGATE){

      /* Open file once per thread to improve caching */
      for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) rcd=nco_fl_open(fl_in,md_open,&bfr_sz_hnt,in_id_arr+thr_idx);

      /* Perform various error-checks on input file */
      if(False) (void)nco_fl_cmp_err_chk();

      /* 20120309 Special case to improve copy speed on large blocksize filesystems (MM3s) */
      USE_MM3_WORKAROUND=nco_use_mm3_workaround(in_id_arr[0],fl_out_fmt);
      if(lmt_nbr > 0) USE_MM3_WORKAROUND=False; 
      if(!USE_MM3_WORKAROUND){  
        /* Copy all data variable-by-variable */
        ;
      }else{
        /* MM3 workaround algorithm */
        /* ncecat-specific MM3 characteristics:
        Only coordinates are "fixed" (non-processed) variables
        All other variables are "processed" 
        These variables may be fixed or
        record on input yet are all record on output 
        Makes sense to always use MM3? */
        ;
      } /* endif MM3 workaround */

      /* OpenMP with threading over variables, not files */
#ifdef _OPENMP
# pragma omp parallel for default(none) private(in_id) shared(nco_dbg_lvl,fl_nbr,idx_rec_out,in_id_arr,nbr_var_prc,out_id,var_prc,var_prc_out,nbr_dmn_fl,md5,trv_tbl)
#endif /* !_OPENMP */
      /* Process all variables in current file */
      for(idx=0;idx<nbr_var_prc;idx++){
	int grp_id; /* [ID] Group ID (input) */
        int grp_out_id; /* [ID] Group ID (output) */
        int var_out_id; /* [ID] Variable ID (output) */
        trv_sct *var_trv; /* [sct] Variable GTT object */

        in_id=in_id_arr[omp_get_thread_num()];
        if(nco_dbg_lvl >= nco_dbg_var) (void)fprintf(fp_stderr,"%s, ",var_prc[idx]->nm);
        if(nco_dbg_lvl >= nco_dbg_var) (void)fflush(fp_stderr);

        /* Obtain variable GTT object using full variable name */
        var_trv=trv_tbl_var_nm_fll(var_prc[idx]->nm_fll,trv_tbl);
	/* Variables may have different ID, missing_value, type, in each file */
	(void)nco_inq_grp_full_ncid(in_id,var_trv->grp_nm_fll,&grp_id);
	(void)nco_var_mtd_refresh(grp_id,var_prc[idx]);

        /* Read */
        (void)nco_msa_var_get_trv(in_id,var_prc[idx],trv_tbl);

        /* Size of record dimension is 1 in output file */
        var_prc_out[idx]->cnt[0]=1L;
        var_prc_out[idx]->srt[0]=idx_rec_out;

        /* Write variable into current record in output file */

        /* Obtain output group ID */
        (void)nco_inq_grp_full_ncid(out_id,var_trv->grp_nm_fll,&grp_out_id);

        /* Get variable ID */
        (void)nco_inq_varid(grp_out_id,var_trv->nm,&var_out_id);

        /* Store the output variable ID */
        var_prc_out[idx]->id=var_out_id;

	if(var_trv->ppc != NC_MAX_INT){
	  if(var_trv->flg_nsd) (void)nco_ppc_bitmask(var_trv->ppc,var_prc[idx]->type,var_prc[idx]->sz,var_prc[idx]->has_mss_val,var_prc[idx]->mss_val,var_prc[idx]->val); else (void)nco_ppc_around(var_trv->ppc,var_prc[idx]->type,var_prc[idx]->sz,var_prc[idx]->has_mss_val,var_prc[idx]->mss_val,var_prc[idx]->val);
	} /* endif ppc */
	if(nco_is_xcp(var_trv->nm)) nco_xcp_prc(var_trv->nm,var_prc[idx]->type,var_prc[idx]->sz,(char *)var_prc[idx]->val.vp);
 
#ifdef _OPENMP
# pragma omp critical
#endif /* _OPENMP */
        { /* begin OpenMP critical */
          if(var_prc[idx]->nbr_dim == 0){
            (void)nco_put_var1(grp_out_id,var_prc_out[idx]->id,var_prc_out[idx]->srt,var_prc[idx]->val.vp,var_prc[idx]->type);
          }else{ /* end if variable is scalar */
            (void)nco_put_vara(grp_out_id,var_prc_out[idx]->id,var_prc_out[idx]->srt,var_prc_out[idx]->cnt,var_prc[idx]->val.vp,var_prc[idx]->type);
          } /* end if variable is array */
          /* Perform MD5 digest of input and output data if requested */
          if(md5) (void)nco_md5_chk(md5,var_prc_out[idx]->nm,var_prc_out[idx]->sz*nco_typ_lng(var_prc[idx]->type),out_id,var_prc_out[idx]->srt,var_prc_out[idx]->cnt,var_prc[idx]->val.vp);
          /* Free current input buffer */
          var_prc[idx]->val.vp=nco_free(var_prc[idx]->val.vp);
        } /* end OpenMP critical */

      } /* end (OpenMP parallel for) loop over idx */
      if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"\n");

      idx_rec_out++; /* [idx] Index of current record in output file (0 is first, ...) */

      /* Close input netCDF file */
      for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) nco_close(in_id_arr[thr_idx]);

    } /* !RECORD_AGGREGATE */

    /* Remove local copy of file */
    if(FL_RTR_RMT_LCN && RM_RMT_FL_PST_PRC) (void)nco_fl_rm(fl_in);

  } /* end loop over fl_idx */

  /* Close output file and move it from temporary to permanent location */
  (void)nco_fl_out_cls(fl_out,fl_out_tmp,out_id);

  /* Clean memory unless dirty memory allowed */
  if(flg_cln){

    /* NCO-generic clean-up */
    /* Free individual strings/arrays */
    if(cmd_ln) cmd_ln=(char *)nco_free(cmd_ln);
    if(cnk_map_sng) cnk_map_sng=(char *)nco_free(cnk_map_sng);
    if(cnk_plc_sng) cnk_plc_sng=(char *)nco_free(cnk_plc_sng);
    if(grp_out) grp_out=(char *)nco_free(grp_out);
    if(fl_in) fl_in=(char *)nco_free(fl_in);
    if(fl_out) fl_out=(char *)nco_free(fl_out);
    if(fl_out_tmp) fl_out_tmp=(char *)nco_free(fl_out_tmp);
    if(fl_pth) fl_pth=(char *)nco_free(fl_pth);
    if(fl_pth_lcl) fl_pth_lcl=(char *)nco_free(fl_pth_lcl);
    if(in_id_arr) in_id_arr=(int *)nco_free(in_id_arr);
    /* Free lists of strings */
    if(fl_lst_in && !fl_lst_abb) fl_lst_in=nco_sng_lst_free(fl_lst_in,fl_nbr); 
    if(fl_lst_in && fl_lst_abb) fl_lst_in=nco_sng_lst_free(fl_lst_in,1);
    if(fl_lst_abb) fl_lst_abb=nco_sng_lst_free(fl_lst_abb,abb_arg_nbr);
    if(gaa_nbr > 0) gaa_arg=nco_sng_lst_free(gaa_arg,gaa_nbr);
    if(var_lst_in_nbr > 0) var_lst_in=nco_sng_lst_free(var_lst_in,var_lst_in_nbr);
    /* Free limits */
    for(idx=0;idx<aux_nbr;idx++) aux_arg[idx]=(char *)nco_free(aux_arg[idx]);
    for(idx=0;idx<lmt_nbr;idx++) lmt_arg[idx]=(char *)nco_free(lmt_arg[idx]);
    for(idx=0;idx<ppc_nbr;idx++) ppc_arg[idx]=(char *)nco_free(ppc_arg[idx]);
    /* Free chunking information */
    for(idx=0;idx<cnk_nbr;idx++) cnk_arg[idx]=(char *)nco_free(cnk_arg[idx]);
    if(cnk_nbr > 0) cnk.cnk_dmn=(cnk_dmn_sct **)nco_cnk_lst_free(cnk.cnk_dmn,cnk_nbr);
    if(RECORD_AGGREGATE){
      /* Free dimension lists */
      /* ncecat-specific memory cleanup */
      if(rec_dmn_nm) rec_dmn_nm=(char *)nco_free(rec_dmn_nm);
      /* Free variable lists */
      if(xtr_nbr > 0) var=nco_var_lst_free(var,xtr_nbr);
      if(xtr_nbr > 0) var_out=nco_var_lst_free(var_out,xtr_nbr);
      var_prc=(var_sct **)nco_free(var_prc);
      var_prc_out=(var_sct **)nco_free(var_prc_out);
      var_fix=(var_sct **)nco_free(var_fix);
      var_fix_out=(var_sct **)nco_free(var_fix_out);
      if(gpe) gpe=(gpe_sct *)nco_gpe_free(gpe);
      if(md5) md5=(md5_sct *)nco_md5_free(md5);
      /* Free traversal table */
      trv_tbl_free(trv_tbl);
      for(idx=0;idx<lmt_nbr;idx++) flg_dne[idx].dim_nm=(char *)nco_free(flg_dne[idx].dim_nm);
      if(flg_dne) flg_dne=(nco_dmn_dne_t *)nco_free(flg_dne);
    } /* RECORD_AGGREGATE */
  } /* !flg_cln */

#ifdef ENABLE_MPI
  MPI_Finalize();
#endif /* !ENABLE_MPI */
  
  /* End timer */ 
  ddra_info.tmr_flg=nco_tmr_end; /* [enm] Timer flag */
  rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
  if(rcd != NC_NOERR) nco_err_exit(rcd,"main");

  nco_exit_gracefully();
  return EXIT_SUCCESS;
} /* end main() */
Пример #5
0
int 
main(int argc,char **argv)
{
  aed_sct *aed_lst_add_fst=NULL_CEWI;
  aed_sct *aed_lst_scl_fct=NULL_CEWI;

  char **dmn_rdr_lst_in=NULL_CEWI; /* Option a */
  char **fl_lst_abb=NULL; /* Option n */
  char **fl_lst_in=NULL_CEWI;
  char **gaa_arg=NULL; /* [sng] Global attribute arguments */
  char **var_lst_in=NULL_CEWI;
  char **grp_lst_in=NULL_CEWI;
  char *aux_arg[NC_MAX_DIMS];
  char *cmd_ln;
  char *cnk_arg[NC_MAX_DIMS];
  char *cnk_map_sng=NULL_CEWI; /* [sng] Chunking map */
  char *cnk_plc_sng=NULL_CEWI; /* [sng] Chunking policy */
  char *fl_in=NULL;
  char *fl_out=NULL; /* Option o */
  char *fl_out_tmp=NULL_CEWI;
  char *fl_pth=NULL; /* Option p */
  char *fl_pth_lcl=NULL; /* Option l */
  char *lmt_arg[NC_MAX_DIMS];
  char *nco_pck_plc_sng=NULL_CEWI; /* [sng] Packing policy Option P */
  char *nco_pck_map_sng=NULL_CEWI; /* [sng] Packing map Option M */
  char *opt_crr=NULL; /* [sng] String representation of current long-option name */
  char *optarg_lcl; /* [sng] Local copy of system optarg */
  char *ppc_arg[NC_MAX_VARS]; /* [sng] PPC arguments */
  char *sng_cnv_rcd=NULL_CEWI; /* [sng] strtol()/strtoul() return code */
  char add_fst_sng[]="add_offset"; /* [sng] Unidata standard string for add offset */
  char scl_fct_sng[]="scale_factor"; /* [sng] Unidata standard string for scale factor */
  char trv_pth[]="/"; /* [sng] Root path of traversal tree */

  const char * const CVS_Id="$Id$"; 
  const char * const CVS_Revision="$Revision$";
  const char * const opt_sht_lst="3467Aa:CcD:d:Fg:G:hL:l:M:Oo:P:p:Rrt:v:UxZ-:";

  cnk_sct cnk; /* [sct] Chunking structure */

#if defined(__cplusplus) || defined(PGI_CC)
  ddra_info_sct ddra_info;
  ddra_info.flg_ddra=False;
#else /* !__cplusplus */
  ddra_info_sct ddra_info={.flg_ddra=False};
#endif /* !__cplusplus */

  dmn_sct **dmn_rdr_trv=NULL; /* [sct] Dimension structures to be re-ordered (from global table) */

  extern char *optarg;
  extern int optind;

  /* Using naked stdin/stdout/stderr in parallel region generates warning
  Copy appropriate filehandle to variable scoped shared in parallel clause */
  FILE * const fp_stderr=stderr; /* [fl] stderr filehandle CEWI */
  FILE * const fp_stdout=stdout; /* [fl] stdout filehandle CEWI */

  gpe_sct *gpe=NULL; /* [sng] Group Path Editing (GPE) structure */

  int *in_id_arr;

  int abb_arg_nbr=0;
  int aux_nbr=0; /* [nbr] Number of auxiliary coordinate hyperslabs specified */
  int cnk_map=nco_cnk_map_nil; /* [enm] Chunking map */
  int cnk_nbr=0; /* [nbr] Number of chunk sizes */
  int cnk_plc=nco_cnk_plc_nil; /* [enm] Chunking policy */
  int dfl_lvl=NCO_DFL_LVL_UNDEFINED; /* [enm] Deflate level */
  int dmn_rdr_nbr=0; /* [nbr] Number of dimension to re-order */
  int dmn_rdr_nbr_trv=0; /* [nbr] Number of dimension to re-order (from global table) */
  int dmn_rdr_nbr_in=0; /* [nbr] Original number of dimension to re-order */
  int fl_idx=int_CEWI;
  int fl_nbr=0;
  int fl_in_fmt; /* [enm] Input file format */
  int fl_out_fmt=NCO_FORMAT_UNDEFINED; /* [enm] Output file format */
  int fll_md_old; /* [enm] Old fill mode */
  int gaa_nbr=0; /* [nbr] Number of global attributes to add */
  int idx=int_CEWI;
  int idx_rdr=int_CEWI;
  int in_id;  
  int lmt_nbr=0; /* Option d. NB: lmt_nbr gets incremented */
  int md_open; /* [enm] Mode flag for nc_open() call */
  int nbr_dmn_fl;
  int nbr_var_fix; /* nbr_var_fix gets incremented */
  int nbr_var_fl;
  int nbr_var_prc; /* nbr_var_prc gets incremented */
  int nco_pck_map=nco_pck_map_flt_sht; /* [enm] Packing map */
  int nco_pck_plc=nco_pck_plc_nil; /* [enm] Packing policy */
  int opt;
  int out_id;  
  int ppc_nbr=0; /* [nbr] Number of PPC arguments */
  int rcd=NC_NOERR; /* [rcd] Return code */
  int thr_idx; /* [idx] Index of current thread */
  int thr_nbr=int_CEWI; /* [nbr] Thread number Option t */
  int xtr_nbr=0; /* xtr_nbr won't otherwise be set for -c with no -v */
  int var_lst_in_nbr=0;
  int grp_lst_in_nbr=0; /* [nbr] Number of groups explicitly specified by user */

  md5_sct *md5=NULL; /* [sct] MD5 configuration */

  nco_bool *dmn_rvr_rdr=NULL; /* [flg] Reverse dimensions */
  nco_bool CNV_CCM_CCSM_CF;
  nco_bool EXCLUDE_INPUT_LIST=False; /* Option c */
  nco_bool EXTRACT_ALL_COORDINATES=False; /* Option c */
  nco_bool EXTRACT_ASSOCIATED_COORDINATES=True; /* Option C */
  nco_bool FL_RTR_RMT_LCN;
  nco_bool FL_LST_IN_FROM_STDIN=False; /* [flg] fl_lst_in comes from stdin */
  nco_bool FORCE_APPEND=False; /* Option A */
  nco_bool FORCE_OVERWRITE=False; /* Option O */
  nco_bool FORTRAN_IDX_CNV=False; /* Option F */
  nco_bool GRP_VAR_UNN=False; /* [flg] Select union of specified groups and variables */
  nco_bool HISTORY_APPEND=True; /* Option h */
  nco_bool IS_REORDER=False; /* Re-order mode */
  nco_bool MSA_USR_RDR=False; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order*/
  nco_bool RAM_CREATE=False; /* [flg] Create file in RAM */
  nco_bool RAM_OPEN=False; /* [flg] Open (netCDF3-only) file(s) in RAM */
  nco_bool RM_RMT_FL_PST_PRC=True; /* Option R */
  nco_bool WRT_TMP_FL=True; /* [flg] Write output to temporary file */
  nco_bool flg_cln=True; /* [flg] Clean memory prior to exit */
  nco_bool flg_dmn_prc_usr_spc=False; /* [flg] Processed dimensions specified on command line */

  size_t bfr_sz_hnt=NC_SIZEHINT_DEFAULT; /* [B] Buffer size hint */
  size_t cnk_min_byt=NCO_CNK_SZ_MIN_BYT_DFL; /* [B] Minimize size of variable to chunk */
  size_t cnk_sz_byt=0UL; /* [B] Chunk size in bytes */
  size_t cnk_sz_scl=0UL; /* [nbr] Chunk size scalar */
  size_t hdr_pad=0UL; /* [B] Pad at end of header section */

  var_sct **var;
  var_sct **var_fix;
  var_sct **var_fix_out;
  var_sct **var_out;
  var_sct **var_prc;
  var_sct **var_prc_out;

  trv_tbl_sct *trv_tbl=NULL; /* [lst] Traversal table */

  nco_dmn_dne_t *flg_dne=NULL; /* [lst] Flag to check if input dimension -d "does not exist" */

