コード例 #1
0
ファイル: smf_subip.c プロジェクト: edwardchapin/starlink
void smf_subip(  ThrWorkForce *wf, smfArray *res, smfArray *lut, int *lbnd_out,
                 int *ubnd_out, AstKeyMap *keymap, AstFrameSet *outfs, int *status ) {

/* Local Variables: */
   HDSLoc *loc = NULL;
   HDSLoc *sloc = NULL;
   SmfSubIPData *job_data = NULL;
   SmfSubIPData *pdata;
   char ipref[200];
   char subname[10];
   const char *ipdata;
   const char *qu;
   dim_t bolostep;
   dim_t nbolo;
   dim_t ntslice;
   double *angcdata;
   double *c0data;
   double *imapdata;
   double *ipang;
   double *p0data;
   double *p1data;
   int angcndf;
   int c0ndf;
   int imapndf;
   int iw;
   int nmap;
   int nw;
   int p0ndf;
   int p1ndf;
   size_t bstride;
   size_t idx;
   size_t tstride;
   smfData *data;
   smf_qual_t *qua_data;

/* Check inherited status */
   if( *status != SAI__OK ) return;

/* Check if we have pol2 data, and see if it is Q or U. */
   qu = NULL;
   for( idx = 0; idx < res->ndat; idx++ ) {
      data = res->sdata[idx];

      if( !strcmp( data->hdr->dlabel, "Q" ) ){
         if( !qu ) {
            qu = "Q";
         } else if( strcmp( qu, "Q" ) ) {
            *status = SAI__ERROR;
            break;
         }

      } else if( !strcmp( data->hdr->dlabel, "U" ) ) {
         if( !qu ) {
            qu = "U";
         } else if( strcmp( qu, "U" ) ) {
            *status = SAI__ERROR;
            break;
         }

      } else if( qu ) {
         *status = SAI__ERROR;
         qu = NULL;
         break;
      }
   }

/* Report an error if there is a mix of pol2 and non-pol2, or a mix of Q
   and U. */
   if( *status != SAI__OK ) {
      if( qu ) {
         errRep( "", "smf_subip: Input data contains mix of Q and U "
                 "data", status );
      } else {
         errRep( "", "smf_subip: Input data contains mix of POL2 and "
                 "non-POL2 data", status );
      }

/* If we have pol2 data, get the path to the total intensity image that
   is to be used to define the level of IP correction required. If no
   value is supplied, annul the error and set "qu" NULL to indicate we should
   leave immediately. */
   } else if( qu && *status == SAI__OK ) {
      parGet0c( "IPREF", ipref, sizeof(ipref), status );
      if( *status == PAR__NULL ) {
         errAnnul( status );
         qu = NULL;
      }
   }

/* If we are applying IP correction... */
   if( qu && *status == SAI__OK ) {
      msgOutf( "", "smf_subip: applying instrumental polarisation %s "
               "correction based on total intensity map `%s'", status,
               qu, ipref );

/* Get an identifier for the IPREF NDF. */
      ndfFind( NULL, ipref, &imapndf, status );

/* Resample the NDFs data values onto the output map grid. */
      imapdata = smf_alignndf( imapndf, outfs, lbnd_out, ubnd_out,
                               status );

/* Annul the NDF identifier. */
      ndfAnnul( &imapndf, status );

/* Create structures used to pass information to the worker threads. */
      nw = wf ? wf->nworker : 1;
      job_data = astMalloc( nw*sizeof( *job_data ) );

/* Get the path to the container file holding the IP model parameters. */
      ipdata = "$STARLINK_DIR/share/smurf/ipdata.sdf";
      astMapGet0C( keymap, "IPDATA", &ipdata );

/* Open the container file. */
      hdsOpen( ipdata, "READ", &loc, status );

/* Do the IP correction for each subarray (s8a, s8b, etc) in turn. */
      for( idx = 0; idx < res->ndat && *status == SAI__OK; idx++ ) {
         data = res->sdata[idx];

/* Get an array holding the angle (rad.s) from north to focal plane Y,
   measured positive in the sense of rotation from focal plane Y to focal
   plane X, for every bolometer sample in the smfData. The values are bolo
   ordered so that "bstride" is 1 and "tstsride" is nbolo. */
         ipang = smf1_calcang( data, status );

/* Get the number of bolometers and time slices for the current subarray,
   together with the strides between adjacent bolometers and adjacent
   time slices. */
         smf_get_dims( data,  NULL, NULL, &nbolo, &ntslice, NULL, &bstride,
                       &tstride, status );

