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Re: 970820: NetCDF file sizes
- Subject: Re: 970820: NetCDF file sizes
- Date: Thu, 21 Aug 1997 09:00:14 -0600
>To: address@hidden
>From: "Genevieve Fox" <address@hidden>
>Subject: NetCDF file sizes
>Organization: LANL
>Keywords: 199708202132.PAA07302
Hi Genevieve,
> I need some insight to a file size issue with NetCDF. I am writing out
> a 1 MB array 100 times - thus 100 MB of data - or 104857600 bytes of data.
> When I do an ls on the file, I have a file of size 209719296 bytes.
>
> Any idea why this is double the size it should be?
>
> - ---------------------------------------------------------------------------
> Here are the netcdf calls I use:
>
> io_id = nccreate(io_outfile, NC_CLOBBER);
> data_dims[0] = ncdimdef(io_id, "testx", (long)(block_items * blocks_out));
> nc_varid = ncvardef(io_id, data_name, NC_DOUBLE, 1, data_dims);
> ncendef(io_id);
>
> for (j=0; j < io_blocks_out ; j++)
> status = ncvarput(io_id, nc_varid, data_start, data_count, array);
>
> ncclose(io_outfile_id);
> - --------------------------------------------------------------------------
I'm afraid there's just not enough information here to diagnose the
problem. Could you send the output of "ncdump -h " on the file created
by your program? That will show the lengths of the dimensions and
shapes of the variables in the file. Thanks.
--Russ
_____________________________________________________________________
Russ Rew UCAR Unidata Program
address@hidden http://www.unidata.ucar.edu