#ifdef ENABLE_MPI
  /* Declare all MPI-specific variables here */
  MPI_Comm mpi_cmm=MPI_COMM_WORLD; /* [prc] Communicator */
  int prc_rnk; /* [idx] Process rank */
  int prc_nbr=0; /* [nbr] Number of MPI processes */
#endif /* !ENABLE_MPI */
  
  static struct option opt_lng[]={ /* Structure ordered by short option key if possible */
    /* Long options with no argument, no short option counterpart */
    {"cln",no_argument,0,0}, /* [flg] Clean memory prior to exit */
    {"clean",no_argument,0,0}, /* [flg] Clean memory prior to exit */
    {"mmr_cln",no_argument,0,0}, /* [flg] Clean memory prior to exit */
    {"drt",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
    {"dirty",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
    {"mmr_drt",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
    {"hdf4",no_argument,0,0}, /* [flg] Treat file as HDF4 */
    {"hdf_upk",no_argument,0,0}, /* [flg] HDF unpack convention: unpacked=scale_factor*(packed-add_offset) */
    {"hdf_unpack",no_argument,0,0}, /* [flg] HDF unpack convention: unpacked=scale_factor*(packed-add_offset) */
    {"mrd",no_argument,0,0}, /* [enm] Multiple Record Dimension convention */
    {"multiple_record_dimension",no_argument,0,0}, /* [enm] Multiple Record Dimension convention */
    {"msa_usr_rdr",no_argument,0,0}, /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
    {"msa_user_order",no_argument,0,0}, /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
    {"ram_all",no_argument,0,0}, /* [flg] Open (netCDF3) and create file(s) in RAM */
    {"create_ram",no_argument,0,0}, /* [flg] Create file in RAM */
    {"open_ram",no_argument,0,0}, /* [flg] Open (netCDF3) file(s) in RAM */
    {"diskless_all",no_argument,0,0}, /* [flg] Open (netCDF3) and create file(s) in RAM */
    {"wrt_tmp_fl",no_argument,0,0}, /* [flg] Write output to temporary file */
    {"write_tmp_fl",no_argument,0,0}, /* [flg] Write output to temporary file */
    {"no_tmp_fl",no_argument,0,0}, /* [flg] Do not write output to temporary file */
    {"intersection",no_argument,0,0}, /* [flg] Select intersection of specified groups and variables */
    {"nsx",no_argument,0,0}, /* [flg] Select intersection of specified groups and variables */
    {"union",no_argument,0,0}, /* [flg] Select union of specified groups and variables */
    {"unn",no_argument,0,0}, /* [flg] Select union of specified groups and variables */
    {"version",no_argument,0,0},
    {"vrs",no_argument,0,0},
    /* Long options with argument, no short option counterpart */
    {"bfr_sz_hnt",required_argument,0,0}, /* [B] Buffer size hint */
    {"buffer_size_hint",required_argument,0,0}, /* [B] Buffer size hint */
    {"cnk_byt",required_argument,0,0}, /* [B] Chunk size in bytes */
    {"chunk_byte",required_argument,0,0}, /* [B] Chunk size in bytes */
    {"cnk_dmn",required_argument,0,0}, /* [nbr] Chunk size */
    {"chunk_dimension",required_argument,0,0}, /* [nbr] Chunk size */
    {"cnk_map",required_argument,0,0}, /* [nbr] Chunking map */
    {"chunk_map",required_argument,0,0}, /* [nbr] Chunking map */
    {"cnk_min",required_argument,0,0}, /* [B] Minimize size of variable to chunk */
    {"chunk_min",required_argument,0,0}, /* [B] Minimize size of variable to chunk */
    {"cnk_plc",required_argument,0,0}, /* [nbr] Chunking policy */
    {"chunk_policy",required_argument,0,0}, /* [nbr] Chunking policy */
    {"cnk_scl",required_argument,0,0}, /* [nbr] Chunk size scalar */
    {"chunk_scalar",required_argument,0,0}, /* [nbr] Chunk size scalar */
    {"fl_fmt",required_argument,0,0},
    {"file_format",required_argument,0,0},
    {"gaa",required_argument,0,0}, /* [sng] Global attribute add */
    {"glb_att_add",required_argument,0,0}, /* [sng] Global attribute add */
    {"hdr_pad",required_argument,0,0},
    {"header_pad",required_argument,0,0},
    {"ppc",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
    {"precision_preserving_compression",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
    {"quantize",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
    {"upk",required_argument,0,0}, /* [enm] Unpacking convention to utilize */
    /* Long options with short counterparts */
    {"3",no_argument,0,'3'},
    {"4",no_argument,0,'4'},
    {"64bit",no_argument,0,'4'},
    {"netcdf4",no_argument,0,'4'},
    {"append",no_argument,0,'A'},
    {"arrange",required_argument,0,'a'},
    {"permute",required_argument,0,'a'},
    {"reorder",required_argument,0,'a'},
    {"rdr",required_argument,0,'a'},
    {"no-coords",no_argument,0,'C'},
    {"no-crd",no_argument,0,'C'},
    {"coords",no_argument,0,'c'},
    {"crd",no_argument,0,'c'},
    {"debug",required_argument,0,'D'},
    {"nco_dbg_lvl",required_argument,0,'D'},
    {"dimension",required_argument,0,'d'},
    {"dmn",required_argument,0,'d'},
    {"fortran",no_argument,0,'F'},
    {"ftn",no_argument,0,'F'},
    {"gpe",required_argument,0,'G'}, /* [sng] Group Path Edit (GPE) */
    {"grp",required_argument,0,'g'},
    {"group",required_argument,0,'g'},
    {"history",no_argument,0,'h'},
    {"hst",no_argument,0,'h'},
    {"dfl_lvl",required_argument,0,'L'}, /* [enm] Deflate level */
    {"deflate",required_argument,0,'L'}, /* [enm] Deflate level */
    {"local",required_argument,0,'l'},
    {"lcl",required_argument,0,'l'},
    {"pack_map",required_argument,0,'M'},
    {"pck_map",required_argument,0,'M'},
    {"map",required_argument,0,'M'},
    {"overwrite",no_argument,0,'O'},
    {"ovr",no_argument,0,'O'},
    {"output",required_argument,0,'o'},
    {"fl_out",required_argument,0,'o'},
    {"pack_policy",required_argument,0,'P'},
    {"pck_plc",required_argument,0,'P'},
    {"path",required_argument,0,'p'},
    {"retain",no_argument,0,'R'},
    {"rtn",no_argument,0,'R'},
    {"revision",no_argument,0,'r'},
    {"thr_nbr",required_argument,0,'t'},
    {"threads",required_argument,0,'t'},
    {"omp_num_threads",required_argument,0,'t'},
    {"unpack",no_argument,0,'U'},
    {"variable",required_argument,0,'v'},
    {"auxiliary",required_argument,0,'X'},
    {"exclude",no_argument,0,'x'},
    {"xcl",no_argument,0,'x'},
    {"help",no_argument,0,'?'},
    {"hlp",no_argument,0,'?'},
    {0,0,0,0}
  }; /* end opt_lng */
  int opt_idx=0; /* Index of current long option into opt_lng array */

  /* Initialize traversal table */ 
  trv_tbl_init(&trv_tbl);

  /* Start timer and save command line */ 
  ddra_info.tmr_flg=nco_tmr_srt;
  rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
  ddra_info.tmr_flg=nco_tmr_mtd;
  cmd_ln=nco_cmd_ln_sng(argc,argv);

  /* Get program name and set program enum (e.g., nco_prg_id=ncra) */
  nco_prg_nm=nco_prg_prs(argv[0],&nco_prg_id);

#ifdef ENABLE_MPI
  /* MPI Initialization */
  if(False) (void)fprintf(stdout,gettext("%s: WARNING Compiled with MPI\n"),nco_prg_nm);
  MPI_Init(&argc,&argv);
  MPI_Comm_size(mpi_cmm,&prc_nbr);
  MPI_Comm_rank(mpi_cmm,&prc_rnk);
#endif /* !ENABLE_MPI */
  
  /* Parse command line arguments */
  while(1){
    /* getopt_long_only() allows one dash to prefix long options */
    opt=getopt_long(argc,argv,opt_sht_lst,opt_lng,&opt_idx);
    /* NB: access to opt_crr is only valid when long_opt is detected */
    if(opt == EOF) break; /* Parse positional arguments once getopt_long() returns EOF */
    opt_crr=(char *)strdup(opt_lng[opt_idx].name);