/* Get a locator for the structure holding the IP parameters for the
   current subarray */
         smf_find_subarray( data->hdr, subname, sizeof( subname ), NULL,
                            status );
         datFind( loc, subname, &sloc, status );

/* Begin an NDF context. */
         ndfBegin();

/* Get identifiers for the NDFs holding the individual parameters. Each
   NDF holds a parameter value for each bolometer. */
         ndfFind( sloc, "P0", &p0ndf, status );
         ndfFind( sloc, "P1", &p1ndf, status );
         ndfFind( sloc, "C0", &c0ndf, status );
         ndfFind( sloc, "ANGC", &angcndf, status );

/* Map them. Check each one has the expected number of elements. */
         ndfMap( p0ndf, "DATA", "_DOUBLE", "READ", (void **) &p0data,
                 &nmap, status );
         if( nmap != (int) nbolo && *status == SAI__OK ) {
            *status = SAI__ERROR;
            ndfMsg( "N", p0ndf );
            errRep( "", "smf_subip: Bad dimensions for ^N - should be 32x40.", status );
         }

         ndfMap( p1ndf, "DATA", "_DOUBLE", "READ", (void **) &p1data,
                 &nmap, status );
         if( nmap != (int) nbolo && *status == SAI__OK ) {
            *status = SAI__ERROR;
            ndfMsg( "N", p1ndf );
            errRep( "", "smf_subip: Bad dimensions for ^N - should be 32x40.", status );
         }

         ndfMap( c0ndf, "DATA", "_DOUBLE", "READ", (void **) &c0data,
                 &nmap, status );
         if( nmap != (int) nbolo && *status == SAI__OK ) {
            *status = SAI__ERROR;
            ndfMsg( "N", c0ndf );
            errRep( "", "smf_subip: Bad dimensions for ^N - should be 32x40.", status );
         }

         ndfMap( angcndf, "DATA", "_DOUBLE", "READ", (void **) &angcdata,
                 &nmap, status );
         if( nmap != (int) nbolo && *status == SAI__OK ) {
            *status = SAI__ERROR;
            ndfMsg( "N", angcndf );
            errRep( "", "smf_subip: Bad dimensions for ^N - should be 32x40.", status );
         }

/* Get a pointer to the quality array for the residuals. */
         qua_data = smf_select_qualpntr( data, NULL, status );

/* See how many bolometers to process in each thread. */
         bolostep = nbolo/nw;
         if( bolostep == 0 ) bolostep = 1;

/* Create jobs to apply the IP correction to a range of bolometers. */
         for( iw = 0; iw < nw; iw++ ) {
            pdata = job_data + iw;

/* Set the range of bolometers (b1 to b2) to be processed by the current
   job. */
            pdata->b1 = iw*bolostep;
            if( iw < nw - 1 ) {
               pdata->b2 = pdata->b1 + bolostep - 1;
            } else {
               pdata->b2 = nbolo - 1 ;
            }

/* Store the other info needed by the worker thread. */
            pdata->ntslice = ntslice;
            pdata->nbolo = nbolo;
            pdata->res_data = res->sdata[idx]->pntr[0];
            pdata->lut_data = lut->sdata[idx]->pntr[0];
            pdata->qua_data = qua_data;
            pdata->ipang = ipang;
            pdata->bstride = bstride;
            pdata->tstride = tstride;
            pdata->imapdata = imapdata;
            pdata->qu = qu;
            pdata->p0data = p0data;
            pdata->p1data = p1data;
            pdata->c0data = c0data;
            pdata->angcdata = angcdata;
            pdata->allstate = data->hdr->allState;

/* Submit the job for execution by the next available thread. */
            thrAddJob( wf, 0, pdata, smf1_subip, 0, NULL, status );
         }

/* Wait for all jobs to complete. */
         thrWait( wf, status );

/* End the NDF context, thus unmapping and freeing all NDF identifiers
   created since the context was started. */
         ndfEnd( status );

/* Free locator for subarray IP parameters. */
         datAnnul( &sloc, status );
         ipang = astFree( ipang );
      }

/* Free resources. */
      datAnnul( &loc, status );
      imapdata = astFree( imapdata );
      job_data = astFree( job_data );
   }
}
コード例 #2
0
ファイル: smurf_unmakemap.c プロジェクト: wadawson/starlink
void smurf_unmakemap( int *status ) {

