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20031001: Problem with GDMOD and grid navigation

Kevin,

I'd have to see how you are creating the new file, but I'd always suggest using
the CPYFIL option in gdcfil to copy the navigation directly from your RUC40 
file to
the new file.

Steve Chiswell

>From: "Kevin Polston" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200310010444.h914iZk1000484

>Hi Steve,
>
>I've got another problem here that I don't understand.  I am trying to
>run GMOD to move files from the RUC model to another grid file I
>created. According to GDINFO.....the grid navigations are the same but
>when I attempt to run GDMOD....I get the error message that says there
>are different navigation files (GDMOD-10).
>
>I am unsure of what to do next since it appears that my navigation files
>are the same.  I am downloading the RUC model via the gribmaster
>software (since I can get the 0-1km helicity grids as oppossed to what
>is sent on LDM). It should be the RUC US40km grid that I am getting. I
>have attached a copy of the GDINFO returns I get for the RUC model and
>the grid file I created.
>
>GEMPAK-GDINFO>r
>
> GRID FILE: /usr1/nawips/metdat/gempak/grids/03100102_ruc_us40km.gem
>
> GRID NAVIGATION:
>     PROJECTION:          LCC
>     ANGLES:                25.0   -95.0    25.0
>     GRID SIZE:          151 113
>     LL CORNER:              16.28   -126.14
>     UR CORNER:              55.48    -57.38
>
> GRID ANALYSIS BLOCK:
>     ANALYSIS TYPE:        BARNES
>     DELTAN:               4.000
>     DELTAX:           -9999.000
>     DELTAY:           -9999.000
>     GRID AREA:            15.00 -141.00   59.00  -56.00
>     EXTEND AREA:          15.00 -141.00   59.00  -56.00
>     DATA AREA:            15.00 -141.00   59.00  -56.00
>
> Number of grids in file:  1274
>
> Maximum number of grids in file:  29999
>
>(This was the RUC Model grid data)
>
>
>
>
>
>(This is the gridfile I created)......
>
>GEMPAK-GDINFO>r
>
> GRID FILE: /usr1/nawips/metdat/gempak/oagrids/rmodelgrid
>
> GRID NAVIGATION:
>     PROJECTION:          LCC
>     ANGLES:                25.0   -95.0    25.0
>     GRID SIZE:          151 113
>     LL CORNER:              16.28   -126.14
>     UR CORNER:              55.48    -57.38
>
> GRID ANALYSIS BLOCK:
>     ANALYSIS TYPE:        BARNES
>     DELTAN:               4.000
>     DELTAX:           -9999.000
>     DELTAY:           -9999.000
>     GRID AREA:            15.00 -141.00   59.00  -56.00
>     EXTEND AREA:          15.00 -141.00   59.00  -56.00
>     DATA AREA:            15.00 -141.00   59.00  -56.00
>
> Number of grids in file:     0
>
> Maximum number of grids in file:   4999
>
>
>
>Any help would be appreciated.  Thanks.
>
>
>
>Kevin Polston
>Senior Instructor, NWSTC
>Kansas City MO 64152
>
>816-880-9314 ext 273
>