    /* Process long options without short option counterparts */
    if(opt == 0){
      if(!strcmp(opt_crr,"bfr_sz_hnt") || !strcmp(opt_crr,"buffer_size_hint")){
        bfr_sz_hnt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_byt") || !strcmp(opt_crr,"chunk_byte")){
        cnk_sz_byt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk_byt */
      if(!strcmp(opt_crr,"cnk_min") || !strcmp(opt_crr,"chunk_min")){
        cnk_min_byt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk_min */
      if(!strcmp(opt_crr,"cnk_dmn") || !strcmp(opt_crr,"chunk_dimension")){
        /* Copy limit argument for later processing */
        cnk_arg[cnk_nbr]=(char *)strdup(optarg);
        cnk_nbr++;
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_scl") || !strcmp(opt_crr,"chunk_scalar")){
        cnk_sz_scl=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_map") || !strcmp(opt_crr,"chunk_map")){
        /* Chunking map */
        cnk_map_sng=(char *)strdup(optarg);
        cnk_map=nco_cnk_map_get(cnk_map_sng);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_plc") || !strcmp(opt_crr,"chunk_policy")){
        /* Chunking policy */
        cnk_plc_sng=(char *)strdup(optarg);
        cnk_plc=nco_cnk_plc_get(cnk_plc_sng);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cln") || !strcmp(opt_crr,"mmr_cln") || !strcmp(opt_crr,"clean")) flg_cln=True; /* [flg] Clean memory prior to exit */
      if(!strcmp(opt_crr,"drt") || !strcmp(opt_crr,"mmr_drt") || !strcmp(opt_crr,"dirty")) flg_cln=False; /* [flg] Clean memory prior to exit */
      if(!strcmp(opt_crr,"fl_fmt") || !strcmp(opt_crr,"file_format")) rcd=nco_create_mode_prs(optarg,&fl_out_fmt);
      if(!strcmp(opt_crr,"gaa") || !strcmp(opt_crr,"glb_att_add")){
        gaa_arg=(char **)nco_realloc(gaa_arg,(gaa_nbr+1)*sizeof(char *));
        gaa_arg[gaa_nbr++]=(char *)strdup(optarg);
      } /* endif gaa */
      if(!strcmp(opt_crr,"hdf4")) nco_fmt_xtn=nco_fmt_xtn_hdf4; /* [enm] Treat file as HDF4 */
      if(!strcmp(opt_crr,"hdf_upk") || !strcmp(opt_crr,"hdf_unpack")) nco_upk_cnv=nco_upk_HDF_MOD10; /* [flg] HDF unpack convention: unpacked=scale_factor*(packed-add_offset) */
      if(!strcmp(opt_crr,"hdr_pad") || !strcmp(opt_crr,"header_pad")){
        hdr_pad=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif "hdr_pad" */
      if(!strcmp(opt_crr,"ppc") || !strcmp(opt_crr,"precision_preserving_compression") || !strcmp(opt_crr,"quantize")){
        ppc_arg[ppc_nbr]=(char *)strdup(optarg);
        ppc_nbr++;
      } /* endif "ppc" */
      if(!strcmp(opt_crr,"mrd") || !strcmp(opt_crr,"multiple_record_dimension")) nco_mrd_cnv=nco_mrd_allow; /* [enm] Multiple Record Dimension convention */
      if(!strcmp(opt_crr,"msa_usr_rdr") || !strcmp(opt_crr,"msa_user_order")) MSA_USR_RDR=True; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
      if(!strcmp(opt_crr,"ram_all") || !strcmp(opt_crr,"create_ram") || !strcmp(opt_crr,"diskless_all")) RAM_CREATE=True; /* [flg] Open (netCDF3) file(s) in RAM */
      if(!strcmp(opt_crr,"ram_all") || !strcmp(opt_crr,"open_ram") || !strcmp(opt_crr,"diskless_all")) RAM_OPEN=True; /* [flg] Create file in RAM */
      if(!strcmp(opt_crr,"unn") || !strcmp(opt_crr,"union")) GRP_VAR_UNN=True;
      if(!strcmp(opt_crr,"nsx") || !strcmp(opt_crr,"intersection")) GRP_VAR_UNN=False;
      if(!strcmp(opt_crr,"upk")){ /* [enm] Unpacking convention to utilize */
        nco_upk_cnv=(int)strtol(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtol",sng_cnv_rcd);
      } /* endif "hdr_pad" */
      if(!strcmp(opt_crr,"vrs") || !strcmp(opt_crr,"version")){
        (void)nco_vrs_prn(CVS_Id,CVS_Revision);
        nco_exit(EXIT_SUCCESS);
      } /* endif "vrs" */
      if(!strcmp(opt_crr,"wrt_tmp_fl") || !strcmp(opt_crr,"write_tmp_fl")) WRT_TMP_FL=True;
      if(!strcmp(opt_crr,"no_tmp_fl")) WRT_TMP_FL=False;
    } /* opt != 0 */
    /* Process short options */
    switch(opt){
    case 0: /* Long options have already been processed, return */
      break;
    case '3': /* Request netCDF3 output storage format */
      fl_out_fmt=NC_FORMAT_CLASSIC;
      break;
    case '4': /* Catch-all to prescribe output storage format */
      if(!strcmp(opt_crr,"64bit")) fl_out_fmt=NC_FORMAT_64BIT; else fl_out_fmt=NC_FORMAT_NETCDF4; 
      break;
    case '6': /* Request netCDF3 64-bit offset output storage format */
      fl_out_fmt=NC_FORMAT_64BIT;
      break;
    case '7': /* Request netCDF4-classic output storage format */
      fl_out_fmt=NC_FORMAT_NETCDF4_CLASSIC;
      break;
    case 'A': /* Toggle FORCE_APPEND */
      FORCE_APPEND=!FORCE_APPEND;
      break;
    case 'a': /* Re-order dimensions */
      flg_dmn_prc_usr_spc=True;
      dmn_rdr_lst_in=nco_lst_prs_2D(optarg,",",&dmn_rdr_nbr_in);
      dmn_rdr_nbr=dmn_rdr_nbr_in;
      break;
    case 'C': /* Extract all coordinates associated with extracted variables? */
      EXTRACT_ASSOCIATED_COORDINATES=False;
      break;
    case 'c':
      EXTRACT_ALL_COORDINATES=True;
      break;
    case 'D': /* Debugging level. Default is 0. */
      nco_dbg_lvl=(unsigned short int)strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      nc_set_log_level(nco_dbg_lvl);
      break;
    case 'd': /* Copy limit argument for later processing */
      lmt_arg[lmt_nbr]=(char *)strdup(optarg);
      lmt_nbr++;
      break;
    case 'F': /* Toggle index convention. Default is 0-based arrays (C-style). */
      FORTRAN_IDX_CNV=!FORTRAN_IDX_CNV;
      break;
    case 'G': /* Apply Group Path Editing (GPE) to output group */
      /* NB: GNU getopt() optional argument syntax is ugly (requires "=" sign) so avoid it
      http://stackoverflow.com/questions/1052746/getopt-does-not-parse-optional-arguments-to-parameters */
      gpe=nco_gpe_prs_arg(optarg);
      fl_out_fmt=NC_FORMAT_NETCDF4; 
      break;
    case 'g': /* Copy group argument for later processing */
      /* Replace commas with hashes when within braces (convert back later) */
      optarg_lcl=(char *)strdup(optarg);
      (void)nco_rx_comma2hash(optarg_lcl);
      grp_lst_in=nco_lst_prs_2D(optarg_lcl,",",&grp_lst_in_nbr);
      optarg_lcl=(char *)nco_free(optarg_lcl);
      break;
    case 'h': /* Toggle appending to history global attribute */
      HISTORY_APPEND=!HISTORY_APPEND;
      break;
    case 'L': /* [enm] Deflate level. Default is 0. */
      dfl_lvl=(int)strtol(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtol",sng_cnv_rcd);
      break;
    case 'l': /* Local path prefix for files retrieved from remote file system */
      fl_pth_lcl=(char *)strdup(optarg);
      break;
    case 'M': /* Packing map */
      nco_pck_map_sng=(char *)strdup(optarg);
      nco_pck_map=nco_pck_map_get(nco_pck_map_sng);
      break;
    case 'O': /* Toggle FORCE_OVERWRITE */
      FORCE_OVERWRITE=!FORCE_OVERWRITE;
      break;
    case 'o': /* Name of output file */
      fl_out=(char *)strdup(optarg);
      break;
    case 'P': /* Packing policy */
      nco_pck_plc_sng=(char *)strdup(optarg);
      break;
    case 'p': /* Common file path */
      fl_pth=(char *)strdup(optarg);
      break;
    case 'R': /* Toggle removal of remotely-retrieved-files. Default is True. */
      RM_RMT_FL_PST_PRC=!RM_RMT_FL_PST_PRC;
      break;
    case 'r': /* Print CVS program information and copyright notice */
      (void)nco_vrs_prn(CVS_Id,CVS_Revision);
      (void)nco_lbr_vrs_prn();
      (void)nco_cpy_prn();
      (void)nco_cnf_prn();
      nco_exit(EXIT_SUCCESS);
      break;
    case 't': /* Thread number */
      thr_nbr=(int)strtol(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtol",sng_cnv_rcd);
      break;
    case 'U': /* Unpacking switch */
      nco_pck_plc_sng=(char *)strdup("upk");
      break;
    case 'v': /* Variables to extract/exclude */
      /* Replace commas with hashes when within braces (convert back later) */
      optarg_lcl=(char *)strdup(optarg);
      (void)nco_rx_comma2hash(optarg_lcl);
      var_lst_in=nco_lst_prs_2D(optarg_lcl,",",&var_lst_in_nbr);
      optarg_lcl=(char *)nco_free(optarg_lcl);
      xtr_nbr=var_lst_in_nbr;
      break;
    case 'X': /* Copy auxiliary coordinate argument for later processing */
      aux_arg[aux_nbr]=(char *)strdup(optarg);
      aux_nbr++;
      MSA_USR_RDR=True; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */      
      break;
    case 'x': /* Exclude rather than extract variables specified with -v */
      EXCLUDE_INPUT_LIST=True;
      break;
    case '?': /* Print proper usage */
      (void)nco_usg_prn();
      nco_exit(EXIT_SUCCESS);
      break;
    case '-': /* Long options are not allowed */
      (void)fprintf(stderr,"%s: ERROR Long options are not available in this build. Use single letter options instead.\n",nco_prg_nm_get());
      nco_exit(EXIT_FAILURE);
      break;
    default: /* Print proper usage */
      (void)fprintf(stdout,"%s ERROR in command-line syntax/options. Please reformulate command accordingly.\n",nco_prg_nm_get());
      (void)nco_usg_prn();
      nco_exit(EXIT_FAILURE);
      break;
    } /* end switch */
    if(opt_crr) opt_crr=(char *)nco_free(opt_crr);
  } /* end while loop */

  /* Set re-order flag */
  if(dmn_rdr_nbr > 0) IS_REORDER=True; 

  /* No re-order dimensions specified implies packing request */
  if(dmn_rdr_nbr == 0){
    if(nco_pck_plc == nco_pck_plc_nil) nco_pck_plc=nco_pck_plc_get(nco_pck_plc_sng);
    if(nco_dbg_lvl >= nco_dbg_scl) (void)fprintf(stderr,"%s: DEBUG Packing map is %s and packing policy is %s\n",nco_prg_nm_get(),nco_pck_map_sng_get(nco_pck_map),nco_pck_plc_sng_get(nco_pck_plc));
  } /* dmn_rdr_nbr != 0 */

  /* From this point forward, assume ncpdq operator packs or re-orders, not both */
  if(dmn_rdr_nbr > 0 && nco_pck_plc != nco_pck_plc_nil){
    (void)fprintf(fp_stdout,"%s: ERROR %s does not support simultaneous dimension re-ordering  (-a switch) and packing (-P switch).\nHINT: Invoke %s twice, once to re-order (with -a), and once to pack (with -P).\n",nco_prg_nm,nco_prg_nm,nco_prg_nm);
    nco_exit(EXIT_FAILURE);
  } /* endif */

  /* Process positional arguments and fill in filenames */
  fl_lst_in=nco_fl_lst_mk(argv,argc,optind,&fl_nbr,&fl_out,&FL_LST_IN_FROM_STDIN);

  /* Initialize thread information */
  thr_nbr=nco_openmp_ini(thr_nbr);
  in_id_arr=(int *)nco_malloc(thr_nbr*sizeof(int));

  /* Parse filename */
  fl_in=nco_fl_nm_prs(fl_in,0,&fl_nbr,fl_lst_in,abb_arg_nbr,fl_lst_abb,fl_pth);
  /* Make sure file is on local system and is readable or die trying */
  fl_in=nco_fl_mk_lcl(fl_in,fl_pth_lcl,&FL_RTR_RMT_LCN);
  /* Open file using appropriate buffer size hints and verbosity */
  if(RAM_OPEN) md_open=NC_NOWRITE|NC_DISKLESS; else md_open=NC_NOWRITE;
  rcd+=nco_fl_open(fl_in,md_open,&bfr_sz_hnt,&in_id);

  /* Get file format */
  (void)nco_inq_format(in_id,&fl_in_fmt);

  /* Construct GTT, Group Traversal Table (groups,variables,dimensions, limits) */
  (void)nco_bld_trv_tbl(in_id,trv_pth,lmt_nbr,lmt_arg,aux_nbr,aux_arg,MSA_USR_RDR,FORTRAN_IDX_CNV,grp_lst_in,grp_lst_in_nbr,var_lst_in,xtr_nbr,EXTRACT_ALL_COORDINATES,GRP_VAR_UNN,False,EXCLUDE_INPUT_LIST,EXTRACT_ASSOCIATED_COORDINATES,nco_pck_plc_nil,&flg_dne,trv_tbl);

  /* Were all user-specified dimensions found? */ 
  (void)nco_chk_dmn(lmt_nbr,flg_dne);     

  /* Create reversed dimension list */
  if(dmn_rdr_nbr_in > 0){
    dmn_rvr_rdr=(nco_bool *)nco_malloc(dmn_rdr_nbr_in*sizeof(nco_bool));
    /* Is dimension to be reversed? i.e., does string begin with minus-sign '-'? */
    for(idx_rdr=0;idx_rdr<dmn_rdr_nbr_in;idx_rdr++){
      if(dmn_rdr_lst_in[idx_rdr][0] == '-'){
        dmn_rvr_rdr[idx_rdr]=True;
        /* Strip-out '-': Copy string to new memory one past negative sign to avoid losing byte */
        optarg_lcl=dmn_rdr_lst_in[idx_rdr];
        dmn_rdr_lst_in[idx_rdr]=(char *)strdup(optarg_lcl+1L);
        optarg_lcl=(char *)nco_free(optarg_lcl);
      }else{
        dmn_rvr_rdr[idx_rdr]=False;
      } /* !'-' */
    } /* !idx_rdr */
  } /* !dmn_rdr_nbr_in */

  /* Get number of variables, dimensions, and global attributes in file, file format */
  (void)trv_tbl_inq((int *)NULL,(int *)NULL,(int *)NULL,&nbr_dmn_fl,(int *)NULL,(int *)NULL,(int *)NULL,(int *)NULL,&nbr_var_fl,trv_tbl);

  /* Create list of dimensions to average(ncwa)/re-order(ncpdq) */
  if(IS_REORDER) (void)nco_dmn_avg_mk(in_id,dmn_rdr_lst_in,dmn_rdr_nbr_in,flg_dmn_prc_usr_spc,False,trv_tbl,&dmn_rdr_trv,&dmn_rdr_nbr_trv);

  /* Fill-in variable structure list for all extracted variables */
  var=nco_fll_var_trv(in_id,&xtr_nbr,trv_tbl);

  /* Duplicate to output array */
  var_out=(var_sct **)nco_malloc(xtr_nbr*sizeof(var_sct *));
  for(idx=0;idx<xtr_nbr;idx++){
    var_out[idx]=nco_var_dpl(var[idx]);
    (void)nco_xrf_var(var[idx],var_out[idx]);
    (void)nco_xrf_dmn(var_out[idx]);
  } /* end loop over variables */

  /* Refresh var_out with dim_out data */
  (void)nco_var_dmn_refresh(var_out,xtr_nbr);

  /* Is this a CCM/CCSM/CF-format history tape? */
  CNV_CCM_CCSM_CF=nco_cnv_ccm_ccsm_cf_inq(in_id);

  /* Divide variable lists into lists of fixed variables and variables to be processed */
  (void)nco_var_lst_dvd(var,var_out,xtr_nbr,CNV_CCM_CCSM_CF,True,nco_pck_map,nco_pck_plc,dmn_rdr_trv,dmn_rdr_nbr_trv,&var_fix,&var_fix_out,&nbr_var_fix,&var_prc,&var_prc_out,&nbr_var_prc,trv_tbl);

  /* Store processed and fixed variables info into GTT */
  (void)nco_var_prc_fix_trv(nbr_var_prc,var_prc,nbr_var_fix,var_fix,trv_tbl);

  /* We now have final list of variables to extract. Phew. */

  /* Make output and input files consanguinous */
  if(fl_out_fmt == NCO_FORMAT_UNDEFINED) fl_out_fmt=fl_in_fmt;

  /* Initialize, decode, and set PPC information */
  if(ppc_nbr > 0) nco_ppc_ini(in_id,&dfl_lvl,fl_out_fmt,ppc_arg,ppc_nbr,trv_tbl);

  /* Verify output file format supports requested actions */
  (void)nco_fl_fmt_vet(fl_out_fmt,cnk_nbr,dfl_lvl);

  /* Open output file */
  fl_out_tmp=nco_fl_out_open(fl_out,&FORCE_APPEND,FORCE_OVERWRITE,fl_out_fmt,&bfr_sz_hnt,RAM_CREATE,RAM_OPEN,WRT_TMP_FL,&out_id);

  /* Initialize chunking from user-specified inputs */
  if(fl_out_fmt == NC_FORMAT_NETCDF4 || fl_out_fmt == NC_FORMAT_NETCDF4_CLASSIC) rcd+=nco_cnk_ini(in_id,fl_out,cnk_arg,cnk_nbr,cnk_map,cnk_plc,cnk_min_byt,cnk_sz_byt,cnk_sz_scl,&cnk);

  if(IS_REORDER){

    dmn_sct **dmn_rdr=NULL; /* [sct] Dimension structures to be re-ordered */

    /* "dmn_rdr" is only used for input to function nco_var_dmn_rdr_mtd(), that compares dimensions by short name;
       this is because the input list of -a are dimension short names; group support is obtained combining with -g option;
       on input it contains a list of dimension short names (in "dmn_rdr"), that together with input array "dmn_rvr_rdr"
       of flags that determine if dimension at index dmn_rvr_rdr[index] is to be reversed; use cases:
       in_grp_8.nc contains the dimensions /g1/lat, /g1/lon, /g2/lat, /g2/lon
       ncpdq -O -v lat,lon -a -lat,-lon -g g1,g2 ~/nco/data/in_grp_8.nc out1.nc
       "dmn_rdr" contains names ["lat"], ["lon"],  striped of '-' (minus) sign and dmn_rvr_rdr contains [True],[True ]
       output is reversed /g1/lat, /g1/lon, /g2/lat, /g2/lon
       ncpdq -O -v lat,lon -a lat,-lon -g g1,g2 ~/nco/data/in_grp_8.nc out1.nc
       "dmn_rdr" contains names ["lat"], ["lon"], and dmn_rvr_rdr contains [False],[True ] 
       output is reversed /g1/lon, /g2/lon */

    /* Form list of re-ordering dimensions from extracted input dimensions */
    dmn_rdr=(dmn_sct **)nco_malloc(dmn_rdr_nbr*sizeof(dmn_sct *));

    /* Initialize re-ordering dimensions; initialize only short name */
    for(idx_rdr=0;idx_rdr<dmn_rdr_nbr_in;idx_rdr++){
      dmn_rdr[idx_rdr]=(dmn_sct *)nco_malloc(sizeof(dmn_sct));
      dmn_rdr[idx_rdr]->nm=(char *)strdup(dmn_rdr_lst_in[idx_rdr]);
      dmn_rdr[idx_rdr]->nm_fll=NULL;
      dmn_rdr[idx_rdr]->id=-1;
    }

    /* Determine and set new dimensionality in metadata of each re-ordered variable */
    (void)nco_var_dmn_rdr_mtd_trv(trv_tbl,nbr_var_prc,var_prc,var_prc_out,nbr_var_fix,var_fix,dmn_rdr,dmn_rdr_nbr,dmn_rvr_rdr);

    for(idx_rdr=0; idx_rdr<dmn_rdr_nbr_in; idx_rdr++){
      dmn_rdr[idx_rdr]->nm=(char *)nco_free(dmn_rdr[idx_rdr]->nm);
      dmn_rdr[idx_rdr]=(dmn_sct *)nco_free(dmn_rdr[idx_rdr]);
    }
    dmn_rdr=(dmn_sct **)nco_free(dmn_rdr);
  } /* IS_REORDER */