/* Local Variables */
   AstFrameSet *wcsin = NULL; /* WCS Frameset for input cube */
   AstMapping *skymap;        /* GRID->SkyFrame Mapping from input WCS */
   AstSkyFrame *abskyfrm;     /* Input SkyFrame (always absolute) */
   AstSkyFrame *skyfrm = NULL;/* SkyFrame from the input WCS Frameset */
   Grp *igrp1 = NULL;         /* Group of input sky files */
   Grp *igrp2 = NULL;         /* Group of input template files */
   Grp *igrpc = NULL;         /* Group of input COM files */
   Grp *igrpg = NULL;         /* Group of input GAI files */
   Grp *igrpq = NULL;         /* Group of input Q  sky files */
   Grp *igrpu = NULL;         /* Group of input U sky files */
   Grp *ogrp = NULL;          /* Group containing output file */
   HDSLoc *cloc = NULL;       /* HDS locator for component ipdata structure */
   HDSLoc *iploc = NULL;      /* HDS locator for top level ipdata structure */
   ThrWorkForce *wf = NULL;   /* Pointer to a pool of worker threads */
   char ipdata[ 200 ];        /* Text buffer for IPDATA value */
   char pabuf[ 10 ];          /* Text buffer for parameter value */
   char subarray[ 5 ];        /* Name of SCUBA-2 subarray (s8a,s8b,etc) */
   dim_t iel;                 /* Index of next element */
   dim_t ndata;               /* Number of elements in array */
   dim_t ntslice;             /* Number of time slices in array */
   double *ang_data = NULL;   /* Pointer to the FP orientation angles */
   double *angc_data = NULL;  /* Pointer to the instrumental ANGC data */
   double *c0_data = NULL;    /* Pointer to the instrumental C0 data */
   double *gai_data = NULL;   /* Pointer to the input GAI map */
   double *in_data = NULL;    /* Pointer to the input I sky map */
   double *inc_data = NULL;   /* Pointer to the input COM data */
   double *inq_data = NULL;   /* Pointer to the input Q sky map */
   double *inu_data = NULL;   /* Pointer to the input U sky map */
   double *outq_data = NULL;  /* Pointer to the Q time series data */
   double *outu_data = NULL;  /* Pointer to the U time series data */
   double *p0_data = NULL;    /* Pointer to the instrumental P0 data */
   double *p1_data = NULL;    /* Pointer to the instrumental P1 data */
   double *pd;                /* Pointer to next element */
   double *pq = NULL;         /* Pointer to next Q time series value */
   double *pu = NULL;         /* Pointer to next U time series value */
   double *qinst_data = NULL; /* Pointer to the instrumental Q data */
   double *uinst_data = NULL; /* Pointer to the instrumental U data */
   double amp16;              /* Amplitude of 16 Hz signal */
   double amp2;               /* Amplitude of 2 Hz signal */
   double amp4;               /* Amplitude of 4 Hz signal */
   double angrot;             /* Angle from focal plane X axis to fixed analyser */
   double paoff;              /* WPLATE value corresponding to POL_ANG=0.0 */
   double params[ 4 ];        /* astResample parameters */
   double phase16;            /* Phase of 16 Hz signal */
   double phase2;             /* Phase of 2 Hz signal */
   double phase4;             /* Phase of 4 Hz signal */
   double sigma;              /* Standard deviation of noise to add to output */
   int alignsys;              /* Align data in the map's system? */
   int cdims[ 3 ];            /* Common-mode NDF dimensions */
   int dims[ NDF__MXDIM ];    /* NDF dimensions */
   int flag;                  /* Was the group expression flagged? */
   int gdims[ 3 ];            /* GAI model NDF dimensions */
   int harmonic;              /* The requested harmonic */
   int ifile;                 /* Input file index */
   int indf;                  /* Input sky map NDF identifier */
   int indfangc;              /* IP ANGC values NDF identifier */
   int indfc0;                /* IP C0 values NDF identifier */
   int indfc;                 /* Input COM NDF identifier */
   int indfcs;                /* NDF identifier for matching section of COM */
   int indfg;                 /* Input GAI NDF identifier */
   int indfin;                /* Input template cube NDF identifier */
   int indfiq;                /* Input instrumental Q NDF */
   int indfiu;                /* Input instrumental U NDF */
   int indfout;               /* Output cube NDF identifier */
   int indfp0;                /* IP P0 values NDF identifier */
   int indfp1;                /* IP P1 values NDF identifier */
   int indfq;                 /* Input Q map NDF identifier */
   int indfu;                 /* Input U map NDF identifier */
   int interp = 0;            /* Pixel interpolation method */
   int lbndc[ 3 ];            /* Array of lower bounds of COM NDF */
   int moving;                /* Is the telescope base position changing? */
   int ndim;                  /* Number of pixel axes in NDF */
   int ndimc;                 /* Number of pixel axes in common-mode NDF */
   int ndimg;                 /* Number of pixel axes in GAI NDF */
   int nel;                   /* Number of elements in array */
   int nelc;                  /* Number of elements in COM array */
   int nelg;                  /* Number of elements in GAI array */
   int nelqu;                 /* Number of elements in Q or U array */
   int ngood;                 /* No. of good values in putput cube */
   int nparam = 0;            /* No. of parameters required for interpolation scheme */
   int pasign;                /* Indicates sense of POL_ANG value */
   int sdim[ 2 ];             /* Array of significant pixel axes */
   int slbnd[ 2 ];            /* Array of lower bounds of input map */
   int subnd[ 2 ];            /* Array of upper bounds of input map */
   int ubndc[ 3 ];            /* Array of upper bounds of COM NDF */
   size_t ncom;               /* Number of com files */
   size_t ngai;               /* Number of gai files */
   size_t nskymap;            /* Number of supplied sky cubes */
   size_t outsize;            /* Number of files in output group */
   size_t size;               /* Number of files in input group */
   smfData *odata = NULL;     /* Pointer to output data struct */

