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20000214: dcnldn

>From: Frank Colby <address@hidden>
>Organization: .
>Keywords: 200002141831.LAA22323

>Steve and/or Robb,
>
>I'm trying to run the dcnldn decoder, and not having much luck.  I think
>the problem is something I might be able to solve, but I need help.  I
>am receiving the nldn data, and putting it into files without any
>problems, although I don't know what the format of the .nldn files is,
>other than it's something I can't read with more.  I would like to
>decode the data into gempak files, and have put the decoder statement
>copied from the ldm web page, suitably modified for our file structure.
>I did get an entry into our log file, but all it indicates is that the
>decoder started, found no data, and quit.  That was more than 1 hour
>ago.
>
>What I don't understand is what the various switches do in the decoder
>action.  I have tried dcnldn -h, but this doesn't give me anything, and
>I don't seem to have any man pages for it.  I tried searching the
>searchable indices on the web, but can't find anything there either.  I
>found the help files, but the switch details aren't shown there either.
>What am I missing?
>
>Frank
>
>

Frank,

On Jan 29, SUNY-Albany changed the naming of the NLDN products so the
NLDN entry on the tutorial was wrong.  I just updated that. Previously they
were named YYJJJHHMMSS, and now are CCYYJJJHHMMSS.

The file entry can just be:
NLDN    ^.*
        dcnldn....yadda-yadda

Sorry about that... 

The decoder will create Gempak ship format files that can be viewed
with ltglist, ltgmap or garp as I outlined last week.

Steve Chiswell