[gembud] wrf2gem and problem with gempak file

[haldun karan]

hi,
I converted a WRF output file into a gempak file choosing only 2 
m-temperature variable. Now I am having problems with creating a grid 
file. Can anyone out there who has had experience with wrf2gem and 
gempak plotting provide some plotting scripts or examples of how to / 
what to use for the gdcfil, gdedit and gdplot2 etc.?
Once you read the u,v, temperature and pressure and write them out to a 
gempak file (by making changes in the file convert.nl ), could you 
please explain step by step what to do, how to do to plot say 
temperature advection at 850 mb pressure level for a given time.

I have attached a script which supposedly makes a grid file.
After it is ran, I have got the following messages
*** Generating Grid file 043005_0000_grd **
 GDOUTF    Output grid file                  043005_0000_grd
 PROJ      Map projection/angles/margins|dr  mer
 GRDAREA   Area covered by grid              25.0;-102.0;36.0;-88.0
 KXKY      Number of grid points in x;y      50;50
 MAXGRD    Maximum number of grids           10000
 CPYFIL    Grid file whose navigation is to  
 ANLYSS    Grid analysis block               
 Parameters requested: GDOUTF,PROJ,GRDAREA,KXKY,MAXGRD,CPYFIL,ANLYSS.
 GEMPAK-GDCFIL> GEMPAK-GDCFIL> GEMPAK-GDCFIL> GEMPAK-GDCFIL> 
GEMPAK-GDCFIL> GEMPAK-GDCFIL> GEMPAK-GDCFIL> GEMPAK-GDCFIL>Creating 
process: gplt for queue 18055174

 GDCFIL PARAMETERS:

 New grid file:         
043005_0000_grd                                                                                                                 

 Grid projection:       
mer                                                                                                                             

 Grid area:             
25.0;-102.0;36.0;-88.0                                                                                                          

 Grid dimension:        
50;50                                                                                                                           

 Grid 
anlysis:                                                                                                                                          

 Maximum number of grids that can be added to file  
10000                                                                                                                           

grid file has just been prepared
 fill the grid file with the data from gempak file
 GDEFIL    Grid edit file                    wrf_k05_sfc.gem
 GDFILE    Grid file                         043005_0000_grd
 GPACK     Packing type/number of bits       NONE
 Parameters requested: GDEFIL,GDFILE,GPACK.
 GEMPAK-GDEDIT> GEMPAK-GDEDIT> GEMPAK-GDEDIT> GEMPAK-GDEDIT> [GDEDIT 
-3]  Valid grid identifier not found.
grid file has just been filled*

thanks in advance
Haldun

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