  /* Alter metadata for variables that will be packed */
  if(nco_pck_plc != nco_pck_plc_nil){
    if(nco_pck_plc != nco_pck_plc_upk){
      /* Allocate attribute list container for maximum number of entries */
      aed_lst_add_fst=(aed_sct *)nco_malloc(nbr_var_prc*sizeof(aed_sct));
      aed_lst_scl_fct=(aed_sct *)nco_malloc(nbr_var_prc*sizeof(aed_sct));
    } /* endif packing */
    for(idx=0;idx<nbr_var_prc;idx++){
      nco_pck_mtd(var_prc[idx],var_prc_out[idx],nco_pck_map,nco_pck_plc);
      if(nco_pck_plc != nco_pck_plc_upk){
        /* Use same copy of attribute name for all edits */
        aed_lst_add_fst[idx].att_nm=add_fst_sng;
        aed_lst_scl_fct[idx].att_nm=scl_fct_sng;
      } /* endif packing */
    } /* end loop over var_prc */

    /* Transfer variable type to table. NB: Use processed variables set with new type. MUST be done before definition */
    (void)nco_var_typ_trv(nbr_var_prc,var_prc_out,trv_tbl);    
  } /* nco_pck_plc == nco_pck_plc_nil */

  /* Define dimensions, extracted groups, variables, and attributes in output file. NB: record name is NULL */
  (void)nco_xtr_dfn(in_id,out_id,&cnk,dfl_lvl,gpe,md5,!FORCE_APPEND,True,False,nco_pck_plc,(char *)NULL,trv_tbl);

  /* Catenate time-stamped command line to "history" global attribute */
  if(HISTORY_APPEND) (void)nco_hst_att_cat(out_id,cmd_ln);
  if(HISTORY_APPEND && FORCE_APPEND) (void)nco_prv_att_cat(fl_in,in_id,out_id);
  if(gaa_nbr > 0) (void)nco_glb_att_add(out_id,gaa_arg,gaa_nbr);
  if(HISTORY_APPEND) (void)nco_vrs_att_cat(out_id);
  if(thr_nbr > 0 && HISTORY_APPEND) (void)nco_thr_att_cat(out_id,thr_nbr);

  /* Turn-off default filling behavior to enhance efficiency */
  nco_set_fill(out_id,NC_NOFILL,&fll_md_old);

  /* Take output file out of define mode */
  if(hdr_pad == 0UL){
    (void)nco_enddef(out_id);
  }else{
    (void)nco__enddef(out_id,hdr_pad);
    if(nco_dbg_lvl >= nco_dbg_scl) (void)fprintf(stderr,"%s: INFO Padding header with %lu extra bytes\n",nco_prg_nm_get(),(unsigned long)hdr_pad);
  } /* hdr_pad */

  /* Assign zero to start and unity to stride vectors in output variables */
  (void)nco_var_srd_srt_set(var_out,xtr_nbr);

  /* Copy variable data for non-processed variables */
  (void)nco_cpy_fix_var_trv(in_id,out_id,gpe,trv_tbl);  

  /* Close first input netCDF file */
  nco_close(in_id);

  /* Loop over input files (not currently used, fl_nbr == 1) */
  for(fl_idx=0;fl_idx<fl_nbr;fl_idx++){

    /* Parse filename */
    if(fl_idx != 0) fl_in=nco_fl_nm_prs(fl_in,fl_idx,&fl_nbr,fl_lst_in,abb_arg_nbr,fl_lst_abb,fl_pth);
    if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"%s: INFO Input file %d is %s",nco_prg_nm_get(),fl_idx,fl_in);

    /* Make sure file is on local system and is readable or die trying */
    if(fl_idx != 0) fl_in=nco_fl_mk_lcl(fl_in,fl_pth_lcl,&FL_RTR_RMT_LCN);
    if(nco_dbg_lvl >= nco_dbg_fl && FL_RTR_RMT_LCN) (void)fprintf(stderr,", local file is %s",fl_in);
    if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"\n");

    /* Open file once per thread to improve caching */
    for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) rcd+=nco_fl_open(fl_in,md_open,&bfr_sz_hnt,in_id_arr+thr_idx);

    /* Timestamp end of metadata setup and disk layout */
    rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
    ddra_info.tmr_flg=nco_tmr_rgl;

#ifdef _OPENMP
#pragma omp parallel for default(none) private(idx,in_id) shared(aed_lst_add_fst,aed_lst_scl_fct,nco_dbg_lvl,dmn_rdr_nbr,gpe,in_id_arr,nbr_var_prc,nco_pck_map,nco_pck_plc,out_id,nco_prg_nm,rcd,var_prc,var_prc_out,nbr_dmn_fl,trv_tbl,IS_REORDER,fl_out_fmt)
#endif /* !_OPENMP */

    /* Process all variables in current file */
    for(idx=0;idx<nbr_var_prc;idx++){ 

      char *grp_out_fll=NULL; /* [sng] Group name */

      int grp_out_id;    /* [ID] Group ID (output) */
      int var_out_id;    /* [ID] Variable ID (output) */

      trv_sct *var_trv;  /* [sct] Variable GTT object */

      in_id=in_id_arr[omp_get_thread_num()];
      var_prc[idx]->nc_id=in_id; 

      if(nco_dbg_lvl >= nco_dbg_var) rcd+=nco_var_prc_crr_prn(idx,var_prc[idx]->nm);
      if(nco_dbg_lvl >= nco_dbg_var) (void)fflush(fp_stderr);

      /* Obtain variable GTT object using full variable name */
      var_trv=trv_tbl_var_nm_fll(var_prc[idx]->nm_fll,trv_tbl);

      /* Retrieve variable from disk into memory */
      (void)nco_msa_var_get_trv(in_id,var_prc[idx],trv_tbl);

      /* If re-ordering */
      if(IS_REORDER){
        if((var_prc_out[idx]->val.vp=(void *)nco_malloc_flg(var_prc_out[idx]->sz*nco_typ_lng(var_prc_out[idx]->type))) == NULL){
          (void)fprintf(fp_stdout,"%s: ERROR Unable to malloc() %ld*%lu bytes for value buffer for variable %s in main()\n",nco_prg_nm_get(),var_prc_out[idx]->sz,(unsigned long)nco_typ_lng(var_prc_out[idx]->type),var_prc_out[idx]->nm);
          nco_exit(EXIT_FAILURE); 
        } /* endif err */

        /* Change dimensionionality of values */
        (void)nco_var_dmn_rdr_val_trv(var_prc[idx],var_prc_out[idx],trv_tbl);

        /* Re-ordering required two value buffers, time to free() input buffer */
        var_prc[idx]->val.vp=nco_free(var_prc[idx]->val.vp);
      } /* IS_REORDER */

      /* Edit group name for output */
      if(gpe) grp_out_fll=nco_gpe_evl(gpe,var_trv->grp_nm_fll); else grp_out_fll=(char *)strdup(var_trv->grp_nm_fll);

      /* Obtain output group ID */
      (void)nco_inq_grp_full_ncid(out_id,grp_out_fll,&grp_out_id);

      /* Memory management after current extracted group */
      if(grp_out_fll) grp_out_fll=(char *)nco_free(grp_out_fll);

      /* Get variable ID */
      (void)nco_inq_varid(grp_out_id,var_trv->nm,&var_out_id);

      /* Store the output variable ID */
      var_prc_out[idx]->id=var_out_id;

      if(nco_pck_plc != nco_pck_plc_nil){
        /* Copy input variable buffer to processed variable buffer */
        /* fxm: this is dangerous and leads to double free()'ing variable buffer */
        var_prc_out[idx]->val=var_prc[idx]->val;
        /* (Un-)Pack variable according to packing specification */
        nco_pck_val(var_prc[idx],var_prc_out[idx],nco_pck_map,nco_pck_plc,aed_lst_add_fst+idx,aed_lst_scl_fct+idx);
      } /* endif nco_pck_plc != nco_pck_plc_nil */

      if(var_trv->ppc != NC_MAX_INT){
        if(var_trv->flg_nsd) (void)nco_ppc_bitmask(var_trv->ppc, var_prc_out[idx]->type, var_prc_out[idx]->sz, var_prc_out[idx]->has_mss_val, var_prc_out[idx]->mss_val, var_prc_out[idx]->val); else (void)nco_ppc_around(var_trv->ppc, var_prc_out[idx]->type, var_prc_out[idx]->sz, var_prc_out[idx]->has_mss_val, var_prc_out[idx]->mss_val, var_prc_out[idx]->val);
      } /* endif ppc */
      if(nco_is_xcp(var_trv->nm)) nco_xcp_prc(var_trv->nm,var_prc_out[idx]->type,var_prc_out[idx]->sz,(char *)var_prc_out[idx]->val.vp);

#ifdef _OPENMP
#pragma omp critical
#endif /* _OPENMP */
      { /* begin OpenMP critical */
        /* Copy variable to output file then free value buffer */
        if(var_prc_out[idx]->nbr_dim == 0){
          (void)nco_put_var1(grp_out_id,var_prc_out[idx]->id,var_prc_out[idx]->srt,var_prc_out[idx]->val.vp,var_prc_out[idx]->type);
        }else{ /* end if variable is scalar */
          (void)nco_put_vara(grp_out_id,var_prc_out[idx]->id,var_prc_out[idx]->srt,var_prc_out[idx]->cnt,var_prc_out[idx]->val.vp,var_prc_out[idx]->type);
        } /* end if variable is array */
      } /* end OpenMP critical */
      /* Free current output buffer */
      var_prc_out[idx]->val.vp=nco_free(var_prc_out[idx]->val.vp);

    } /* end (OpenMP parallel for) loop over idx */

    if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(fp_stderr,"\n");

    /* Write/overwrite packing attributes for newly packed and re-packed variables 
       Logic here should nearly mimic logic in nco_var_dfn() */
    if(nco_pck_plc != nco_pck_plc_nil && nco_pck_plc != nco_pck_plc_upk){
      /* ...put file in define mode to allow metadata writing... */
      (void)nco_redef(out_id);
      /* ...loop through all variables that may have been packed... */
      for(idx=0;idx<nbr_var_prc;idx++){

        char *grp_out_fll=NULL; /* [sng] Group name */

        int grp_out_id;    /* [ID] Group ID (output) */
        int var_out_id;    /* [ID] Variable ID (output) */

        trv_sct *var_trv;  /* [sct] Variable GTT object */

        /* Obtain variable GTT object using full variable name */
        var_trv=trv_tbl_var_nm_fll(var_prc[idx]->nm_fll,trv_tbl);

        /* Edit group name for output */
        if(gpe) grp_out_fll=nco_gpe_evl(gpe,var_trv->grp_nm_fll); else grp_out_fll=(char *)strdup(var_trv->grp_nm_fll);

        /* Obtain output group ID */
        (void)nco_inq_grp_full_ncid(out_id,grp_out_fll,&grp_out_id);

        /* Memory management after current extracted group */
        if(grp_out_fll) grp_out_fll=(char *)nco_free(grp_out_fll);

        /* Get variable ID */
        (void)nco_inq_varid(grp_out_id,var_trv->nm,&var_out_id);

        /* nco_var_dfn() pre-defined dummy packing attributes in output file only for "packable" input variables */
        if(nco_pck_plc_typ_get(nco_pck_map,var_prc[idx]->typ_upk,(nc_type *)NULL)){
          /* Verify input variable was newly packed by this operator
            Writing pre-existing (non-re-packed) attributes here would fail because
            nco_pck_dsk_inq() never fills in var->scl_fct.vp and var->add_fst.vp
            Logic is same as in nco_var_dfn() (except var_prc[] instead of var[])
            If operator newly packed this particular variable... */
          if(
            /* ...either because operator newly packs all variables... */
            (nco_pck_plc == nco_pck_plc_all_new_att) ||
            /* ...or because operator newly packs un-packed variables like this one... */
            (nco_pck_plc == nco_pck_plc_all_xst_att && !var_prc[idx]->pck_ram) ||
            /* ...or because operator re-packs packed variables like this one... */
            (nco_pck_plc == nco_pck_plc_xst_new_att && var_prc[idx]->pck_ram)
            ){
            /* Replace dummy packing attributes with final values, or delete them */
            if(nco_dbg_lvl >= nco_dbg_io) (void)fprintf(stderr,"%s: main() replacing dummy packing attribute values for variable %s\n",nco_prg_nm,var_prc[idx]->nm);
            (void)nco_aed_prc(grp_out_id,aed_lst_add_fst[idx].id,aed_lst_add_fst[idx]);
            (void)nco_aed_prc(grp_out_id,aed_lst_scl_fct[idx].id,aed_lst_scl_fct[idx]);
          } /* endif variable is newly packed by this operator */
        } /* !nco_pck_plc_alw */
      } /* end loop over var_prc */

      /* Take output file out of define mode */
      if(hdr_pad == 0UL) (void)nco_enddef(out_id); else (void)nco__enddef(out_id,hdr_pad);

    } /* nco_pck_plc == nco_pck_plc_nil || nco_pck_plc == nco_pck_plc_upk */

    /* Close input netCDF file */
    for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) nco_close(in_id_arr[thr_idx]);

    /* Remove local copy of file */
    if(FL_RTR_RMT_LCN && RM_RMT_FL_PST_PRC) (void)nco_fl_rm(fl_in);

  } /* end loop over fl_idx */

  /* Close output file and move it from temporary to permanent location */
  (void)nco_fl_out_cls(fl_out,fl_out_tmp,out_id);

