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20050607: Surface MD file is not generated in a RedHat Linux system (cont.)

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  • Subject: 20050607: Surface MD file is not generated in a RedHat Linux system (cont.)
  • Date: Tue, 07 Jun 2005 18:09:48 -0600
>From: Eirh-Yu Hsie <address@hidden>
>Organization: CU/CIRES
>Keywords: 200506032148.j53LmYZu017997 McIDAS-XCD configuration
   
Hi Hsie,

re: The question now is who made the modifications I reference above (I suspect
that it was Owen Cooper, but I don't know for sure).  The next question
is if modifying the ISFC schema (file ~mcidas/linux/workdata/DCISFC) to
support 15000 stations and using the modified XCDDEC.BAT and ISFCDEC.CFG
files would result in XCD being able to correctly decode surface data.

>Thank you for your help. At one stage, Owen needed to geneater MD file 
>with more than 7000 columns.  We modified the following 3 files:
>
>(1) txt2md.pgm - change MAXCOL from 7000 to 15000
>(2) XCDDEC.BAT - change "BILDTEXT INIT SAOMETAR.RAP SAOMETAR.RAT 7000 4 
>C4 36 1 80 SAOMETAR X 48" from 7000 to 15000
>(3)ISFCDEC.CFG - change NCOLS from 7000 to 15000

Yes, this is what I found out after poking around.

>How these can mess up surface MD file decoding?

Apparently, the MD file schema in SCHEMA must match the settings in
ISFCDEC.CFG ** OR ** the setting in the BILDTEXT line of XCDDEC.BAT
must match the settings in SCHEMA.  I first discovered the change
to XCDDEC.BAT; changed it back; deleted SAOMETAR.RAP; and reran XCDDEC.BAT.
This did not result in the flile SAOMETAR.RAT being created, so decoding
would not proceed.  It was only after I modified ISFCDEC.CFG and stopped
and restarted DMSFC that decoding began.

So, I am not sure of exactly what can be changed to increase the
number of stations decoded.  My observations were:

- with both XCDDEC.BAT and ISFCDEC.CFG modified you were not decoding
  anything

- with XCDDEC.BAT changed back to its original state and SAOMETAR.RAP
  recreated from the BILDTEXT line, no decoding was occurring

- with XCDDEC.BAT and ISFCDEC.BAT changed back to their original states
  and SAOMETAR.RAP recreated from the BILDTEXT line decoding would proceed

Cheers,

Tom
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