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[netCDF #JCY-709704]: Names of variables in netcdf file

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  • Subject: [netCDF #JCY-709704]: Names of variables in netcdf file
  • Date: Sun, 03 Dec 2017 13:03:11 -0700
I assume that your file has no subgroups.

1. Get the list of variable ids
   int status;
   int nvars;
   int* varids;
   /* Get # of variables */
   status = nc_inq_varids(ncid, &nvars, NULL);
   if(nvars == 0) return status;
   varids = malloc(sizeof(int)*nvars);
   if(varids == NULL) {status = NC_ENOMEM; return status;}
   /* repeat to get the variable ids */
   status = nc_inq_varids(ncid, &nvars, varids);

2. Iterate over the variable ids to get the names
   int i;
   for(i=0;i<nvars;i++) {
        char name[NC_MAX_NAME+1];
        status = nc_inq_varname(ncid,varids[i],name);
        if(status != NC_NOERR) return status;
        fprintf("varid=%d varname=%s\n",varids[i],name);
   }


> Full Name: Ilkka Karasalo
> Email Address: address@hidden
> Organization: KTH
> Package Version: 4.5.1
> Operating System: Ubuntu 15.04
> Hardware:
> Description of problem:
> 
> How do I get a list of the names of all variables in an unknown netcdf
> file using the inq-... functions in the C interface (nc_open, nc_inq,
> etc) ?
> 
> 

=Dennis Heimbigner
  Unidata


Ticket Details
===================
Ticket ID: JCY-709704
Department: Support netCDF
Priority: Normal
Status: Open
===================
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