void main(void)
{
char vdata_name[MAX_NC_NAME], vdata_class[MAX_NC_NAME];
char fields[60];
int32 file_id, vdata_id, istat;
int32 n_records, interlace, vdata_size, vdata_ref;
int bufsz = (2 * sizeof(float32) + sizeof(char) \
+ sizeof(int16)) * NRECORDS;
int i;
uint8 databuf[((2 * sizeof(float32)) + sizeof(char) \
+ sizeof(int16)) * NRECORDS];
VOIDP fldbufptrs[4];
float32 itemp[NRECORDS], ispeed[NRECORDS];
int16 iheight[NRECORDS];
char idents[NRECORDS];
/* Open the HDF file. */
file_id = Hopen("VD_Ex4.hdf", DFACC_READ, 0);
/* Initialize the Vset interface. */
istat = Vstart(file_id);
/*
* Get the reference number for the first Vdata in
* the file.
*/
vdata_ref = -1;
vdata_ref = VSgetid(file_id, vdata_ref);
/* Attach to the first Vdata in read mode. */
vdata_id = VSattach(file_id, vdata_ref, "r");
for (i=0; i<60; i++)
fields[i] = '\0';
/* Get the list of field names. */
istat =VSinquire(vdata_id, &n_records, &interlace,
fields, &vdata_size, vdata_name);
printf("files: %s, n_records: %d, vdata_size: %d\n",
fields, n_records, vdata_size);
/* Get the class. */
istat = VSgetclass(vdata_id, vdata_class);
/* Determine the fields that will be read. */
istat = VSsetfields(vdata_id, fields);
/* Print the Vdata information. */
printf("Current Vdata name: %s \nCurrent Vdata class: %s.\n",
vdata_name, vdata_class);
/* Read the data. */
istat = VSread(vdata_id, (VOIDP)databuf, n_records,
FULL_INTERLACE);
/* set fldbufptrs and unpack field values */
fldbufptrs[0] = &idents[0];
fldbufptrs[1] = &ispeed[0];
fldbufptrs[2] = &iheight[0];
fldbufptrs[3] = &itemp[0];
istat = VSfpack(vdata_id, _HDF_VSUNPACK, fields, databuf,
bufsz, n_records, "Ident,Speed,Height,Temp",
fldbufptrs);
printf(" Temp Height Speed Ident\n");
for (i=0; i < n_records; i++) {
printf(" %6.2f %6d %6.2f %c\n",
itemp[i],iheight[i],ispeed[i],idents[i]);
}
/* Detach from the Vdata, close the interface and the file. */
istat = VSdetach(vdata_id);
istat = Vend(file_id);
istat = Hclose(file_id);
}
//// [[Rcpp::export]]
int binlist(int x) {
int numbins = 0, *binnums = NULL;
int i;
int file_id,vdata_ref, vdata_id,numrecs,pvd_id;
char PARAM[] = "chlor_a";
initbin();
/* Open the HDF file. */
file_id = Hopen("S1998001.L3b_DAY_CHL.main", DFACC_READ, 0);
if(file_id == FAIL){
fprintf(stderr,"-E- %s line %d: Hopen(%s,DFACC_READ,0) failed.\n",
__FILE__,__LINE__,"S1998001.L3b_DAY_CHL.main");
return(EXIT_FAILURE);
}
/* Initialize the Vdata interface. */
if(Vstart(file_id) == FAIL){
fprintf(stderr,"-E- %s line %d: Vstart(%d) failed.\n",
__FILE__,__LINE__,file_id);
return(EXIT_FAILURE);
}
/* Open the "BinList" Vdata. */
vdata_ref = VSfind(file_id,"BinList");
if(vdata_ref == FAIL){
fprintf(stderr,"-E- %s line %d: VSfind(%d,\"BinList\") failed.\n",
__FILE__,__LINE__,file_id);
return(EXIT_FAILURE);
}
vdata_id = VSattach(file_id, vdata_ref, "r");
if(vdata_id == FAIL){
fprintf(stderr,"-E- %s line %d: VSattach(%d,%d,\"r\") failed.\n",
__FILE__,__LINE__,file_id,vdata_ref);
return(EXIT_FAILURE);
}
/* Find out how many bins are stored in this file. */
numrecs = VSelts(vdata_id);
if(numrecs == FAIL){
fprintf(stderr,"-E- %s line %d: VSelts(%d) failed.\n",
__FILE__,__LINE__,vdata_id);
return(EXIT_FAILURE);
}
// this doesn't seem to be necessary?
