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20040324: LDM6.0.14 pqact.conf question


The Unidata NEXRAD data stream has LDM product identifiers with the
/pPILs following the WMO identifier. This is done by the IDD ingestion software
to identify the different NEXRAD products that use the same WMO id to
transmit different products.

Your source for the data is apparently not providing a product identifier
that adds the PIL, so the examples you find showing its use will not
be valid for your application. You either need to have that done at the
ingestion point, or pipe your products to a program which can access the
PIL line of the Level III radar product for file name identification.

Steve Chiswell
Unidata User SUpport

On Wed, 24 Mar 2004, Josh Sholes wrote:

> Recently, my site was attempting to configure LDM to get data for the GEMPAK
> decoder package.
> We added the lines from the examples, specifically:
> ANY   ^SDUS[2357]. .... ([0-3][0-9])([0-2][0-9])([0-6][0-9]).*/p(...)(...)
>       FILE    -close  data/gempak/nexrad/NIDS/\5/\4/\4_(\1:yyyy)(\1:mm)\1_\2\3
> to the pqact.conf file, and got no data at all in the appropriate directories.
> Amending the lines to
> ANY   ^SDUS[2357]. .... ([0-3][0-9])([0-2][0-9])([0-6][0-9])
>       FILE    -close  data/gempak/nexrad/NIDS/(\1:yyyy)(\1:mm)\1_\2\3
> got lots of radar data, but not seperated in the way GEMPAK expects.  Since
> then, we have noticed that none of our pqact.conf lines which include the
> "/p" construction (which, if I'm not mistaken, is supposed to tell pqact to
> jump down and start reading the second line of the header) seem to work at
> all.  Is this a known problem, a change in syntax from when the examples were
> written, or what?
> Thanks for any help you can give.
> --
> Josh Sholes
> ZedX Inc.
> address@hidden

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