  /* Clean memory unless dirty memory allowed */
  if(flg_cln){
    /* ncpdq-specific memory cleanup */
    if(dmn_rdr_nbr > 0){
      if(dmn_rdr_nbr_in > 0) dmn_rdr_lst_in=nco_sng_lst_free(dmn_rdr_lst_in,dmn_rdr_nbr_in);
      dmn_rvr_rdr=(nco_bool *)nco_free(dmn_rvr_rdr);
      /* Free dimension list pointers */
      for(idx_rdr=0; idx_rdr<dmn_rdr_nbr_trv; idx_rdr++){
        dmn_rdr_trv[idx_rdr]->nm=(char *)nco_free(dmn_rdr_trv[idx_rdr]->nm);
        dmn_rdr_trv[idx_rdr]->nm_fll=(char *)nco_free(dmn_rdr_trv[idx_rdr]->nm_fll);
        dmn_rdr_trv[idx_rdr]=(dmn_sct *)nco_free(dmn_rdr_trv[idx_rdr]);
      }
      dmn_rdr_trv=(dmn_sct **)nco_free(dmn_rdr_trv);
      /* Dimension structures in dmn_rdr are owned by dmn and dmn_out, free'd later */
    } /* endif dmn_rdr_nbr > 0 */
    if(nco_pck_plc != nco_pck_plc_nil){
      if(nco_pck_plc_sng) nco_pck_plc_sng=(char *)nco_free(nco_pck_plc_sng);
      if(nco_pck_map_sng) nco_pck_map_sng=(char *)nco_free(nco_pck_map_sng);
      if(nco_pck_plc != nco_pck_plc_upk){
        /* No need for loop over var_prc variables to free attribute values
         Variable structures and attribute edit lists share same attribute values
         Free them only once, and do it in nco_var_free() */
        aed_lst_add_fst=(aed_sct *)nco_free(aed_lst_add_fst);
        aed_lst_scl_fct=(aed_sct *)nco_free(aed_lst_scl_fct);
      } /* nco_pck_plc == nco_pck_plc_upk */
    } /* nco_pck_plc == nco_pck_plc_nil */
    /* NCO-generic clean-up */
    /* Free individual strings/arrays */
    if(cmd_ln) cmd_ln=(char *)nco_free(cmd_ln);
    if(cnk_map_sng) cnk_map_sng=(char *)nco_free(cnk_map_sng);
    if(cnk_plc_sng) cnk_plc_sng=(char *)nco_free(cnk_plc_sng);
    if(fl_in) fl_in=(char *)nco_free(fl_in);
    if(fl_out) fl_out=(char *)nco_free(fl_out);
    if(fl_out_tmp) fl_out_tmp=(char *)nco_free(fl_out_tmp);
    if(fl_pth) fl_pth=(char *)nco_free(fl_pth);
    if(fl_pth_lcl) fl_pth_lcl=(char *)nco_free(fl_pth_lcl);
    if(in_id_arr) in_id_arr=(int *)nco_free(in_id_arr);
    /* Free lists of strings */
    if(fl_lst_in && fl_lst_abb == NULL) fl_lst_in=nco_sng_lst_free(fl_lst_in,fl_nbr); 
    if(fl_lst_in && fl_lst_abb) fl_lst_in=nco_sng_lst_free(fl_lst_in,1);
    if(fl_lst_abb) fl_lst_abb=nco_sng_lst_free(fl_lst_abb,abb_arg_nbr);
    if(gaa_nbr > 0) gaa_arg=nco_sng_lst_free(gaa_arg,gaa_nbr);
    if(var_lst_in_nbr > 0) var_lst_in=nco_sng_lst_free(var_lst_in,var_lst_in_nbr);
    /* Free limits */
    for(idx=0;idx<aux_nbr;idx++) aux_arg[idx]=(char *)nco_free(aux_arg[idx]);
    for(idx=0;idx<lmt_nbr;idx++) lmt_arg[idx]=(char *)nco_free(lmt_arg[idx]);
    for(idx=0;idx<ppc_nbr;idx++) ppc_arg[idx]=(char *)nco_free(ppc_arg[idx]);
    /* Free chunking information */
    for(idx=0;idx<cnk_nbr;idx++) cnk_arg[idx]=(char *)nco_free(cnk_arg[idx]);
    if(cnk_nbr > 0) cnk.cnk_dmn=(cnk_dmn_sct **)nco_cnk_lst_free(cnk.cnk_dmn,cnk_nbr);
    if(xtr_nbr > 0) var=nco_var_lst_free(var,xtr_nbr);
    if(xtr_nbr > 0) var_out=nco_var_lst_free(var_out,xtr_nbr);
    var_prc=(var_sct **)nco_free(var_prc);
    var_prc_out=(var_sct **)nco_free(var_prc_out);
    var_fix=(var_sct **)nco_free(var_fix);
    var_fix_out=(var_sct **)nco_free(var_fix_out);
    trv_tbl_free(trv_tbl); 
    for(idx=0;idx<lmt_nbr;idx++) flg_dne[idx].dim_nm=(char *)nco_free(flg_dne[idx].dim_nm);
    if(flg_dne) flg_dne=(nco_dmn_dne_t *)nco_free(flg_dne);
    if(gpe) gpe=(gpe_sct *)nco_gpe_free(gpe);
  } /* !flg_cln */

#ifdef ENABLE_MPI
  MPI_Finalize();
#endif /* !ENABLE_MPI */
  
  /* End timer */ 
  ddra_info.tmr_flg=nco_tmr_end; /* [enm] Timer flag */
  rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
  if(rcd != NC_NOERR) nco_err_exit(rcd,"main");

  nco_exit_gracefully();
  return EXIT_SUCCESS;
} /* end main() */
Пример #6
0
nco_bool 
nco_find_lat_lon_trv
(const int nc_id,                    /* I [ID] netCDF file ID */
 const trv_sct * const var_trv,      /* I [sct] Variable to search for "standard_name" attribute */
 const char * const att_val_trg,     /* I [sng] Attribute value to find ("latitude" or "longitude") */
 char **var_nm_fll,                  /* I/O [sng] Full name of variable that has "latitude" or "longitude" attributes */
 int *dmn_id,                        /* I/O [id] Dimension ID of "latitude" and "longitude" */
 nc_type *crd_typ,                   /* I/O [enm] netCDF type of both "latitude" and "longitude" */
 char units[])                       /* I/O [sng] Units of both "latitude" and "longitude" */
{
  /* Purpose: Find auxiliary coordinate variables that map to latitude/longitude 
     Find variables with standard_name = "latitude" and "longitude"
     Return true if both latitude and longitude standard names are found
     Also return needed information about these auxiliary coordinates
     Assumes that units and types for latitude and longitude are identical
     Caller responsible for memory management for variable names
     Memory for unit strings must be freed by caller */
  
  const char fnc_nm[]="nco_find_lat_lon_trv()";

  char att_nm[NC_MAX_NAME]; /* [sng] Attribute name */
  char var_nm[NC_MAX_NAME];

  int grp_id;               /* [id] Group ID */
  int var_id;               /* [id] Variable ID */
  int var_dimid[NC_MAX_VAR_DIMS]; /* [enm] Dimension ID */
  int var_att_nbr;          /* [nbr] Number of attributes */
  int var_dmn_nbr;          /* [nbr] Number of dimensions */

  nc_type var_typ;          /* [enm] variable type */

  assert(var_trv->nco_typ == nco_obj_typ_var);

  /* Obtain group ID */
  (void)nco_inq_grp_full_ncid(nc_id,var_trv->grp_nm_fll,&grp_id);

  /* Obtain variable ID */
  (void)nco_inq_varid(grp_id,var_trv->nm,&var_id);

  /* Find number of attributes */
  (void)nco_inq_var(grp_id,var_id,var_nm,&var_typ,&var_dmn_nbr,var_dimid,&var_att_nbr);

  assert(var_att_nbr == var_trv->nbr_att);

  for(int idx_att=0;idx_att<var_att_nbr;idx_att++){

    /* Skip attribute if not "standard_name" */
    (void)nco_inq_attname(grp_id,var_id,idx_att,att_nm);
    if(strcmp(att_nm,"standard_name")) continue;

    char att_val[NC_MAX_NAME+1];
    long att_lng;
    (void)nco_inq_attlen(grp_id,var_id,"standard_name",&att_lng);
    (void)NCO_GET_ATT_CHAR(grp_id,var_id,"standard_name",att_val);
    att_val[att_lng]='\0';

    /* Match parameter name to find ("latitude" or "longitude") */
    if(!strcmp(att_val,att_val_trg)){

      /* Assume same units (degrees or radians) for both lat and lon */
      int rcd=nco_inq_attlen_flg(grp_id,var_id,"units",&att_lng);
      if(rcd != NC_NOERR){
        if(nco_dbg_lvl_get() >= nco_dbg_var) (void)fprintf(stdout,"%s: %s reports CF convention requires \"latitude\" to have units attribute\n",nco_prg_nm_get(),fnc_nm);
        return False;
      } /* endif */
      NCO_GET_ATT_CHAR(grp_id,var_id,"units",units);
      units[att_lng]='\0';

      if(var_dmn_nbr > 1) (void)fprintf(stderr,"%s: WARNING %s reports latitude variable %s has %d dimensions. NCO only supports hyperslabbing of auxiliary coordinate variables with a single dimension. Continuing with unpredictable results...\n",nco_prg_nm_get(),fnc_nm,var_nm,var_dmn_nbr);

      /* Copy values to export */
      *var_nm_fll=(char *)strdup(var_trv->nm_fll);
      *crd_typ=var_typ;
      *dmn_id=var_dimid[0];

      return True;
    } /* strcmp() */
  } /* end loop over attributes */

  return False;

} /* end nco_find_lat_lon_trv() */
Пример #7
0
int 
main(int argc,char **argv)
{
  nco_bool CNV_CCM_CCSM_CF;
  nco_bool CMD_LN_NTP_VAR=False; /* Option i */
  nco_bool CMD_LN_NTP_WGT=True; /* Option w */
  nco_bool DO_CONFORM=False; /* Did nco_var_cnf_dmn() find truly conforming variables? */
  nco_bool EXCLUDE_INPUT_LIST=False; /* Option c */
  nco_bool EXTRACT_ALL_COORDINATES=False; /* Option c */
  nco_bool EXTRACT_ASSOCIATED_COORDINATES=True; /* Option C */
  nco_bool FILE_1_RETRIEVED_FROM_REMOTE_LOCATION;
  nco_bool FILE_2_RETRIEVED_FROM_REMOTE_LOCATION;
  nco_bool FIX_REC_CRD=False; /* [flg] Do not interpolate/multiply record coordinate variables */
  nco_bool FL_LST_IN_FROM_STDIN=False; /* [flg] fl_lst_in comes from stdin */
  nco_bool FORCE_APPEND=False; /* Option A */
  nco_bool FORCE_OVERWRITE=False; /* Option O */
  nco_bool FORTRAN_IDX_CNV=False; /* Option F */
  nco_bool GRP_VAR_UNN=False; /* [flg] Select union of specified groups and variables */
  nco_bool HISTORY_APPEND=True; /* Option h */
  nco_bool MSA_USR_RDR=False; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order*/
  nco_bool MUST_CONFORM=False; /* Must nco_var_cnf_dmn() find truly conforming variables? */
  nco_bool RAM_CREATE=False; /* [flg] Create file in RAM */
  nco_bool RAM_OPEN=False; /* [flg] Open (netCDF3-only) file(s) in RAM */
  nco_bool RM_RMT_FL_PST_PRC=True; /* Option R */
  nco_bool WRT_TMP_FL=True; /* [flg] Write output to temporary file */
  nco_bool flg_cln=True; /* [flg] Clean memory prior to exit */

  char **fl_lst_abb=NULL; /* Option a */
  char **fl_lst_in;
  char **ntp_lst_in;
  char **grp_lst_in=NULL_CEWI;
  char **var_lst_in=NULL_CEWI;
  char *aux_arg[NC_MAX_DIMS];
  char *cmd_ln;
  char *cnk_arg[NC_MAX_DIMS];
  char *cnk_map_sng=NULL_CEWI; /* [sng] Chunking map */
  char *cnk_plc_sng=NULL_CEWI; /* [sng] Chunking policy */
  char *fl_in_1=NULL; /* fl_in_1 is nco_realloc'd when not NULL */
  char *fl_in_2=NULL; /* fl_in_2 is nco_realloc'd when not NULL */
  char *fl_out=NULL; /* Option o */
  char *fl_out_tmp;
  char *fl_pth=NULL; /* Option p */
  char *fl_pth_lcl=NULL; /* Option l */
  char *lmt_arg[NC_MAX_DIMS];
  char *ntp_nm=NULL; /* Option i */
  char *opt_crr=NULL; /* [sng] String representation of current long-option name */
  char *optarg_lcl=NULL; /* [sng] Local copy of system optarg */
  char *ppc_arg[NC_MAX_VARS]; /* [sng] PPC arguments */
  char *sng_cnv_rcd=NULL_CEWI; /* [sng] strtol()/strtoul() return code */
  char trv_pth[]="/"; /* [sng] Root path of traversal tree */

  const char * const CVS_Id="$Id$"; 
  const char * const CVS_Revision="$Revision$";
  const char * const opt_sht_lst="3467ACcD:d:Fg:G:hi:L:l:Oo:p:rRt:v:X:xw:-:";

  cnk_sct cnk; /* [sct] Chunking structure */

#if defined(__cplusplus) || defined(PGI_CC)
  ddra_info_sct ddra_info;
  ddra_info.flg_ddra=False;
#else /* !__cplusplus */
  ddra_info_sct ddra_info={.flg_ddra=False};
#endif /* !__cplusplus */

  double ntp_val_out=double_CEWI; /* Option i */
  double wgt_val_1=0.5; /* Option w */
  double wgt_val_2=0.5; /* Option w */

  extern char *optarg;
  extern int optind;

  /* Using naked stdin/stdout/stderr in parallel region generates warning
     Copy appropriate filehandle to variable scoped shared in parallel clause */
  FILE * const fp_stderr=stderr; /* [fl] stderr filehandle CEWI */
  FILE * const fp_stdout=stdout; /* [fl] stdout filehandle CEWI */

  gpe_sct *gpe=NULL; /* [sng] Group Path Editing (GPE) structure */

  int *in_id_1_arr;
  int *in_id_2_arr;

  int abb_arg_nbr=0;
  int aux_nbr=0; /* [nbr] Number of auxiliary coordinate hyperslabs specified */
  int cnk_map=nco_cnk_map_nil; /* [enm] Chunking map */
  int cnk_nbr=0; /* [nbr] Number of chunk sizes */
  int cnk_plc=nco_cnk_plc_nil; /* [enm] Chunking policy */
  int dfl_lvl=NCO_DFL_LVL_UNDEFINED; /* [enm] Deflate level */
  int fl_idx;
  int fl_nbr=0;
  int fl_in_fmt_1; /* [enm] Input file format */
  int fl_in_fmt_2; /* [enm] Input file format */
  int fl_out_fmt=NCO_FORMAT_UNDEFINED; /* [enm] Output file format */
  int fll_md_old; /* [enm] Old fill mode */
  int has_mss_val=False;
  int idx;
  int in_id_1;  
  int in_id_2;  
  int lmt_nbr=0; /* Option d. NB: lmt_nbr gets incremented */
  int md_open; /* [enm] Mode flag for nc_open() call */
  int nbr_dmn_fl;
  int nbr_ntp;
  int nbr_var_fix; /* nbr_var_fix gets incremented */
  int nbr_var_fl;
  int nbr_var_prc; /* nbr_var_prc gets incremented */
  int xtr_nbr=0; /* xtr_nbr won't otherwise be set for -c with no -v */
  int opt;
  int out_id;  
  int ppc_nbr=0; /* [nbr] Number of PPC arguments */
  int rcd=NC_NOERR; /* [rcd] Return code */
  int thr_idx; /* [idx] Index of current thread */
  int thr_nbr=int_CEWI; /* [nbr] Thread number Option t */
  int var_lst_in_nbr=0;
  int grp_lst_in_nbr=0; /* [nbr] Number of groups explicitly specified by user */

  md5_sct *md5=NULL; /* [sct] MD5 configuration */

  size_t bfr_sz_hnt=NC_SIZEHINT_DEFAULT; /* [B] Buffer size hint */
  size_t cnk_min_byt=NCO_CNK_SZ_MIN_BYT_DFL; /* [B] Minimize size of variable to chunk */
  size_t cnk_sz_byt=0UL; /* [B] Chunk size in bytes */
  size_t cnk_sz_scl=0UL; /* [nbr] Chunk size scalar */
  size_t hdr_pad=0UL; /* [B] Pad at end of header section */

  val_unn val_gnr_unn; /* Generic container for arrival point or weight */

  var_sct *wgt_1=NULL_CEWI;
  var_sct *wgt_2=NULL_CEWI;
  var_sct *wgt_out_1=NULL;
  var_sct *wgt_out_2=NULL;
  var_sct **var;
  var_sct **var_fix;
  var_sct **var_fix_out;
  var_sct **var_out;
  var_sct **var_prc_1;
  var_sct **var_prc_2;
  var_sct **var_prc_out;

  trv_tbl_sct *trv_tbl=NULL; /* [lst] Traversal table */

  nco_dmn_dne_t *flg_dne=NULL; /* [lst] Flag to check if input dimension -d "does not exist" */

