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20011023: Maximum number of grids

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  • Subject: 20011023: Maximum number of grids
  • Date: Tue, 23 Oct 2001 22:07:20 -0600
Luis,

The maximum number of grids in a file in our distribution of GEMPAK
is 30,000 (eg MMHDRS defined in $GEMPAK/include).

The number or grids that space will be allocated for is set when the
file is created (eg GDCFIL with MAXGRD, or the -m flag to dcgrib for example).

If you need to reserve more space in a file that is already full,
use gdcfil (with CPYFIL) to create a new file with the appropriate MAXGRD
and then use GDMOD to move the grids from the old file to the new file.

Steve Chiswell
Unidata User Support





>From: LUIS M FARFAN <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200110240025.f9O0Pl102183

>I am using the program "gdcfil" to create a file and, then, store gridded data
> .
>However, I have problems to control the maximum number of grids.
>For example, this is the output from "gdinfo":
>
>  GRID FILE: 061600_mm5_d4_slmo00.gem 
>
>  GRID NAVIGATION:
>      PROJECTION:          LCC
>      ANGLES:                30.0  -112.2    60.0
>      GRID SIZE:           82  67
>      LL CORNER:              32.89   -112.91
>      UR CORNER:              34.09   -111.14
>  GRID ANALYSIS BLOCK:
>       UNKNOWN ANALYSIS TYPE
>  Number of grids in file: 12000
>  Maximum number of grids in file:  12000
>
>and I am not able to write more data beyond this limit. I get the
>error line "GEMPAK, grid write error (code) -11, -11=grid file is full".
>
>In order to increase this limit, could you please give me instructions on the
>file(s) I need to modify? I assume that I will need to recompile the code to
>make this change effective.
>
>Many thanks,
>-- 
>Luis M Farfan
>