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20000912: Removal of delta-encoded images from UW data stream (cont.)

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  • Subject: 20000912: Removal of delta-encoded images from UW data stream (cont.)
  • Date: Tue, 12 Sep 2000 15:08:37 -0600
>From: address@hidden (Chris Hennon)
>Organization: Ohio State
>Keywords: 200009111601.e8BG1gb11030 ldm-mcidas

Chris,

>Here's my pqact.conf entry that works for CIMSS sounder imagery:
>
># CIMSS Cloud Top Pressure - McIDAS product code CA
>MCIDAS  ^pnga2area Q. CA .... (.*) (.*) (.*) (........) (....)
>        PIPE    -close  /usr/local/ldm/decoders/pnga2area
>        -a /usr/local/ldm/ldm-mcidas-7.6.3/etc/SATANNOT
>        -b /usr/local/ldm/ldm-mcidas-7.6.3/etc/SATBAND
>        data/goes_sounder/\3/ctp/CTP_\4_\5

OK, this looks acceptable for the Cloud Top Pressure CIMSS product.

>Here is my pqact.conf entry that doesn't work (i.e. nothing is written to
>the directory I specified) for Unidata/Wisconsin GOES imagery:
>
>#  Regular Unidata-Wisconsin Imagery
>MCIDAS  ^pnga2area Q1 .. .... (.*) (.*) (.*) (........) (....)
>        PIPE    -close  /usr/local/ldm/decoders/pnga2area
>        -a /usr/local/ldm/ldm-mcidas-7.6.3/etc/SATANNOT
>        -b /usr/local/ldm/ldm-mcidas-7.6.3/etc/SATBAND
>        data/images/test/\3/\4_\5

This looks OK as well assuming that the directory data/images/test is
writable by the user running the LDM.  How about specifying that
you want verbose logging so we can what pnga2area has to say for
itself:

#  Regular Unidata-Wisconsin Imagery
MCIDAS  ^pnga2area Q1 .. .... (.*) (.*) (.*) (........) (....)
        PIPE    -close  /usr/local/ldm/decoders/pnga2area
        -a /usr/local/ldm/ldm-mcidas-7.6.3/etc/SATANNOT
        -b /usr/local/ldm/ldm-mcidas-7.6.3/etc/SATBAND
        -vxl /usr/local/ldm/logs/satarea.log
        data/images/test/\3/\4_\5

>Here is my pqact.conf entry for LWTOA3:
>
>MCIDAS  ^LWTOA3 (...) .*
>        PIPE    -close
>        /usr/local/ldm/decoders/lwtoa3 -d /usr/local/ldm/data/satarea -l
>/usr/local/ldm/logs/satarea.log -v

I used the logging location from this in the suggestion to add logging to
the pnga2area invocation.

>I just tried dumping the images into a test directory but nothing gets
>written there.  Let me know if you need any more information.

We need to know if pnga2area is exiting early.  If it is, you would see
'broken pipe' messages in ~ldm/logs/ldmd.log.  If that is not happening,
I will be very suprised to say the least since a notifyme to your
machine shows that you are receiving the PNG compressed GOES images
from the Unidata-Wisconsin stream:

notifyme -vxl- -o 3600 -f MCIDAS -h twister.sbs.ohio-state.edu
Sep 12 21:05:23 notifyme[15060]: Starting Up: twister.sbs.ohio-state.edu: 
20000912200523.902 TS_ENDT {{MCIDAS,  ".*"}}
        NOTIFYME(twister.sbs.ohio-state.edu) returns OK
Sep 12 21:05:23 notifyme[15060]: NOTIFYME(twister.sbs.ohio-state.edu): OK
Sep 12 21:05:25 notifyme[15060]: d540b89b422cf7635a02ff7b1f2798f4   466648 
20000912203155.534  MCIDAS 000  LWTOA3 160 DIALPROD=UA   256 203152
Sep 12 21:05:25 notifyme[15060]: c51ea02121d625a6d860dd7e50f4ecb3   347850 
20000912203206.137  MCIDAS 000  pnga2area Q1 UA 160 GOES-8_IMG 0.65um 1km 
20000912 2015
Sep 12 21:05:25 notifyme[15060]: fa343961b6514a95883c619e516b206b   444332 
20000912203409.543  MCIDAS 000  LWTOA3 60 DIALPROD=UC   256 203357
Sep 12 21:05:25 notifyme[15060]: 2a7bde507a7b799928fe7238feef4fa9   338598 
20000912203450.964  MCIDAS 000  pnga2area Q1 UC 60 GOES-8_IMG 0.65um 1km 
20000912 2015
Sep 12 21:05:25 notifyme[15060]: bccd66f8f09a895a433086f085d40caf  1473104 
20000912203548.014  MCIDAS 000  LWTOA3 150 DIALPROD=UI   256 203527

After we verify that there are 'broken pipe' messages in ldmd.log, we need
to examine verbose pnga2area log output to find out why it is exiting early.

Tom