Patrick and Peter,
you may need to use gdbiint first
https://www.unidata.ucar.edu/cgi-bin/gempak/manual/programs_index?gdbiint
to interpolate from one grid projection to another.
-mj
On Feb 6, 2013, at 10:59, "Patrick L. Francis" <wxprofessor@xxxxxxxxx> wrote:
> If you have a file with existing navigation parameters use GDMOD to move your
> desired data into that spatial domain:
>
> Ref: https://www.unidata.ucar.edu/cgi-bin/gempak/manual/programs_index?gdmod
>
> If you need to create specific navigation parameters to suit your needs, use
> GDCFIL to create from scratch, or ‘copy’ using CPYFIL:
>
> Ref: https://www.unidata.ucar.edu/cgi-bin/gempak/manual/programs_index?gdcfil
>
> Cheers,
>
> --patrick
>
>
> --------------------
> Patrick L. Francis
> VP Media Logic Group
> http://www.medialogicgroup.com
> http://www.hamweather.com
> http://www.alertsbroadcaster.com
> http://www.modelweather.com
>
> FB: http://www.facebook.com/wxprofessor
> --
>
> From: gembud-bounces@xxxxxxxxxxxxxxxx
> [mailto:gembud-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Peter Banacos - NWS
> Federal
> Sent: Wednesday, February 06, 2013 11:55 AM
> To: gembud@xxxxxxxxxxxxxxxx
> Subject: [gembud] merging awip32-fixed.gem with a NARR sub-region
>
> List:
>
> I've downloaded a small sub-region of NARR data from NOMADS covering just a
> portion of the NE CONUS and have converted the files to *.gem.
>
> I'm trying to add the awip32-fixed.gem file with these subdomain NARR files,
> but the spatial domains don't match, obviously. I have no trouble adding this
> grid file for the entire NARR domain.
>
> I thought it would be easy to "crop" the awip32-fixed.gem file to the same
> lat/lon boundaries as my NARR data, and go from there, but I'm having
> difficulty with this. Anyone have any ideas? Is there a better way?
>
> The raw metadata for the two files from GDINFO is listed below...
>
> Thanks in advance for any assistance you can provide.
>
> Pete Banacos
> NOAA/NWS BTV
> -----
>
> GRID FILE: awip32-fixed.gem
>
> GRID NAVIGATION:
> PROJECTION: LCC
> ANGLES: 50.0 -107.0 50.0
> GRID SIZE: 349 277
> LL CORNER: 1.00 -145.50
> UR CORNER: 46.35 -2.57
>
> GRID ANALYSIS BLOCK:
> UNKNOWN ANALYSIS TYPE
>
> Number of grids in file: 20
>
> GRID FILE: narr-a_221_20060114_2100_000.gem
>
> GRID NAVIGATION:
> PROJECTION: LCC
> ANGLES: 50.0 -107.0 50.0
> GRID SIZE: 24 22
> LL CORNER: 42.52 -80.74
> UR CORNER: 45.27 -68.77
>
> GRID ANALYSIS BLOCK:
> UNKNOWN ANALYSIS TYPE
>
> Number of grids in file: 423
>
> --
> Peter C. Banacos, Lead Forecaster
> NOAA/National Weather Service
> WFO Burlington, VT
> weather.gov/btv
> E-mail: peter.banacos@xxxxxxxx
> Phone: (802) 862-2475
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