/* Check inherited status */
   if( *status != SAI__OK ) return;

/* Begin an AST context */
   astBegin;

/* Begin an NDF context. */
   ndfBegin();

/* Find the number of cores/processors available and create a pool of
   threads of the same size. */
   wf = thrGetWorkforce( thrGetNThread( SMF__THREADS, status ), status );

/* Get an identifier for the input NDF. We use NDG (via kpg1Rgndf)
   instead of calling ndfAssoc directly since NDF/HDS has problems with
   file names containing spaces, which NDG does not have. */
   kpg1Rgndf( "IN", 1, 1, "", &igrp1, &nskymap, status );
   ndgNdfas( igrp1, 1, "READ", &indf, status );

/* Map the data array in the input sky map. */
   ndfMap( indf, "DATA", "_DOUBLE", "READ", (void **) &in_data, &nel,
           status );

/* Get the WCS FrameSet from the sky map, together with its pixel index
   bounds. */
   kpg1Asget( indf, 2, 0, 1, 1, sdim, slbnd, subnd, &wcsin, status );

/* Check the current Frame is a SKY frame. */
   skyfrm = astGetFrame( wcsin, AST__CURRENT );
   if( !astIsASkyFrame( skyfrm ) && *status == SAI__OK ) {
      ndfMsg( "N", indf );
      *status = SAI__ERROR;
      errRep( " ", " Current Frame in ^N is not a SKY Frame.", status );
   }

/* Get a copy of the current frame that represents absolute coords rather
   than offsets. We assume the target is moving if the map represents
   offsets. */
   moving = ( *status == SAI__OK &&
              !strcmp( astGetC( skyfrm, "SkyRefIs" ), "Origin" ) ) ? 1 : 0;
   abskyfrm = astCopy( skyfrm );
   astClear( abskyfrm, "SkyRefIs" );

/* If the ALIGNSYS parameter is TRUE then we align the raw data with the
   map in the current system of the map, rather than the default ICRS. */
   parGet0l( "ALIGNSYS", &alignsys, status );
   if( alignsys ) astSetC( abskyfrm, "AlignSystem", astGetC( abskyfrm,
                                                             "System" ) );

/* Get the Mapping from the Sky Frame to grid axis in the iput map. */
   skymap = astGetMapping( wcsin, AST__CURRENT, AST__BASE );

/* Get the pixel interpolation scheme to use. */
   parChoic( "INTERP", "NEAREST", "NEAREST,LINEAR,SINC,"
             "SINCSINC,SINCCOS,SINCGAUSS,SOMB,SOMBCOS",
             1, pabuf, 10, status );

   if( !strcmp( pabuf, "NEAREST" ) ) {
      interp = AST__NEAREST;
      nparam = 0;

   } else if( !strcmp( pabuf, "LINEAR" ) ) {
      interp = AST__LINEAR;
      nparam = 0;

   } else if( !strcmp( pabuf, "SINC" ) ) {
      interp = AST__SINC;
      nparam = 1;

   } else if( !strcmp( pabuf, "SINCSINC" ) ) {
      interp = AST__SINCSINC;
      nparam = 2;

   } else if( !strcmp( pabuf, "SINCCOS" ) ) {
      interp = AST__SINCCOS;
      nparam = 2;

   } else if( !strcmp( pabuf, "SINCGAUSS" ) ) {
      interp = AST__SINCGAUSS;
      nparam = 2;