#ifdef ENABLE_MPI
  /* Declare all MPI-specific variables here */
  MPI_Comm mpi_cmm=MPI_COMM_WORLD; /* [prc] Communicator */
  int prc_rnk; /* [idx] Process rank */
  int prc_nbr=0; /* [nbr] Number of MPI processes */
#endif /* !ENABLE_MPI */
  
  static struct option opt_lng[]=
    { /* Structure ordered by short option key if possible */
      /* Long options with no argument, no short option counterpart */
      {"cln",no_argument,0,0}, /* [flg] Clean memory prior to exit */
      {"clean",no_argument,0,0}, /* [flg] Clean memory prior to exit */
      {"mmr_cln",no_argument,0,0}, /* [flg] Clean memory prior to exit */
      {"drt",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
      {"dirty",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
      {"mmr_drt",no_argument,0,0}, /* [flg] Allow dirty memory on exit */
      {"hdf4",no_argument,0,0}, /* [flg] Treat file as HDF4 */
      {"hdf_upk",no_argument,0,0}, /* [flg] HDF unpack convention: unpacked=scale_factor*(packed-add_offset) */
      {"hdf_unpack",no_argument,0,0}, /* [flg] HDF unpack convention: unpacked=scale_factor*(packed-add_offset) */
      {"msa_usr_rdr",no_argument,0,0}, /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
      {"msa_user_order",no_argument,0,0}, /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
      {"fix_rec_crd",no_argument,0,0}, /* [flg] Do not interpolate/multiply record coordinate variables */
      {"ram_all",no_argument,0,0}, /* [flg] Open (netCDF3) and create file(s) in RAM */
      {"create_ram",no_argument,0,0}, /* [flg] Create file in RAM */
      {"open_ram",no_argument,0,0}, /* [flg] Open (netCDF3) file(s) in RAM */
      {"diskless_all",no_argument,0,0}, /* [flg] Open (netCDF3) and create file(s) in RAM */
      {"wrt_tmp_fl",no_argument,0,0}, /* [flg] Write output to temporary file */
      {"write_tmp_fl",no_argument,0,0}, /* [flg] Write output to temporary file */
      {"no_tmp_fl",no_argument,0,0}, /* [flg] Do not write output to temporary file */
      {"intersection",no_argument,0,0}, /* [flg] Select intersection of specified groups and variables */
      {"nsx",no_argument,0,0}, /* [flg] Select intersection of specified groups and variables */
      {"union",no_argument,0,0}, /* [flg] Select union of specified groups and variables */
      {"unn",no_argument,0,0}, /* [flg] Select union of specified groups and variables */
      {"version",no_argument,0,0},
      {"vrs",no_argument,0,0},
      /* Long options with argument, no short option counterpart */
      {"bfr_sz_hnt",required_argument,0,0}, /* [B] Buffer size hint */
      {"buffer_size_hint",required_argument,0,0}, /* [B] Buffer size hint */
      {"cnk_byt",required_argument,0,0}, /* [B] Chunk size in bytes */
      {"chunk_byte",required_argument,0,0}, /* [B] Chunk size in bytes */
      {"cnk_dmn",required_argument,0,0}, /* [nbr] Chunk size */
      {"chunk_dimension",required_argument,0,0}, /* [nbr] Chunk size */
      {"cnk_map",required_argument,0,0}, /* [nbr] Chunking map */
      {"chunk_map",required_argument,0,0}, /* [nbr] Chunking map */
      {"cnk_min",required_argument,0,0}, /* [B] Minimize size of variable to chunk */
      {"chunk_min",required_argument,0,0}, /* [B] Minimize size of variable to chunk */
      {"cnk_plc",required_argument,0,0}, /* [nbr] Chunking policy */
      {"chunk_policy",required_argument,0,0}, /* [nbr] Chunking policy */
      {"cnk_scl",required_argument,0,0}, /* [nbr] Chunk size scalar */
      {"chunk_scalar",required_argument,0,0}, /* [nbr] Chunk size scalar */
      {"fl_fmt",required_argument,0,0},
      {"file_format",required_argument,0,0},
      {"hdr_pad",required_argument,0,0},
      {"header_pad",required_argument,0,0},
      {"ppc",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
      {"precision_preserving_compression",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
      {"quantize",required_argument,0,0}, /* [nbr] Precision-preserving compression, i.e., number of total or decimal significant digits */
      /* Long options with short counterparts */
      {"3",no_argument,0,'3'},
      {"4",no_argument,0,'4'},
      {"64bit",no_argument,0,'4'},
      {"netcdf4",no_argument,0,'4'},
      {"append",no_argument,0,'A'},
      {"coords",no_argument,0,'c'},
      {"crd",no_argument,0,'c'},
      {"no-coords",no_argument,0,'C'},
      {"no-crd",no_argument,0,'C'},
      {"debug",required_argument,0,'D'},
      {"nco_dbg_lvl",required_argument,0,'D'},
      {"dimension",required_argument,0,'d'},
      {"dmn",required_argument,0,'d'},
      {"fortran",no_argument,0,'F'},
      {"ftn",no_argument,0,'F'},
      {"gpe",required_argument,0,'G'}, /* [sng] Group Path Edit (GPE) */
      {"grp",required_argument,0,'g'},
      {"group",required_argument,0,'g'},
      {"history",no_argument,0,'h'},
      {"hst",no_argument,0,'h'},
      {"interpolate",required_argument,0,'i'},
      {"ntp",required_argument,0,'i'},
      {"dfl_lvl",required_argument,0,'L'}, /* [enm] Deflate level */
      {"deflate",required_argument,0,'L'}, /* [enm] Deflate level */
      {"local",required_argument,0,'l'},
      {"lcl",required_argument,0,'l'},
      {"overwrite",no_argument,0,'O'},
      {"ovr",no_argument,0,'O'},
      {"output",required_argument,0,'o'},
      {"fl_out",required_argument,0,'o'},
      {"path",required_argument,0,'p'},
      {"retain",no_argument,0,'R'},
      {"rtn",no_argument,0,'R'},
      {"revision",no_argument,0,'r'},
      {"thr_nbr",required_argument,0,'t'},
      {"threads",required_argument,0,'t'},
      {"omp_num_threads",required_argument,0,'t'},
      {"variable",required_argument,0,'v'},
      {"weight",required_argument,0,'w'},
      {"wgt_var",no_argument,0,'w'},
      {"auxiliary",required_argument,0,'X'},
      {"exclude",no_argument,0,'x'},
      {"xcl",no_argument,0,'x'},
      {"help",no_argument,0,'?'},
      {"hlp",no_argument,0,'?'},
      {0,0,0,0}
    }; /* end opt_lng */
  int opt_idx=0; /* Index of current long option into opt_lng array */
  
  /* Start timer and save command line */ 
  ddra_info.tmr_flg=nco_tmr_srt;
  rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
  ddra_info.tmr_flg=nco_tmr_mtd;
  cmd_ln=nco_cmd_ln_sng(argc,argv);

  /* Get program name and set program enum (e.g., nco_prg_id=ncra) */
  nco_prg_nm=nco_prg_prs(argv[0],&nco_prg_id);

#ifdef ENABLE_MPI
  /* MPI Initialization */
  if(False) (void)fprintf(stdout,gettext("%s: WARNING Compiled with MPI\n"),nco_prg_nm);
  MPI_Init(&argc,&argv);
  MPI_Comm_size(mpi_cmm,&prc_nbr);
  MPI_Comm_rank(mpi_cmm,&prc_rnk);
#endif /* !ENABLE_MPI */
  
  /* Parse command line arguments */
  while(1){
    /* getopt_long_only() allows one dash to prefix long options */
    opt=getopt_long(argc,argv,opt_sht_lst,opt_lng,&opt_idx);
    /* NB: access to opt_crr is only valid when long_opt is detected */
    if(opt == EOF) break; /* Parse positional arguments once getopt_long() returns EOF */
    opt_crr=(char *)strdup(opt_lng[opt_idx].name);

    /* Process long options without short option counterparts */
    if(opt == 0){
      if(!strcmp(opt_crr,"bfr_sz_hnt") || !strcmp(opt_crr,"buffer_size_hint")){
        bfr_sz_hnt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_byt") || !strcmp(opt_crr,"chunk_byte")){
        cnk_sz_byt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk_byt */
      if(!strcmp(opt_crr,"cnk_min") || !strcmp(opt_crr,"chunk_min")){
        cnk_min_byt=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk_min */
      if(!strcmp(opt_crr,"cnk_dmn") || !strcmp(opt_crr,"chunk_dimension")){
        /* Copy limit argument for later processing */
        cnk_arg[cnk_nbr]=(char *)strdup(optarg);
        cnk_nbr++;
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_scl") || !strcmp(opt_crr,"chunk_scalar")){
        cnk_sz_scl=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_map") || !strcmp(opt_crr,"chunk_map")){
        /* Chunking map */
        cnk_map_sng=(char *)strdup(optarg);
        cnk_map=nco_cnk_map_get(cnk_map_sng);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cnk_plc") || !strcmp(opt_crr,"chunk_policy")){
        /* Chunking policy */
        cnk_plc_sng=(char *)strdup(optarg);
        cnk_plc=nco_cnk_plc_get(cnk_plc_sng);
      } /* endif cnk */
      if(!strcmp(opt_crr,"cln") || !strcmp(opt_crr,"mmr_cln") || !strcmp(opt_crr,"clean")) flg_cln=True; /* [flg] Clean memory prior to exit */
      if(!strcmp(opt_crr,"drt") || !strcmp(opt_crr,"mmr_drt") || !strcmp(opt_crr,"dirty")) flg_cln=False; /* [flg] Clean memory prior to exit */
      if(!strcmp(opt_crr,"fix_rec_crd")) FIX_REC_CRD=True; /* [flg] Do not interpolate/multiply record coordinate variables */
      if(!strcmp(opt_crr,"fl_fmt") || !strcmp(opt_crr,"file_format")) rcd=nco_create_mode_prs(optarg,&fl_out_fmt);
      if(!strcmp(opt_crr,"hdf4")) nco_fmt_xtn=nco_fmt_xtn_hdf4; /* [enm] Treat file as HDF4 */
      if(!strcmp(opt_crr,"hdf_upk") || !strcmp(opt_crr,"hdf_unpack")) nco_upk_cnv=nco_upk_HDF; /* [flg] HDF unpack convention: unpacked=scale_factor*(packed-add_offset) */
      if(!strcmp(opt_crr,"hdr_pad") || !strcmp(opt_crr,"header_pad")){
        hdr_pad=strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
        if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      } /* endif "hdr_pad" */
      if(!strcmp(opt_crr,"msa_usr_rdr") || !strcmp(opt_crr,"msa_user_order")) MSA_USR_RDR=True; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */
      if(!strcmp(opt_crr,"ppc") || !strcmp(opt_crr,"precision_preserving_compression") || !strcmp(opt_crr,"quantize")){
        ppc_arg[ppc_nbr]=(char *)strdup(optarg);
        ppc_nbr++;
      } /* endif "ppc" */
      if(!strcmp(opt_crr,"ram_all") || !strcmp(opt_crr,"create_ram") || !strcmp(opt_crr,"diskless_all")) RAM_CREATE=True; /* [flg] Open (netCDF3) file(s) in RAM */
      if(!strcmp(opt_crr,"ram_all") || !strcmp(opt_crr,"open_ram") || !strcmp(opt_crr,"diskless_all")) RAM_OPEN=True; /* [flg] Create file in RAM */
      if(!strcmp(opt_crr,"unn") || !strcmp(opt_crr,"union")) GRP_VAR_UNN=True;
      if(!strcmp(opt_crr,"nsx") || !strcmp(opt_crr,"intersection")) GRP_VAR_UNN=False;
      if(!strcmp(opt_crr,"vrs") || !strcmp(opt_crr,"version")){
        (void)nco_vrs_prn(CVS_Id,CVS_Revision);
        nco_exit(EXIT_SUCCESS);
      } /* endif "vrs" */
      if(!strcmp(opt_crr,"wrt_tmp_fl") || !strcmp(opt_crr,"write_tmp_fl")) WRT_TMP_FL=True;
      if(!strcmp(opt_crr,"no_tmp_fl")) WRT_TMP_FL=False;
    } /* opt != 0 */
    /* Process short options */
    switch(opt){
    case 0: /* Long options have already been processed, return */
      break;
    case '3': /* Request netCDF3 output storage format */
      fl_out_fmt=NC_FORMAT_CLASSIC;
      break;
    case '4': /* Catch-all to prescribe output storage format */
      if(!strcmp(opt_crr,"64bit")) fl_out_fmt=NC_FORMAT_64BIT; else fl_out_fmt=NC_FORMAT_NETCDF4; 
      break;
    case '6': /* Request netCDF3 64-bit offset output storage format */
      fl_out_fmt=NC_FORMAT_64BIT;
      break;
    case '7': /* Request netCDF4-classic output storage format */
      fl_out_fmt=NC_FORMAT_NETCDF4_CLASSIC;
      break;
    case 'A': /* Toggle FORCE_APPEND */
      FORCE_APPEND=!FORCE_APPEND;
      break;
    case 'C': /* Extract all coordinates associated with extracted variables? */
      EXTRACT_ASSOCIATED_COORDINATES=False;
      break;
    case 'c':
      EXTRACT_ALL_COORDINATES=True;
      break;
    case 'D': /* The debugging level. Default is 0. */
      nco_dbg_lvl=(unsigned short int)strtoul(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtoul",sng_cnv_rcd);
      nc_set_log_level(nco_dbg_lvl);
      break;
    case 'd': /* Copy limit argument for later processing */
      lmt_arg[lmt_nbr]=(char *)strdup(optarg);
      lmt_nbr++;
      break;
    case 'F': /* Toggle index convention. Default is 0-based arrays (C-style). */
      FORTRAN_IDX_CNV=!FORTRAN_IDX_CNV;
      break;
    case 'G': /* Apply Group Path Editing (GPE) to output group */
      /* NB: GNU getopt() optional argument syntax is ugly (requires "=" sign) so avoid it
      http://stackoverflow.com/questions/1052746/getopt-does-not-parse-optional-arguments-to-parameters */
      gpe=nco_gpe_prs_arg(optarg);
      fl_out_fmt=NC_FORMAT_NETCDF4; 
      break;
    case 'g': /* Copy group argument for later processing */
      /* Replace commas with hashes when within braces (convert back later) */
      optarg_lcl=(char *)strdup(optarg);
      (void)nco_rx_comma2hash(optarg_lcl);
      grp_lst_in=nco_lst_prs_2D(optarg_lcl,",",&grp_lst_in_nbr);
      optarg_lcl=(char *)nco_free(optarg_lcl);
      break;
    case 'h': /* Toggle appending to history global attribute */
      HISTORY_APPEND=!HISTORY_APPEND;
      break;
    case 'i':
      /* Name of variable to guide interpolation. Default is none */
      ntp_lst_in=nco_lst_prs_2D(optarg,",",&nbr_ntp);
      if(nbr_ntp > 2){
        (void)fprintf(stdout,"%s: ERROR too many arguments to -i\n",nco_prg_nm_get());
        nco_exit(EXIT_FAILURE);
      } /* end if */
      ntp_nm=ntp_lst_in[0];
      ntp_val_out=strtod(ntp_lst_in[1],&sng_cnv_rcd);
      if(*sng_cnv_rcd) nco_sng_cnv_err(ntp_lst_in[1],"strtod",sng_cnv_rcd);
      CMD_LN_NTP_VAR=True;
      CMD_LN_NTP_WGT=False;
      break;
    case 'L': /* [enm] Deflate level. Default is 0. */
      dfl_lvl=(int)strtol(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtol",sng_cnv_rcd);
      break;
    case 'l': /* Local path prefix for files retrieved from remote file system */
      fl_pth_lcl=(char *)strdup(optarg);
      break;
    case 'O': /* Toggle FORCE_OVERWRITE */
      FORCE_OVERWRITE=!FORCE_OVERWRITE;
      break;
    case 'o': /* Name of output file */
      fl_out=(char *)strdup(optarg);
      break;
    case 'p': /* Common file path */
      fl_pth=(char *)strdup(optarg);
      break;
    case 'R': /* Toggle removal of remotely-retrieved-files. Default is True. */
      RM_RMT_FL_PST_PRC=!RM_RMT_FL_PST_PRC;
      break;
    case 'r': /* Print CVS program information and copyright notice */
      (void)nco_vrs_prn(CVS_Id,CVS_Revision);
      (void)nco_lbr_vrs_prn();
      (void)nco_cpy_prn();
      (void)nco_cnf_prn();
      nco_exit(EXIT_SUCCESS);
      break;
    case 't': /* Thread number */
      thr_nbr=(int)strtol(optarg,&sng_cnv_rcd,NCO_SNG_CNV_BASE10);
      if(*sng_cnv_rcd) nco_sng_cnv_err(optarg,"strtol",sng_cnv_rcd);
      break;
    case 'v': /* Variables to extract/exclude */
      /* Replace commas with hashes when within braces (convert back later) */
      optarg_lcl=(char *)strdup(optarg);
      (void)nco_rx_comma2hash(optarg_lcl);
      var_lst_in=nco_lst_prs_2D(optarg_lcl,",",&var_lst_in_nbr);
      optarg_lcl=(char *)nco_free(optarg_lcl);
      xtr_nbr=var_lst_in_nbr;
      break;
    case 'w':
      /* Weight(s) for interpolation.  Default is wgt_val_1=wgt_val_2=0.5 */
      ntp_lst_in=nco_lst_prs_2D(optarg,",",&nbr_ntp);
      if(nbr_ntp > 2){
        (void)fprintf(stdout,"%s: ERROR too many arguments to -w\n",nco_prg_nm_get());
        nco_exit(EXIT_FAILURE);
      }else if(nbr_ntp == 2){
        wgt_val_1=strtod(ntp_lst_in[0],&sng_cnv_rcd);
        if(*sng_cnv_rcd) nco_sng_cnv_err(ntp_lst_in[0],"strtod",sng_cnv_rcd);
        wgt_val_2=strtod(ntp_lst_in[1],&sng_cnv_rcd);
        if(*sng_cnv_rcd) nco_sng_cnv_err(ntp_lst_in[1],"strtod",sng_cnv_rcd);
      }else if(nbr_ntp == 1){
        wgt_val_1=strtod(ntp_lst_in[0],&sng_cnv_rcd);
        if(*sng_cnv_rcd) nco_sng_cnv_err(ntp_lst_in[0],"strtod",sng_cnv_rcd);
        wgt_val_2=1.0-wgt_val_1;
      } /* end else */
      CMD_LN_NTP_WGT=True;
      break;
    case 'X': /* Copy auxiliary coordinate argument for later processing */
      aux_arg[aux_nbr]=(char *)strdup(optarg);
      aux_nbr++;
      MSA_USR_RDR=True; /* [flg] Multi-Slab Algorithm returns hyperslabs in user-specified order */      
      break;
    case 'x': /* Exclude rather than extract variables specified with -v */
      EXCLUDE_INPUT_LIST=True;
      break;
    case '?': /* Print proper usage */
      (void)nco_usg_prn();
      nco_exit(EXIT_SUCCESS);
      break;
    case '-': /* Long options are not allowed */
      (void)fprintf(stderr,"%s: ERROR Long options are not available in this build. Use single letter options instead.\n",nco_prg_nm_get());
      nco_exit(EXIT_FAILURE);
      break;
    default: /* Print proper usage */
      (void)fprintf(stdout,"%s ERROR in command-line syntax/options. Please reformulate command accordingly.\n",nco_prg_nm_get());
      (void)nco_usg_prn();
      nco_exit(EXIT_FAILURE);
      break;
    } /* end switch */
    if(opt_crr) opt_crr=(char *)nco_free(opt_crr);
  } /* end while loop */

