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