   } else if( !strcmp( pabuf, "SOMB" ) ) {
      interp = AST__SOMB;
      nparam = 1;

   } else if( !strcmp( pabuf, "SOMBCOS" ) ) {
      interp = AST__SOMBCOS;
      nparam = 2;

   } else if( *status == SAI__OK ) {
      nparam = 0;
      *status = SAI__ERROR;
      msgSetc( "V", pabuf );
      errRep( "", "Support not available for INTERP = ^V (programming "
              "error)", status );
   }

/* Get an additional parameter vector if required. */
   if( nparam > 0 ) parExacd( "PARAMS", nparam, params, status );

/* Get a group of reference time series files to use as templates for
   the output time series files.*/
   ndgAssoc( "REF", 1, &igrp2, &size, &flag, status );

/* Get output file(s) */
   kpg1Wgndf( "OUT", igrp2, size, size, "More output files required...",
              &ogrp, &outsize, status );

/* Get he noise level to add to the output data. */
   parGet0d( "SIGMA", &sigma, status );

/* Get any Q and U input maps. */
   if( *status == SAI__OK ) {

      kpg1Rgndf( "QIN", 1, 1, "", &igrpq, &nskymap, status );
      ndgNdfas( igrpq, 1, "READ", &indfq, status );
      ndfMap( indfq, "DATA", "_DOUBLE", "READ", (void **) &inq_data, &nelqu,
              status );
      if( nelqu != nel && *status == SAI__OK ) {
         ndfMsg( "Q", indfq );
         *status = SAI__ERROR;
         errRep( "", "Q image '^Q' is not the same size as the I image.",
                 status );
      }

      kpg1Rgndf( "UIN", 1, 1, "", &igrpu, &nskymap, status );
      ndgNdfas( igrpu, 1, "READ", &indfu, status );
      ndfMap( indfu, "DATA", "_DOUBLE", "READ", (void **) &inu_data, &nelqu,
              status );
      if( nelqu != nel && *status == SAI__OK ) {
         ndfMsg( "U", indfu );
         *status = SAI__ERROR;
         errRep( "", "U image '^U' is not the same size as the I image.",
                 status );
      }

      if( *status == PAR__NULL ) {
         ndfAnnul( &indfq, status );
         ndfAnnul( &indfu, status );
         inq_data = NULL;
         inu_data = NULL;
         errAnnul( status );
      } else {
         parGet0d( "ANGROT", &angrot, status );
         parGet0d( "PAOFF", &paoff, status );
         parGet0l( "PASIGN", &pasign, status );
      }
   }

/* Get any common-mode files. */
   if( *status == SAI__OK ) {
      kpg1Rgndf( "COM", size, size, "", &igrpc, &ncom, status );
      if( *status == PAR__NULL ) {
         errAnnul( status );
         ncom = 0;
      }
   }

/* Get any GAI files. */
   if( *status == SAI__OK ) {
      kpg1Rgndf( "GAI", size, size, "", &igrpg, &ngai, status );
      if( *status == PAR__NULL ) {
         errAnnul( status );
         ngai = 0;
      }
   }

/* Get any instrumental polarisation files. */
   if( *status == SAI__OK ) {

/* First see if the user wants to use the "INSTQ/INSTU" scheme for
   specifying instrumental polarisation. */
      ndfAssoc( "INSTQ", "Read", &indfiq, status );
      ndfAssoc( "INSTU", "Read", &indfiu, status );

      if( *status == PAR__NULL ) {
         ndfAnnul( &indfiq, status );
         ndfAnnul( &indfiu, status );
         errAnnul( status );

      } else {
         msgOut( " ", "Using user-defined IP model", status );

         ndfDim( indfiq, 2, dims, &ndim, status );
         if( dims[ 0 ] != 32 || dims[ 1 ] != 40 ) {
            *status = SAI__ERROR;
            ndfMsg( "N", indfiq );
            errRep( " ", "Instrumental polarisation file ^N has bad "
                    "dimensions - should be 32x40.", status );
         } else {
            ndfMap( indfiq, "DATA", "_DOUBLE", "READ", (void **) &qinst_data,
                    &nel, status );
         }

         ndfDim( indfiu, 2, dims, &ndim, status );
         if( dims[ 0 ] != 32 || dims[ 1 ] != 40 ) {
            *status = SAI__ERROR;
            ndfMsg( "N", indfiu );
            errRep( " ", "Instrumental polarisation file ^N has bad "
                    "dimensions - should be 32x40.", status );
         } else {
            ndfMap( indfiu, "DATA", "_DOUBLE", "READ", (void **) &uinst_data,
                    &nel, status );
         }
      }

