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20040204: LDM ingesting EMWIN data

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: 20040204: LDM ingesting EMWIN data
  • Date: Wed, 04 Feb 2004 11:03:30 -0700
Michael,

> To: address@hidden
> From: "Michael Davis" <address@hidden>
> Subject: LDM and EMWIN
> Organization: National Weather Service
> Keywords: 200402041634.i14GYkp1021643

The above message contained the following:

> Good Morning!  I am the Information Technology Officer here at the NWS
> in Nashville, TN.  We use LDM in several cases here at our office.

Cool!

> I am
> emailing you to ask a question regarding the use of LDM to capture EMWIN
> feeds via serial port/network.  Can this be done from either method?  I
> have been doing alot of research and have not come up with the answer
> yet.

In the LDM world, "capturing" a data feed means that an LDM ingester
process obtains the data somehow (e.g., from a serial port) identifies
the relevant data-products and inserts those data-products into the LDM
product-queue.  More information can be found at

    
http://my.unidata.ucar.edu/content/software/ldm/ldm-6.0.14/basics/programs.html#ingesters
    
http://my.unidata.ucar.edu/content/software/ldm/ldm-6.0.14/basics/generic-LDM.html

The pqing(1) program, which comes with the LDM distribution, is
an example of an LDM ingester.  It is designed to be modified, as
necessary, to ingest a new source of data-products.

Looking over the contents of the EMWIN data feed, however, I can't help
but wonder why you would want to ingest it.  The 9600 bps EMWIN feed
doesn't appear to contain anything that isn't already on the NOAAPORT
feeds -- which, as a WFO, you should already be receiving.

> I look forward to hearing from you.
> 
> 
> -- 
> Michael E. Davis - address@hidden
> Information Technology Professional 
> National Weather Service, Nashville, TN 
> (615) 754-8501 Ext 230 - Office 
> (615) 754-8503 - Fax

Regards,
Steve Emmerson
LDM Developer