20030602: 20030603: compressed NIMAGE images in GEMPAK?

Pete,

GEMPAK can read my PNG compressed GINI products (eg NEXRAD mosaics
and NIMAGE products). While I have been testing my ingest code
for the new zlib compressed products, I had turned off the ingest code that
modified the GINI header to denote products I had compressed with PNG
since I needed to compare the duplicate NOAAPORT transmitted products.

This is now back on and you should be able to display the GINI products
direct from their PNG format.

Steve Chiswell







>From: Pete Pokrandt <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200306030231.h532VHLd013651

>
>In a previous message to me, you wrote: 
>
> >>From: address@hidden (Pete Pokrandt)
> >>Organization: University of Wisconsin
> >>Keywords: 200305211451.h4LEpALd008688 IDD NIMAGE
> >
> >Hi Pete,
> >
> >>Could we begin feeding (and relaying if desired) this feed from
> >>thelma or somewhere? I spoke with Jerry R down at SSEC and he
> >>said that they receive the satellite channels on their NOAAPORT
> >>receiver but are not ingesting them at all.
> >
> >Yes.  I just added an allow for any machine from aos.wisc.edu for
> >NIMAGE from papagayo.unl.edu.  If you want to uncompress these images
> >from the PNG format that we compress then into, you will need to setup
> >ldm-mcidas pngg2gini actions in your ~ldm/etc/pqact.conf file.  The
> >reason I say _if_ is because GEMPAK can handle the images in their PNG
> >compressed format.
>
>Tom,
>
>I just turned on the NIMAGE feed and am getting the data just fine.
>However, I'm not sure what needs to be done to view them correctly.
>
>I'm currently just saving them straight off the stream with a 'FILE'
>command, i.e.
>
>NIMAGE  TIGE01 .... ([0-3][0-9])([0-2][0-9])([0-5][0-9])        FILE    -close
>  /data/gemdata/sat/EAST-CONUS/1km/VIS/VIS_(\1:yy)(\1:mm)\1_\2\3
>
>The files show up ok, and those particular files are like 12-14 Mb each, which
>  seems
>right if they are 26Mb uncompressed.
>
>However, when I use GARP or even gpmap or wxp to view the images, they have
>the right map apparently, and show up with a correct date/time/satellite
>type info, but the image is just static (like an empty tv channel) on the
>top half of the image.
>
>I'm sure this is something stupid, like a table setting or some
>option I'm missing, any ideas or help you can offer?  I'm using
>gempak 5.6.j, so if should be able to handle the PNG compressed
>images I'd think.
>
>Thanks!  
>
>Pete
>
>P.S. Was nice to meet you last week at the CONDUIT meeting. And 
>tasty microbrew t'boot!
>
>--
>+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+
>^ Pete Pokrandt                    V 1447  AOSS Bldg  1225 W Dayton St^
>^ Systems Programmer               V Madison,         WI     53706    ^
>^                                  V      address@hidden       ^
>^ Dept of Atmos & Oceanic Sciences V (608) 262-3086 (Phone/voicemail) ^
>^ University of Wisconsin-Madison  V       262-0166 (Fax)             ^
><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+
>
>From address@hidden Mon Jun  2 21:16:48 2003
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>Message-Id: <address@hidden>
>To: Unidata Support <address@hidden>
>cc: address@hidden, address@hidden
>Subject: Re: 20030521: NIMAGE feed? 
>In-reply-to: Your message of "Wed, 21 May 2003 09:17:15 MDT."
>             <address@hidden> 
>Date: Mon, 02 Jun 2003 22:16:47 -0500
>From: Pete Pokrandt <address@hidden>
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>
>
>Tom,
>
>Piping the images through pngg2gini works, I'm just curious why
>gempak doesn't seem to be able to handle the png encoded images.
>
>Pete
>
>--
>+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+
>^ Pete Pokrandt                    V 1447  AOSS Bldg  1225 W Dayton St^
>^ Systems Programmer               V Madison,         WI     53706    ^
>^                                  V      address@hidden       ^
>^ Dept of Atmos & Oceanic Sciences V (608) 262-3086 (Phone/voicemail) ^
>^ University of Wisconsin-Madison  V       262-0166 (Fax)             ^
><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+
>