/* If not, see if the user wants to use the Johnstone/Kennedy instrumental
   polarisation model. The IPDATA parameter gives the path to an HDS
   container file contining NDFs holding the required IP data for all
   subarrays. */
      if( !qinst_data ) {
         parGet0c( "IPDATA", ipdata, sizeof(ipdata), status );
         if( *status == PAR__NULL ) {
            errAnnul( status );
         } else {
            msgOutf( " ", "Using Johnstone/Kennedy IP model in %s",
                     status, ipdata );
            hdsOpen( ipdata, "READ", &iploc, status );
         }
      }
   }

/* Loop round all the template time series files. */
   for( ifile = 1; ifile <= (int) size && *status == SAI__OK; ifile++ ) {

/* Start a new NDF context. */
      ndfBegin();

/* Create the output NDF by propagating everything from the input, except
   for quality and variance. */
      ndgNdfas( igrp2, ifile, "READ", &indfin, status );

      ndfMsg( "FILE", indfin );
      msgSeti( "THISFILE", ifile );
      msgSeti( "NUMFILES", size );
      msgOutif( MSG__NORM, " ", "Simulating ^THISFILE/^NUMFILES ^FILE",
                status );

      ndgNdfpr( indfin, "DATA,HISTORY,LABEL,TITLE,WCS,UNITS,EXTENSION(*)",
                ogrp, ifile, &indfout, status );
      ndfAnnul( &indfin, status );
      ndfAnnul( &indfout, status );

/* We now re-open the output NDF and then modify its data values. */
      smf_open_file( wf, ogrp, ifile, "UPDATE", 0, &odata, status );

/* Issue a suitable message and abort if anything went wrong. */
      if( *status != SAI__OK ) {
         errRep( FUNC_NAME, "Could not open input template file.", status );
         break;

      } else {
         if( odata->file == NULL ) {
            *status = SAI__ERROR;
            errRep( FUNC_NAME, "No smfFile associated with smfData.",
                    status );
            break;

         } else if( odata->hdr == NULL ) {
            *status = SAI__ERROR;
            errRep( FUNC_NAME, "No smfHead associated with smfData.",
                    status );
            break;
         }
      }

/* Check the reference time series contains double precision values. */
      smf_dtype_check_fatal( odata, NULL, SMF__DOUBLE, status );

/* Get the total number of data elements, and the number of time slices. */
      smf_get_dims( odata, NULL, NULL, NULL, &ntslice, &ndata, NULL,
                    NULL, status );

/* Get the subarray name */
      smf_fits_getS( odata->hdr, "SUBARRAY", subarray, sizeof(subarray),
                     status );

/* If we are using the Johnstone/Kennedy IP model, open and map the
   relevant parameter NDFs within the IPDATA container file. */
      if( iploc ) {
         datFind( iploc, subarray, &cloc, status );

         ndfFind( cloc, "C0", &indfc0, status );
         ndfDim( indfc0, 2, dims, &ndim, status );
         if( dims[ 0 ] != 32 || dims[ 1 ] != 40 ) {
            *status = SAI__ERROR;
            ndfMsg( "N", indfc0 );
            errRep( " ", "Instrumental polarisation file ^N has bad "
                    "dimensions - should be 32x40.", status );
         } else {
            ndfMap( indfc0, "DATA", "_DOUBLE", "READ", (void **) &c0_data,
                    &nel, status );
         }

         ndfFind( cloc, "P0", &indfp0, status );
         ndfDim( indfp0, 2, dims, &ndim, status );
         if( dims[ 0 ] != 32 || dims[ 1 ] != 40 ) {
            *status = SAI__ERROR;
            ndfMsg( "N", indfp0 );
            errRep( " ", "Instrumental polarisation file ^N has bad "
                    "dimensions - should be 32x40.", status );
         } else {
            ndfMap( indfp0, "DATA", "_DOUBLE", "READ", (void **) &p0_data,
                    &nel, status );
         }

         ndfFind( cloc, "P1", &indfp1, status );
         ndfDim( indfp1, 2, dims, &ndim, status );
         if( dims[ 0 ] != 32 || dims[ 1 ] != 40 ) {
            *status = SAI__ERROR;
            ndfMsg( "N", indfp1 );
            errRep( " ", "Instrumental polarisation file ^N has bad "
                    "dimensions - should be 32x40.", status );
         } else {
            ndfMap( indfp1, "DATA", "_DOUBLE", "READ", (void **) &p1_data,
                    &nel, status );
         }

         ndfFind( cloc, "ANGC", &indfangc, status );
         ndfDim( indfangc, 2, dims, &ndim, status );
         if( dims[ 0 ] != 32 || dims[ 1 ] != 40 ) {
            *status = SAI__ERROR;
            ndfMsg( "N", indfangc );
            errRep( " ", "Instrumental polarisation file ^N has bad "
                    "dimensions - should be 32x40.", status );
         } else {
            ndfMap( indfangc, "DATA", "_DOUBLE", "READ", (void **) &angc_data,
                    &nel, status );
         }
      }

