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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
>From: David Fitzgerald <address@hidden> >Organization: UCAR/Unidata >Keywords: 200103222122.f2MLMFL26416 >I have been getting some archived satellite images from the SSEC and am >having a problem viewing the Infra-red and Water Vapor images using Garp, >Nsat and Nmap. Visible images display just fine, but the IR and WV show up >as all white images. The IR and WV images DO work in McIDAS (go figure >coming from Wisconsin!), but unfortunately they have to work in Garp. Do >you know of any reason why Garp would NOT display McIDAS AREA files >correctly, particularly only for IR and Water Vapor? If so how do I fix it? > >Thanks in advance! > >Dave > >******************************************************************** >David Fitzgerald Phone: 717-871-2394 >Distributed System Specialist Fax: 717-871-4725 >Millersville University >Millersville, PA 17551 E-mail: address@hidden > > David, If the files are "raw" images without the calibration block, the default GEMPAK color table will be incorrect. Or, if there is no imgtyp.tbl entry for the platform, you could be [IM -1] no image but ist doesn't sound like that is the problem. You don't mention what satellite the images are for- so I can't guess as to whether that might be a problem. Can you send me the output of "areaInfo -v" and/or uplink one of the files to ~gbuddy/incoming? Steve Chiswell