This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
> Full Name: Michael Splitt > Email Address: address@hidden > Organization: Florida Institute of Technology > Package Version: > Operating System: > Hardware: > Description of problem: I am using the following entry in my pqact.conf file > for LAMP, but the decoding is not working properly (see attached gdplot > image). > > NGRID ^[LM].U... KWNO > PIPE /home/gempak/NAWIPS/os/linux64/bin/dcgrib2 > -v 1 > -d /data/ldm/gempak/logs/dcgrib2_lamp.log > -e GEMTBL=/home/gempak/NAWIPS/gempak/tables > /data/ldm/gempak/hds/mos/YYYYMMDDHH_lamp.gem > > GDINFO on the *lamp.gem file gives: > > GRID NAVIGATION: > PROJECTION: LCC > ANGLES: 25.0 -95.0 25.0 > GRID SIZE: 2145 1377 > LL CORNER: 20.1920 -121.5540 > UR CORNER: 50.1055 -60.8856 Hi Michael, I noticed the grid resolution of 2145x1377, which is the 2.5km LAMP grid. The pattern action above is going to match both the 2.5km and 5km grids. This update will be in the next GEMPAK release, but I've copied the correct patterns below for you (please account for the TAB spacing below as with all pqact entries). The 5km grid is 1073x689 and will be written to files named *_lamp5km.gem. # LAMP (Local Awips MOS Products) 5km NGRID ^[LM][AB]U... KWNO PIPE dcgrib2 -v 1 -d data/gempak/logs/dcgrib2_lamp.log -e GEMTBL=/home/gempak/NAWIPS/gempak/tables data/gempak/model/mos/YYYYMMDDHH_lamp5km.gem # # LAMP 2.5km NGRID ^[LM][CD]U... KWNO PIPE dcgrib2 -v 1 -d data/gempak/logs/dcgrib2_lamp.log -e GEMTBL=/home/gempak/NAWIPS/gempak/tables data/gempak/model/mos/YYYYMMDDHH_lamp.gem Ticket Details =================== Ticket ID: ZHN-334043 Department: Support GEMPAK Priority: Normal Status: Open =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.