/* Open any COM file. */
      if( ncom ) {
         ndgNdfas( igrpc, ifile, "READ", &indfc, status );
         ndfDim( indfc, 3, cdims, &ndimc, status );

/* Check its dimensions. */
         if( *status == SAI__OK ) {
            if( ndimc == 1 ) {
               if( cdims[ 0 ] < (int) ntslice ) {
                  *status = SAI__ERROR;
                  ndfMsg( "C", indfc );
                  ndfMsg( "R", indfin );
                  msgSeti( "N", cdims[ 0 ] );
                  msgSeti( "M", ntslice );
                  errRep( " ", "Supplied COM file (^C) has ^N time-slices, but "
                          "the reference NDF (^R) has ^M time-slices.", status );
               } else {
                  ndfBound( indfc, 3, lbndc, ubndc, &ndimc, status );
                  ubndc[ 0 ] = lbndc[ 0 ] + ntslice - 1;
                  ndfSect( indfc, 1, lbndc, ubndc, &indfcs, status );
               }
            } else if( ndimc == 3 ) {
               if( cdims[ 0 ] != 1 || cdims[ 1 ] != 1 ) {
                  *status = SAI__ERROR;
                  ndfMsg( "C", indfc );
                  errRep( " ", "Supplied 3D COM file (^C) has bad "
                          "dimensions for axis 1 and/or 2 (should "
                          "both be 1 pixel long).", status );
               } else if( cdims[ 2 ] < (int) ntslice ) {
                  *status = SAI__ERROR;
                  ndfMsg( "C", indfc );
                  ndfMsg( "R", indfin );
                  msgSeti( "N", cdims[ 2 ] );
                  msgSeti( "M", ntslice );
                  errRep( " ", "Supplied COM file (^C) has ^N time-slices, but "
                          "the reference NDF (^R) has ^M time-slices.", status );
               } else {
                  ndfBound( indfc, 3, lbndc, ubndc, &ndimc, status );
                  ubndc[ 2 ] = lbndc[ 2 ] + ntslice - 1;
                  ndfSect( indfc, 3, lbndc, ubndc, &indfcs, status );
               }
            } else {
               *status = SAI__ERROR;
               ndfMsg( "C", indfc );
               msgSeti( "N", ndimc );
               errRep( " ", "Supplied COM file (^C) has ^N dimensions - "
                       "must be 3.", status );
            }
         }

         ndfMap( indfcs, "DATA", "_DOUBLE", "READ", (void **) &inc_data,
                 &nelc, status );

      } else {
         indfcs = NDF__NOID;
         inc_data = NULL;
      }

/* Open any GAI files. */
      if( ngai ) {
         ndgNdfas( igrpg, ifile, "READ", &indfg, status );
         ndfDim( indfg, 3, gdims, &ndimg, status );

/* Check its dimensions, and map it if OK. */
         if( *status == SAI__OK ) {
            if( ndimg != 2 ) {
               *status = SAI__ERROR;
               ndfMsg( "C", indfg );
               msgSeti( "N", ndimg );
               errRep( " ", "Supplied GAI file (^C) has ^N dimensions - "
                       "must be 2.", status );
            } else if( gdims[ 0 ] != 32 || gdims[ 1 ] != 40 ) {
               *status = SAI__ERROR;
               ndfMsg( "C", indfg );
               errRep( " ", "Supplied GAI file (^C) has has bad "
                       "dimensions - should be 32x40.", status );
            }
         }
         ndfMap( indfg, "DATA", "_DOUBLE", "READ", (void **) &gai_data,
                 &nelg, status );

      } else {
         indfg = NDF__NOID;
         gai_data = NULL;
      }

/* Fill the output with bad values. */
      if( *status == SAI__OK ) {
         pd = odata->pntr[ 0 ];
         for( iel = 0; iel < ndata; iel++ ) *(pd++) = VAL__BADD;
      }

/* Resample the sky map data into the output time series. */
      smf_resampmap( wf, odata, abskyfrm, skymap, moving, slbnd, subnd,
                     interp, params, sigma, in_data, odata->pntr[ 0 ],
                     NULL, &ngood, status );