  if(CMD_LN_NTP_VAR && CMD_LN_NTP_WGT){
    (void)fprintf(stdout,"%s: ERROR interpolating variable (-i) and fixed weight(s) (-w) both set\n",nco_prg_nm_get());
    nco_exit(EXIT_FAILURE);
  }else if(!CMD_LN_NTP_VAR && !CMD_LN_NTP_WGT){
    (void)fprintf(stdout,"%s: ERROR interpolating variable (-i) or fixed weight(s) (-w) must be set\n",nco_prg_nm_get());
    nco_exit(EXIT_FAILURE);
  } /* end else */

  /* Process positional arguments and fill in filenames */
  fl_lst_in=nco_fl_lst_mk(argv,argc,optind,&fl_nbr,&fl_out,&FL_LST_IN_FROM_STDIN);

  /* Initialize thread information */
  thr_nbr=nco_openmp_ini(thr_nbr);
  in_id_1_arr=(int *)nco_malloc(thr_nbr*sizeof(int));
  in_id_2_arr=(int *)nco_malloc(thr_nbr*sizeof(int));

  /* Parse filenames */
  fl_idx=0; /* Input file _1 */
  fl_in_1=nco_fl_nm_prs(fl_in_1,fl_idx,&fl_nbr,fl_lst_in,abb_arg_nbr,fl_lst_abb,fl_pth);
  if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"%s: INFO Input file %d is %s",nco_prg_nm_get(),fl_idx,fl_in_1);
  /* Make sure file is on local system and is readable or die trying */
  fl_in_1=nco_fl_mk_lcl(fl_in_1,fl_pth_lcl,&FILE_1_RETRIEVED_FROM_REMOTE_LOCATION);
  if(nco_dbg_lvl >= nco_dbg_fl && FILE_1_RETRIEVED_FROM_REMOTE_LOCATION) (void)fprintf(stderr,", local file is %s",fl_in_1);
  if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"\n");
  /* Open file once per thread to improve caching */
  if(RAM_OPEN) md_open=NC_NOWRITE|NC_DISKLESS; else md_open=NC_NOWRITE;
  for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) rcd+=nco_fl_open(fl_in_1,md_open,&bfr_sz_hnt,in_id_1_arr+thr_idx);
  in_id_1=in_id_1_arr[0];

  fl_idx=1; /* Input file _2 */
  fl_in_2=nco_fl_nm_prs(fl_in_2,fl_idx,&fl_nbr,fl_lst_in,abb_arg_nbr,fl_lst_abb,fl_pth);
  if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"%s: INFO Input file %d is %s",nco_prg_nm_get(),fl_idx,fl_in_2);
  /* Make sure file is on local system and is readable or die trying */
  fl_in_2=nco_fl_mk_lcl(fl_in_2,fl_pth_lcl,&FILE_2_RETRIEVED_FROM_REMOTE_LOCATION);
  if(nco_dbg_lvl >= nco_dbg_fl && FILE_2_RETRIEVED_FROM_REMOTE_LOCATION) (void)fprintf(stderr,", local file is %s",fl_in_2);
  if(nco_dbg_lvl >= nco_dbg_fl) (void)fprintf(stderr,"\n");
  /* Open file once per thread to improve caching */
  if(RAM_OPEN) md_open=NC_NOWRITE|NC_DISKLESS; else md_open=NC_NOWRITE;
  for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) rcd+=nco_fl_open(fl_in_2,md_open,&bfr_sz_hnt,in_id_2_arr+thr_idx);
  in_id_2=in_id_2_arr[0];

  (void)nco_inq_format(in_id_1,&fl_in_fmt_1);
  (void)nco_inq_format(in_id_2,&fl_in_fmt_2);
 
  trv_tbl_init(&trv_tbl);

  /* Construct GTT, Group Traversal Table (groups,variables,dimensions, limits) */
  (void)nco_bld_trv_tbl(in_id_1,trv_pth,lmt_nbr,lmt_arg,aux_nbr,aux_arg,MSA_USR_RDR,FORTRAN_IDX_CNV,grp_lst_in,grp_lst_in_nbr,var_lst_in,xtr_nbr,EXTRACT_ALL_COORDINATES,GRP_VAR_UNN,False,EXCLUDE_INPUT_LIST,EXTRACT_ASSOCIATED_COORDINATES,nco_pck_plc_nil,&flg_dne,trv_tbl);

  /* Were all user-specified dimensions found? */ 
  (void)nco_chk_dmn(lmt_nbr,flg_dne);     

  /* Get number of variables, dimensions, and global attributes in file, file format */
  (void)trv_tbl_inq((int *)NULL,(int *)NULL,(int *)NULL,&nbr_dmn_fl,(int *)NULL,(int *)NULL,(int *)NULL,(int *)NULL,&nbr_var_fl,trv_tbl);

  /* Fill-in variable structure list for all extracted variables */
  var=nco_fll_var_trv(in_id_1,&xtr_nbr,trv_tbl);

  var_out=(var_sct **)nco_malloc(xtr_nbr*sizeof(var_sct *));
  for(int var_idx=0;var_idx<xtr_nbr;var_idx++)
    var_out[var_idx]=nco_var_dpl(var[var_idx]);

  /* Is this a CCM/CCSM/CF-format history tape? */
  CNV_CCM_CCSM_CF=nco_cnv_ccm_ccsm_cf_inq(in_id_1);

  /* Divide variable lists into lists of fixed variables and variables to be processed */
  (void)nco_var_lst_dvd(var,var_out,xtr_nbr,CNV_CCM_CCSM_CF,FIX_REC_CRD,nco_pck_plc_nil,nco_pck_map_nil,(dmn_sct **)NULL,0,&var_fix,&var_fix_out,&nbr_var_fix,&var_prc_1,&var_prc_out,&nbr_var_prc,trv_tbl);

  /* Store processed and fixed variables info into GTT */
  (void)nco_var_prc_fix_trv(nbr_var_prc,var_prc_1,nbr_var_fix,var_fix,trv_tbl);

  /* Make output and input files consanguinous */
  if(fl_out_fmt == NCO_FORMAT_UNDEFINED) fl_out_fmt=fl_in_fmt_1;

  /* Initialize, decode, and set PPC information */
  if(ppc_nbr > 0) nco_ppc_ini(in_id_1,&dfl_lvl,fl_out_fmt,ppc_arg,ppc_nbr,trv_tbl);

  /* Verify output file format supports requested actions */
  (void)nco_fl_fmt_vet(fl_out_fmt,cnk_nbr,dfl_lvl);

  /* Open output file */
  fl_out_tmp=nco_fl_out_open(fl_out,FORCE_APPEND,FORCE_OVERWRITE,fl_out_fmt,&bfr_sz_hnt,RAM_CREATE,RAM_OPEN,WRT_TMP_FL,&out_id);

  /* Initialize chunking from user-specified inputs */
  if(fl_out_fmt == NC_FORMAT_NETCDF4 || fl_out_fmt == NC_FORMAT_NETCDF4_CLASSIC) rcd+=nco_cnk_ini(in_id_1,fl_out,cnk_arg,cnk_nbr,cnk_map,cnk_plc,cnk_min_byt,cnk_sz_byt,cnk_sz_scl,&cnk);

  /* Transfer variable type to table. NOTE: Using var/xtr_nbr containing all variables (processed, fixed) */
  (void)nco_var_typ_trv(xtr_nbr,var,trv_tbl);         

  /* Define dimensions, extracted groups, variables, and attributes in output file */
  (void)nco_xtr_dfn(in_id_1,out_id,&cnk,dfl_lvl,gpe,md5,!FORCE_APPEND,True,False,nco_pck_plc_nil,(char *)NULL,trv_tbl);

  /* Catenate time-stamped command line to "history" global attribute */
  if(HISTORY_APPEND) (void)nco_hst_att_cat(out_id,cmd_ln);
  if(HISTORY_APPEND && FORCE_APPEND) (void)nco_prv_att_cat(fl_in_1,in_id_1,out_id);
  if(HISTORY_APPEND) (void)nco_vrs_att_cat(out_id);
  if(thr_nbr > 0 && HISTORY_APPEND) (void)nco_thr_att_cat(out_id,thr_nbr);

  /* Turn off default filling behavior to enhance efficiency */
  nco_set_fill(out_id,NC_NOFILL,&fll_md_old);

  /* Take output file out of define mode */
  if(hdr_pad == 0UL){
    (void)nco_enddef(out_id);
  }else{
    (void)nco__enddef(out_id,hdr_pad);
    if(nco_dbg_lvl >= nco_dbg_scl) (void)fprintf(stderr,"%s: INFO Padding header with %lu extra bytes\n",nco_prg_nm_get(),(unsigned long)hdr_pad);
  } /* hdr_pad */

  /* Assign zero to start and unity to stride vectors in output variables */
  (void)nco_var_srd_srt_set(var_out,xtr_nbr);

  /* Copy variable data for non-processed variables */
  (void)nco_cpy_fix_var_trv(in_id_1,out_id,gpe,trv_tbl);  

  /* Perform various error-checks on input file */
  if(False) (void)nco_fl_cmp_err_chk();

  /* ncflint-specific stuff: */
  /* Find the weighting variable in input file */
  if(CMD_LN_NTP_VAR){
    var_sct *ntp_1=NULL;
    var_sct *ntp_2=NULL;
    var_sct *ntp_var_out;

    /* Turn arrival point into pseudo-variable */
    val_gnr_unn.d=ntp_val_out; /* Generic container for arrival point or weight */
    ntp_var_out=scl_mk_var(val_gnr_unn,NC_DOUBLE);

    int xtr_nbr_ntp_1;
    int xtr_nbr_ntp_2;

    var_sct ** var_ntp_1;
    var_sct ** var_ntp_2; 

    /* Fill-in variable structure list for all variables named "ntp_nm" NOTE: using table from file 1 */
    var_ntp_1=nco_var_trv(in_id_1,ntp_nm,&xtr_nbr_ntp_1,trv_tbl);
    var_ntp_2=nco_var_trv(in_id_2,ntp_nm,&xtr_nbr_ntp_2,trv_tbl);

    if (xtr_nbr_ntp_1) ntp_1=var_ntp_1[0];
    if (xtr_nbr_ntp_2) ntp_2=var_ntp_2[0];

    if(!xtr_nbr_ntp_1 || !xtr_nbr_ntp_2){
      (void)fprintf(fp_stdout,"%s: ERROR Variable %s is not present in input file. ncflint assumes same file structure for both input files\n",nco_prg_nm_get(),ntp_nm);
      nco_exit(EXIT_FAILURE);
    } /* endif */
    
    /* Read */
    (void)nco_msa_var_get_trv(in_id_1,ntp_1,trv_tbl);
    (void)nco_msa_var_get_trv(in_id_2,ntp_2,trv_tbl);

    /* Currently, only support scalar variables */
    if(ntp_1->sz > 1 || ntp_2->sz > 1){
      (void)fprintf(stdout,"%s: ERROR interpolation variable %s must be scalar\n",nco_prg_nm_get(),ntp_nm);
      nco_exit(EXIT_FAILURE);
    } /* end if */

    /* Weights must be NC_DOUBLE */
    ntp_1=nco_var_cnf_typ((nc_type)NC_DOUBLE,ntp_1);
    ntp_2=nco_var_cnf_typ((nc_type)NC_DOUBLE,ntp_2);

    /* Check for degenerate case */
    if(ntp_1->val.dp[0] == ntp_2->val.dp[0]){
      (void)fprintf(stdout,"%s: ERROR Interpolation variable %s is identical (%g) in input files, therefore unable to interpolate.\n",nco_prg_nm_get(),ntp_nm,ntp_1->val.dp[0]);
      nco_exit(EXIT_FAILURE);
    } /* end if */

    /* Turn weights into pseudo-variables */
    wgt_1=nco_var_dpl(ntp_2);
    wgt_2=nco_var_dpl(ntp_var_out);

