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20000926: 20000926: GARP/NSAT color enhancement bug?

Chris,

With ntl running, all of the GEMPAK applications will share a common
color map, so ifthe LUTFIL in a script is different than the looping
display, that will affect the change. The best solution I can currently
recommend is having the scripts draw to an Xvfb display instead of
your console.

In the next 5.5 release of GEMPAK, I will have a gif2 driver which will
run without an X server to draw to. The disadvantage is that without
connecting to an X server, hardware fonts are not available. So,
text is not as pleasing as with the high quality fonts provided by
X and other devices such as ps printers.

Steve Chiswell
Unidata User Support


>From: address@hidden (Chris Hennon)
>Organization: UCAR/Unidata
>Keywords: 200009261752.e8QHqjb05537

>Steve -
>
>Looks like my cron jobs are interfering - I had a static VIS image up in
>GARP when my goes8 scripts fired up at 46 past the hour.  Right at that
>time, the image started to be altered.  It scrolls through all of the
>enhancements that I use in my scripts, then returned to normal when the
>scripts stopped at 52 past the hour.  
>
>Chris 
>
>
>================================================
>| Chris Hennon        Ohio State University   |
>| Tropical Meteorology      address@hidden   |
>|                                              |
>| Dept of Geography   Office: 1155 Derby Hall  |
>| 1036 Derby Hall     Phone : (614) 292-2704   |
>| Columbus, OH 43210  Fax   : (614) 292-6213   |
>================================================
>
>On Tue, 26 Sep 2000, Unidata Support wrote:
>
>> >From: address@hidden (Chris Hennon)
>> >Organization: UCAR/Unidata
>> >Keywords: 200009261704.e8QH4Gb03789
>> 
>> >Steve -
>> >
>> >Since I have installed patch level 17, I have noticed some new behavior
>> >when you loop IR satellite images in GARP and NSAT.  When I select a color
>> >enhancement, the loop runs for about 45 seconds with the enhancement, then
>> >automatically switches to a different enhancement scheme.  This goes on
>> >indefinitely.  Is there a switch to turn this off?  Thanks.
>> >
>> >Chris
>> >
>> >================================================
>> >| Chris Hennon             Ohio State University   |
>> >| Tropical Meteorology      address@hidden   |
>> >|                                              |
>> >| Dept of Geography   Office: 1155 Derby Hall  |
>> >| 1036 Derby Hall     Phone : (614) 292-2704   |
>> >| Columbus, OH 43210  Fax   : (614) 292-6213   |
>> >================================================
>> >
>> 
>> Chris, 
>> I ahven't seen this behavior here. It could happen if you had a script
>> setting the colortable for another product displaying to the X server.
>> It could also be triggered in adding a new frame to the loop in auto update.
>> I'll have to explore.
>> 
>> Steve Chiswell
>> ****************************************************************************
>> Unidata User Support                                    UCAR Unidata Program
>> (303)497-8644                                                  P.O. Box 3000
>> address@hidden                                   Boulder, CO 80307
>> ----------------------------------------------------------------------------
>> Unidata WWW Service                        http://www.unidata.ucar.edu/     
>> ****************************************************************************
>> 
>
>From address@hidden Tue Sep 26 11:35:57 2000
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> 94.100])
>       by unidata.ucar.edu (UCAR/Unidata) with ESMTP id e8QHZub04924
>       for <address@hidden>; Tue, 26 Sep 2000 11:35:57 -0600 (MDT)
>Organization: UCAR/Unidata
>Keywords: 200009261735.e8QHZub04924
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>Date: Tue, 26 Sep 2000 13:38:33 -0400 (EDT)
>From: address@hidden (Chris Hennon)
>X-Sender: chennon@scooby
>To: Unidata Support <address@hidden>
>Subject: Re: 20000926: GARP/NSAT color enhancement bug? 
>In-Reply-To: <address@hidden>
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>
>Steve -
>
>I've done a little bit more testing here.  It doesn't appear to matter if
>the auto update is on or not.  Also, it tries to enhance things when I
>have a visible loop running as well.  I loaded up a 10 hour IR loop (no
>enhancement) and ran it.  It looped normally for about 10 minutes, then
>suddenly started to enhance the image even though I didn't touch anything. 
>
>Now, I do run some satellite scripts from the cron at 30 and 45 past the
>hour for our webpage.  It is possible that they may be interfering with
>GARP. I don't know.  Those scripts are run from the display console.
>
>Chris
>
>================================================
>| Chris Hennon        Ohio State University   |
>| Tropical Meteorology      address@hidden   |
>|                                              |
>| Dept of Geography   Office: 1155 Derby Hall  |
>| 1036 Derby Hall     Phone : (614) 292-2704   |
>| Columbus, OH 43210  Fax   : (614) 292-6213   |
>================================================
>
>On Tue, 26 Sep 2000, Unidata Support wrote:
>
>> >From: address@hidden (Chris Hennon)
>> >Organization: UCAR/Unidata
>> >Keywords: 200009261704.e8QH4Gb03789
>> 
>> >Steve -
>> >
>> >Since I have installed patch level 17, I have noticed some new behavior
>> >when you loop IR satellite images in GARP and NSAT.  When I select a color
>> >enhancement, the loop runs for about 45 seconds with the enhancement, then
>> >automatically switches to a different enhancement scheme.  This goes on
>> >indefinitely.  Is there a switch to turn this off?  Thanks.
>> >
>> >Chris
>> >
>> >================================================
>> >| Chris Hennon             Ohio State University   |
>> >| Tropical Meteorology      address@hidden   |
>> >|                                              |
>> >| Dept of Geography   Office: 1155 Derby Hall  |
>> >| 1036 Derby Hall     Phone : (614) 292-2704   |
>> >| Columbus, OH 43210  Fax   : (614) 292-6213   |
>> >================================================
>> >
>> 
>> Chris, 
>> I ahven't seen this behavior here. It could happen if you had a script
>> setting the colortable for another product displaying to the X server.
>> It could also be triggered in adding a new frame to the loop in auto update.
>> I'll have to explore.
>> 
>> Steve Chiswell
>> ****************************************************************************
>> Unidata User Support                                    UCAR Unidata Program
>> (303)497-8644                                                  P.O. Box 3000
>> address@hidden                                   Boulder, CO 80307
>> ----------------------------------------------------------------------------
>> Unidata WWW Service                        http://www.unidata.ucar.edu/     
>> ****************************************************************************
>> 
>