/* Add on any COM data. */
      smf_addcom( wf, odata, inc_data, status );

/* Issue a wrning if there is no good data in the output cube. */
      if( ngood == 0 ) msgOutif( MSG__NORM, " ", "   Output contains no "
                                 "good data values.", status );

/* If Q and U maps have been given, allocate room to hold resampled Q and
   U values, and fill them with bad values. */
      if( inq_data && inu_data ) {
         pq = outq_data = astMalloc( ndata*sizeof( *outq_data ) );
         pu = outu_data = astMalloc( ndata*sizeof( *outu_data ) );
         if( *status == SAI__OK ) {
            for( iel = 0; iel < ndata; iel++ ) {
               *(pu++) = VAL__BADD;
               *(pq++) = VAL__BADD;
            }
         }

/* Determine the harmonic to use. */
         parGet0i( "HARMONIC", &harmonic, status );

/* If producing the normal 8 Hz harmonic, get the amplitude and phase of a
   other signals to add onto the 8 Hz signal. */
         if( harmonic == 4 ) {
            parGet0d( "AMP2", &amp2, status );
            parGet0d( "PHASE2", &phase2, status );
            parGet0d( "AMP4", &amp4, status );
            parGet0d( "PHASE4", &phase4, status );
            parGet0d( "AMP16", &amp16, status );
            parGet0d( "PHASE16", &phase16, status );
         } else {
            amp2 = 0.0;
            phase2 = 0.0;
            amp4 = 0.0;
            phase4 = 0.0;
            amp16 = 0.0;
            phase16 = 0.0;
         }

/* Allocate room for an array to hold the angle from the Y pixel axis
   in the sky map to the focal plane Y axis, in radians, at each time
   slice. Positive rotation is in the same sense as rotation from
   focal plane X to focal plane Y. */
         ang_data = astMalloc( ntslice*sizeof( *ang_data ) );

/* Resample them both into 3D time series. These Q/U values arw with
  respect to the sky image Y axis. */
         smf_resampmap( wf, odata, abskyfrm, skymap, moving, slbnd, subnd,
                        interp, params, sigma, inq_data, outq_data,
                        ang_data, &ngood, status );
         smf_resampmap( wf, odata, abskyfrm, skymap, moving, slbnd, subnd,
                        interp, params, sigma, inu_data, outu_data,
                        NULL, &ngood, status );

/* Combine these time series with the main output time series so that the
   main output is analysed intensity. */
         smf_uncalc_iqu( wf, odata, odata->pntr[ 0 ], outq_data, outu_data,
                         ang_data, pasign, AST__DD2R*paoff, AST__DD2R*angrot,
                         amp2, AST__DD2R*phase2, amp4, AST__DD2R*phase4,
                         amp16, AST__DD2R*phase16, qinst_data, uinst_data,
                         c0_data, p0_data, p1_data, angc_data, harmonic,
                         status );

/* Release work space. */
         outq_data = astFree( outq_data );
         outu_data = astFree( outu_data );
         ang_data = astFree( ang_data );
      }

/* Factor in any GAI data. */
      smf_addgai( wf, odata, gai_data, status );

/* Close the output time series file. */
      smf_close_file( wf, &odata, status );

/* Close the IP data container for the current subarray, if it is open. */
      if( cloc ) datAnnul( &cloc, status );

/* End the NDF context. */
      ndfEnd( status );
   }

/* Close any input data file that is still open due to an early exit from
   the above loop. */
   if( odata != NULL ) {
      smf_close_file( wf, &odata, status );
      odata = NULL;
   }

/* Free remaining resources. */
   if( igrp1 != NULL) grpDelet( &igrp1, status);
   if( igrp2 != NULL) grpDelet( &igrp2, status);
   if( igrpq != NULL) grpDelet( &igrpq, status);
   if( igrpu != NULL) grpDelet( &igrpu, status);
   if( igrpc != NULL) grpDelet( &igrpc, status);
   if( igrpg != NULL) grpDelet( &igrpg, status);
   if( ogrp != NULL) grpDelet( &ogrp, status);
   if( iploc ) datAnnul( &iploc, status );

/* End the NDF context. */
   ndfEnd( status );

/* End the tile's AST context. */
   astEnd;

/* Issue a status indication.*/
   if( *status == SAI__OK ) {
      msgOutif(MSG__VERB," ",TASK_NAME " succeeded, time series written.", status);
   } else {
      msgOutif(MSG__VERB," ",TASK_NAME " failed.", status);
   }
}