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17.1 GEMPAK Decoders: GEMPAK DC-style decoders

Decoding Data into GEMPAK Format

Running the NAWIPS/GEMPAK DC-style decoders

 As stated previously, the DC-style decoders can be run interactively from the command line, or they can be run in conjunction with the LDM software.

To run the programs interactively, you must provide the raw data to be decoded as standard input. (That means use the "<" redirect in symbol to pipe the raw data into the decoder). You must also use the -c option to set the current time. Using the DCMETR decoder as an example: 

  dcmetr -c YYMMDD/HHNN -b 24 -d logfile YYMMDD_sao.gem < input_file

You can also configure the DC-style decoders to run automatically upon receipt of raw data from the LDM. To do this, you must configure the pattern action file "pqact.conf" that is included with the LDM software. Here is a complete set of sample pqact.conf with pattern actions for all the DC-style decoders.

 


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