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Re: nc_inq_varndims

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  • Subject: Re: nc_inq_varndims
  • Date: Wed, 09 Aug 2006 11:19:50 -0600
"Chad Saxon, Contractor" <address@hidden> writes:

> I am thinking I have use nc_inq_vardimid to get info about the variables
> dimensions or more specifically what dimensions are used by a certain
> variable? 
>


For simplicity I suggest you use nc_inq, nc_inq_dim, nc_inq_var, and
nc_inq_att.

Those 4 functions tell you everything. Whatever you are not interested
in, just ignore. Any pointer parameter of those functions can be
handed a NULL if you don't care about that parameter.

To find out about a var:

EXTERNL int
nc_inq_var(int ncid, int varid, char *name, nc_type *xtypep, 
           int *ndimsp, int *dimidsp, int *nattsp);

Use it like this:

int nvars, ndims, ngatts, unlimdimid;
int ncid, varid, ndims, dimids[NC_MAX_DIMS], natts;
char name[NC_MAX_NAME + 1];
nc_type xtype;
int v;

if (nc_open(PATH, 0, &ncid))
   return 2;
if (nc_inq(ncid, &ndims, &nvars, &ngatts, &unlimdimid))
   return 2;
for (v = 0; v < nvars; v++)
{
    if (nc_inq_var(ncid, v, name, &xtype, &ndims, dimids, &natts))
       return 2;
       
    /* Now use dimids... */
}

Let me know if this helps!

Ed


-- 
Ed Hartnett  -- address@hidden