/* Set up to read the fields in the BinList Vdata records. */
// if(VSsetfields(vdata_id,BLIST_FIELDS) == FAIL){
// fprintf(stderr,"-E- %s line %d: VSsetfields(%d,%s) failed.\n",
// __FILE__,__LINE__,vdata_id,BLIST_FIELDS);
// return(EXIT_FAILURE);
// }
/* Open the parameter-specific Vdata. */
vdata_ref = VSfind(file_id,PARAM);
if(vdata_ref == 0){
fprintf(stderr,"-E- %s line %d: VSfind(%d,\"%s\") failed.\n",
__FILE__,__LINE__,file_id,PARAM);
return(EXIT_FAILURE);
}
pvd_id = VSattach(file_id, vdata_ref, "r");
if(pvd_id == FAIL){
fprintf(stderr,"-E- %s line %d: VSattach(%d,%d,\"r\") failed.\n",
__FILE__,__LINE__,file_id,vdata_ref);
return(EXIT_FAILURE);
}
/* Set up to read the fields in the parameter-specific Vdata records. */
{
int len;
len = 2*strlen(PARAM) + strlen("_sum,") + strlen("_sum_sq") + 1;
param_fields = (char *)malloc(len);
if(param_fields == NULL){
fprintf(stderr,"-E- %s line %d: Memory allocation failed.\n",
__FILE__,__LINE__);
return(EXIT_FAILURE);
}
strcpy(param_fields,PARAM);
strcat(param_fields,"_sum,");
strcat(param_fields,PARAM);
strcat(param_fields,"_sum_sq");
}
if(VSsetfields(pvd_id,param_fields) == FAIL){
fprintf(stderr,"-E- %s line %d: VSsetfields(%d,%s) failed.\n",
__FILE__,__LINE__,pvd_id,param_fields);
return(EXIT_FAILURE);
}
printf(param_fields);
printf("\n");
/* Output a header record to identify the fields written out below. */
printf("%80s%15.15s %15.15s\n"," ",PARAM,PARAM);
printf(" bin centerlat centerlon");
printf(" north south west east");
printf(" n N sum_obs sum_squared_obs weight");
printf(" time_trend_bits l2_flag_bits sel\n");
printf("------- --------- ----------");
printf(" --------- --------- ---------- ----------");
printf(" ---- --- --------------- --------------- ---------------");
printf(" ---------------- -------------------------------- ---\n");
// for(i = 0; i < numbins; i++){
for(i = 0; i < 10; i++){
int recno;
// recno = binsearch(binnums[i],vdata_id,numrecs);
recno = i;
if(recno >= 0){
double n,s,w,e,clat,clon;
/*
Read the sum and sum-of-squares for the
the specified parameter for this bin.
*/
if(VSseek(pvd_id,recno) == FAIL){
fprintf(stderr,"-E- %s line %d: VSseek(%d,%d) failed.\n",
__FILE__,__LINE__,pvd_id,recno);
return(EXIT_FAILURE);
}
if(VSread(pvd_id,paramrec,1,FULL_INTERLACE) != 1){
fprintf(stderr,"-E- %s line %d: ",__FILE__,__LINE__);
fprintf(stderr,"VSread(%d,paramrec,1,FULL_INTERLACE) failed.\n",
pvd_id);
return(EXIT_FAILURE);
}
/*
VSfpack() sets the global sum and sum_sq variables
via the paramptrs pointer array.
*/
if(
VSfpack(
pvd_id,_HDF_VSUNPACK,param_fields,paramrec,PREC_SIZE,1,NULL,paramptrs
)
== FAIL){
fprintf(stderr,"-E- %s line %d: ",__FILE__,__LINE__);
fprintf(stderr,"VSfpack(%d, ...) failed.\n", pvd_id);
return(EXIT_FAILURE);
}
/* Get the geographical coordinates associated with this bin. */
// bin2latlon(binnums[i],&clat,&clon);
// bin2bounds(binnums[i],&n,&s,&w,&e);
/* Output the results. */
// printf("%7d %9.5f %10.5f %9.5f %9.5f %10.5f %10.5f ",
// binnums[i],clat,clon,n,s,w,e);
// printf("%4d %3d ",nobs,nscenes);
// printf("% .8e % .8e % .8e ",sum,sum_sq,weights);
printf("% .8e % .8e % .8e ",sum,sum_sq,0.0);
// printf("%.16s %.32s ",bitstr16(time_rec),bitstr32(flags_set));
// printf("%3d",sel_cat);
printf("\n");
}
}
if(VSdetach(pvd_id) == FAIL){
fprintf(stderr,"-E- %s line %d: VSdetach(%d) failed.\n",
__FILE__,__LINE__,pvd_id);
return(EXIT_FAILURE);
}
if(VSdetach(vdata_id) == FAIL){
fprintf(stderr,"-E- %s line %d: VSdetach(%d) failed.\n",
__FILE__,__LINE__,vdata_id);
return(EXIT_FAILURE);
}
if(Vend(file_id) == FAIL){
fprintf(stderr,"-E- %s line %d: Vend(%d) failed.\n",
__FILE__,__LINE__,file_id);
return(EXIT_FAILURE);
}
if(Hclose(file_id) == FAIL){
fprintf(stderr,"-E- %s line %d: Hclose(%d) failed.\n",
__FILE__,__LINE__,file_id);
return(EXIT_FAILURE);
}
free(param_fields);
free(binnums);
return 2;
}