20010322: image display problems in garp, nsat and nmap

>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