    /* Subtract to find interpolation distances */
    (void)nco_var_sbt(ntp_1->type,ntp_1->sz,ntp_1->has_mss_val,ntp_1->mss_val,ntp_var_out->val,wgt_1->val);
    (void)nco_var_sbt(ntp_1->type,ntp_1->sz,ntp_1->has_mss_val,ntp_1->mss_val,ntp_1->val,wgt_2->val);
    (void)nco_var_sbt(ntp_1->type,ntp_1->sz,ntp_1->has_mss_val,ntp_1->mss_val,ntp_1->val,ntp_2->val);

    /* Normalize to obtain final interpolation weights */
    (void)nco_var_dvd(wgt_1->type,wgt_1->sz,wgt_1->has_mss_val,wgt_1->mss_val,ntp_2->val,wgt_1->val);
    (void)nco_var_dvd(wgt_2->type,wgt_2->sz,wgt_2->has_mss_val,wgt_2->mss_val,ntp_2->val,wgt_2->val);

    for(idx=0;idx<xtr_nbr_ntp_1;idx++) var_ntp_1[idx]=nco_var_free(var_ntp_1[idx]);
    for(idx=0;idx<xtr_nbr_ntp_2;idx++) var_ntp_2[idx]=nco_var_free(var_ntp_2[idx]);
    var_ntp_1=(var_sct **)nco_free(var_ntp_1);
    var_ntp_2=(var_sct **)nco_free(var_ntp_2);

    if(ntp_var_out) ntp_var_out=nco_var_free(ntp_var_out);
  } /* end if CMD_LN_NTP_VAR */

  if(CMD_LN_NTP_WGT){
    val_gnr_unn.d=wgt_val_1; /* Generic container for arrival point or weight */
    wgt_1=scl_mk_var(val_gnr_unn,NC_DOUBLE);
    val_gnr_unn.d=wgt_val_2; /* Generic container for arrival point or weight */
    wgt_2=scl_mk_var(val_gnr_unn,NC_DOUBLE);
  } /* end if CMD_LN_NTP_WGT */

  if(nco_dbg_lvl >= nco_dbg_scl) (void)fprintf(stderr,"wgt_1 = %g, wgt_2 = %g\n",wgt_1->val.dp[0],wgt_2->val.dp[0]);

  /* Create structure list for second file */
  var_prc_2=(var_sct **)nco_malloc(nbr_var_prc*sizeof(var_sct *));

  /* Timestamp end of metadata setup and disk layout */
  rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
  ddra_info.tmr_flg=nco_tmr_rgl;

  /* Loop over each interpolated variable */
#ifdef _OPENMP
  /* OpenMP notes:
     shared(): msk and wgt are not altered within loop
     private(): wgt_avg does not need initialization */
# pragma omp parallel for default(none) firstprivate(wgt_1,wgt_2,wgt_out_1,wgt_out_2) private(DO_CONFORM,idx,in_id_1,in_id_2,has_mss_val) shared(MUST_CONFORM,nco_dbg_lvl,fl_in_1,fl_in_2,fl_out,gpe,in_id_1_arr,in_id_2_arr,nbr_var_prc,out_id,nco_prg_nm,var_prc_1,var_prc_2,var_prc_out,nbr_dmn_fl,trv_tbl)
#endif /* !_OPENMP */
  for(idx=0;idx<nbr_var_prc;idx++){
    
    /* Note: Using object 2 from table 1, only one table built, assumes same structure for processed objects in both files */

    char *grp_out_fll=NULL; /* [sng] Group name */

    int grp_id_1;      /* [ID] Group ID */
    int grp_id_2;      /* [ID] Group ID */
    int grp_out_id;    /* [ID] Group ID (output) */
    int var_out_id;    /* [ID] Variable ID (output) */

    trv_sct *var_trv_1;/* [sct] Variable GTT object */
    trv_sct *var_trv_2;/* [sct] Variable GTT object */

    if(nco_dbg_lvl >= nco_dbg_var) (void)fprintf(fp_stderr,"%s, ",var_prc_1[idx]->nm);
    if(nco_dbg_lvl >= nco_dbg_var) (void)fflush(fp_stderr);

    in_id_1=in_id_1_arr[omp_get_thread_num()];
    in_id_2=in_id_2_arr[omp_get_thread_num()];

    var_prc_2[idx]=nco_var_dpl(var_prc_1[idx]);

    /* Obtain variable GTT object using full variable name */
    var_trv_1=trv_tbl_var_nm_fll(var_prc_1[idx]->nm_fll,trv_tbl);
    var_trv_2=trv_tbl_var_nm_fll(var_prc_2[idx]->nm_fll,trv_tbl);

    if(!var_trv_2){
      (void)fprintf(fp_stdout,"%s: ERROR Variable %s is not present in second input file. ncflint assumes same structure for processed objects in both files\n",nco_prg_nm_get(),var_trv_1->nm_fll);
      nco_exit(EXIT_FAILURE);
    } /* endif */

    /* Obtain group ID */
    (void)nco_inq_grp_full_ncid(in_id_1,var_trv_1->grp_nm_fll,&grp_id_1);
    (void)nco_inq_grp_full_ncid(in_id_2,var_trv_2->grp_nm_fll,&grp_id_2);

    (void)nco_var_mtd_refresh(grp_id_2,var_prc_2[idx]);

    /* Read */
    (void)nco_msa_var_get_trv(in_id_1,var_prc_1[idx],trv_tbl);
    (void)nco_msa_var_get_trv(in_id_2,var_prc_2[idx],trv_tbl);

    /* Set var_prc_1 and var_prc_2 to correct size */
    var_prc_1[idx]->sz=var_prc_out[idx]->sz;       
    var_prc_2[idx]->sz=var_prc_out[idx]->sz;  

    /* Stretch second variable to match dimensions of first variable */
    wgt_out_1=nco_var_cnf_dmn(var_prc_out[idx],wgt_1,wgt_out_1,MUST_CONFORM,&DO_CONFORM);
    wgt_out_2=nco_var_cnf_dmn(var_prc_out[idx],wgt_2,wgt_out_2,MUST_CONFORM,&DO_CONFORM);

    var_prc_1[idx]=nco_var_cnf_typ((nc_type)NC_DOUBLE,var_prc_1[idx]);
    var_prc_2[idx]=nco_var_cnf_typ((nc_type)NC_DOUBLE,var_prc_2[idx]);

    /* Allocate and, if necesssary, initialize space for processed variable */
    var_prc_out[idx]->sz=var_prc_1[idx]->sz;

    /* NB: must not try to free() same tally buffer twice */
    /* var_prc_out[idx]->tally=var_prc_1[idx]->tally=(long *)nco_malloc(var_prc_out[idx]->sz*sizeof(long int));*/
    var_prc_out[idx]->tally=(long *)nco_malloc(var_prc_out[idx]->sz*sizeof(long int));
    (void)nco_zero_long(var_prc_out[idx]->sz,var_prc_out[idx]->tally);

    /* Weight variable by taking product of weight with variable */
    (void)nco_var_mlt(var_prc_1[idx]->type,var_prc_1[idx]->sz,var_prc_1[idx]->has_mss_val,var_prc_1[idx]->mss_val,wgt_out_1->val,var_prc_1[idx]->val);
    (void)nco_var_mlt(var_prc_2[idx]->type,var_prc_2[idx]->sz,var_prc_2[idx]->has_mss_val,var_prc_2[idx]->mss_val,wgt_out_2->val,var_prc_2[idx]->val);

    /* Change missing_value of var_prc_2, if any, to missing_value of var_prc_1, if any */
    has_mss_val=nco_mss_val_cnf(var_prc_1[idx],var_prc_2[idx]);

    /* NB: fxm: use tally to determine when to "unweight" answer? TODO */
    (void)nco_var_add_tll_ncflint(var_prc_1[idx]->type,var_prc_1[idx]->sz,has_mss_val,var_prc_1[idx]->mss_val,var_prc_out[idx]->tally,var_prc_1[idx]->val,var_prc_2[idx]->val);

    /* Re-cast output variable to original type */
    var_prc_2[idx]=nco_var_cnf_typ(var_prc_out[idx]->type,var_prc_2[idx]);

    /* Edit group name for output */
    if(gpe) grp_out_fll=nco_gpe_evl(gpe,var_trv_1->grp_nm_fll); else grp_out_fll=(char *)strdup(var_trv_1->grp_nm_fll);

    /* Obtain output group ID */
    (void)nco_inq_grp_full_ncid(out_id,grp_out_fll,&grp_out_id);

    /* Memory management after current extracted group */
    if(grp_out_fll) grp_out_fll=(char *)nco_free(grp_out_fll);

    /* Get variable ID */
    (void)nco_inq_varid(grp_out_id,var_trv_1->nm,&var_out_id);

    /* Store the output variable ID */
    var_prc_out[idx]->id=var_out_id;

    if(var_trv_1->ppc != NC_MAX_INT){
    if(var_trv_1->flg_nsd) (void)nco_ppc_bitmask(var_trv_1->ppc,var_prc_2[idx]->type,var_prc_out[idx]->sz,var_prc_out[idx]->has_mss_val,var_prc_out[idx]->mss_val,var_prc_2[idx]->val); else (void)nco_ppc_around(var_trv_1->ppc,var_prc_2[idx]->type,var_prc_out[idx]->sz,var_prc_out[idx]->has_mss_val,var_prc_out[idx]->mss_val,var_prc_2[idx]->val);
    } /* endif ppc */
    if(nco_is_xcp(var_trv_1->nm)) nco_xcp_prc(var_trv_1->nm,var_prc_2[idx]->type,var_prc_out[idx]->sz,(char *)var_prc_2[idx]->val.vp);
#ifdef _OPENMP
# pragma omp critical
#endif /* _OPENMP */
    { /* begin OpenMP critical */
      /* Copy interpolations to output file */
      if(!var_prc_out[idx]->nbr_dim) (void)nco_put_var1(grp_out_id,var_prc_out[idx]->id,var_prc_out[idx]->srt,var_prc_2[idx]->val.vp,var_prc_2[idx]->type); else (void)nco_put_vara(grp_out_id,var_prc_out[idx]->id,var_prc_out[idx]->srt,var_prc_out[idx]->cnt,var_prc_2[idx]->val.vp,var_prc_2[idx]->type);
    } /* end OpenMP critical */

    /* Free dynamically allocated buffers */
    if(var_prc_1[idx]) var_prc_1[idx]=nco_var_free(var_prc_1[idx]);
    if(var_prc_2[idx]) var_prc_2[idx]=nco_var_free(var_prc_2[idx]);
    if(var_prc_out[idx]) var_prc_out[idx]=nco_var_free(var_prc_out[idx]);

  } /* end (OpenMP parallel for) loop over idx */
  if(nco_dbg_lvl >= nco_dbg_var) (void)fprintf(stderr,"\n");

  /* Close input netCDF files */
  for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) nco_close(in_id_1_arr[thr_idx]);
  for(thr_idx=0;thr_idx<thr_nbr;thr_idx++) nco_close(in_id_2_arr[thr_idx]);

  /* Close output file and move it from temporary to permanent location */
  (void)nco_fl_out_cls(fl_out,fl_out_tmp,out_id);

  /* Remove local copy of file */
  if(FILE_1_RETRIEVED_FROM_REMOTE_LOCATION && RM_RMT_FL_PST_PRC) (void)nco_fl_rm(fl_in_1);
  if(FILE_2_RETRIEVED_FROM_REMOTE_LOCATION && RM_RMT_FL_PST_PRC) (void)nco_fl_rm(fl_in_2);

  /* Clean memory unless dirty memory allowed */
  if(flg_cln){
    /* ncflint-specific memory */
    if(fl_in_1) fl_in_1=(char *)nco_free(fl_in_1);
    if(fl_in_2) fl_in_2=(char *)nco_free(fl_in_2);
    var_prc_1=(var_sct **)nco_free(var_prc_1);
    var_prc_2=(var_sct **)nco_free(var_prc_2);
    if(wgt_1) wgt_1=(var_sct *)nco_var_free(wgt_1);
    if(wgt_2) wgt_2=(var_sct *)nco_var_free(wgt_2);
    if(wgt_out_1) wgt_out_1=(var_sct *)nco_var_free(wgt_out_1);
    if(wgt_out_2) wgt_out_2=(var_sct *)nco_var_free(wgt_out_2);

    /* NCO-generic clean-up */
    /* Free individual strings/arrays */
    if(cmd_ln) cmd_ln=(char *)nco_free(cmd_ln);
    if(cnk_map_sng) cnk_map_sng=(char *)nco_free(cnk_map_sng);
    if(cnk_plc_sng) cnk_plc_sng=(char *)nco_free(cnk_plc_sng);
    if(fl_out) fl_out=(char *)nco_free(fl_out);
    if(fl_out_tmp) fl_out_tmp=(char *)nco_free(fl_out_tmp);
    if(fl_pth) fl_pth=(char *)nco_free(fl_pth);
    if(fl_pth_lcl) fl_pth_lcl=(char *)nco_free(fl_pth_lcl);
    if(in_id_1_arr) in_id_1_arr=(int *)nco_free(in_id_1_arr);
    if(in_id_2_arr) in_id_2_arr=(int *)nco_free(in_id_2_arr);
    /* Free lists of strings */
    if(fl_lst_in && fl_lst_abb == NULL) fl_lst_in=nco_sng_lst_free(fl_lst_in,fl_nbr); 
    if(fl_lst_in && fl_lst_abb) fl_lst_in=nco_sng_lst_free(fl_lst_in,1);
    if(fl_lst_abb) fl_lst_abb=nco_sng_lst_free(fl_lst_abb,abb_arg_nbr);
    if(var_lst_in_nbr > 0) var_lst_in=nco_sng_lst_free(var_lst_in,var_lst_in_nbr);
    /* Free limits */
    for(idx=0;idx<aux_nbr;idx++) aux_arg[idx]=(char *)nco_free(aux_arg[idx]);
    for(idx=0;idx<lmt_nbr;idx++) lmt_arg[idx]=(char *)nco_free(lmt_arg[idx]);
    for(idx=0;idx<ppc_nbr;idx++) ppc_arg[idx]=(char *)nco_free(ppc_arg[idx]);
    /* Free chunking information */
    for(idx=0;idx<cnk_nbr;idx++) cnk_arg[idx]=(char *)nco_free(cnk_arg[idx]);
    if(cnk_nbr > 0) cnk.cnk_dmn=(cnk_dmn_sct **)nco_cnk_lst_free(cnk.cnk_dmn,cnk_nbr);
    var=(var_sct **)nco_free(var);
    var_out=(var_sct **)nco_free(var_out);
    var_prc_out=(var_sct **)nco_free(var_prc_out);
    if(nbr_var_fix > 0) var_fix=nco_var_lst_free(var_fix,nbr_var_fix);
    if(nbr_var_fix > 0) var_fix_out=nco_var_lst_free(var_fix_out,nbr_var_fix);
    trv_tbl_free(trv_tbl); 
    for(idx=0;idx<lmt_nbr;idx++) flg_dne[idx].dim_nm=(char *)nco_free(flg_dne[idx].dim_nm);
    if(flg_dne) flg_dne=(nco_dmn_dne_t *)nco_free(flg_dne);
    if(gpe) gpe=(gpe_sct *)nco_gpe_free(gpe);
  } /* !flg_cln */

#ifdef ENABLE_MPI
  MPI_Finalize();
#endif /* !ENABLE_MPI */
  
  /* End timer */ 
  ddra_info.tmr_flg=nco_tmr_end; /* [enm] Timer flag */
  rcd+=nco_ddra((char *)NULL,(char *)NULL,&ddra_info);
  if(rcd != NC_NOERR) nco_err_exit(rcd,"main");

  nco_exit_gracefully();
  return EXIT_SUCCESS;
} /* end main() */