Re: [Fwd: Re: Do y'all have a suggestion for Ed?]

  • To: Rick Grubin <grubin@xxxxxxxx>
  • Subject: Re: [Fwd: Re: Do y'all have a suggestion for Ed?]
  • From: Jeff Whitaker <jswhit@xxxxxxxxxxx>
  • Date: Wed, 03 May 2006 11:16:19 -0600
Rick Grubin wrote:
Regarding g2clib, I've been working with it and found its API reasonably easy to use for decoding, at least when compared to the ECMWF grib_api code. The grib_api code, however, does have a nice built-in parser for reading codetables and extracting information at runtime.

-------- Original Message --------
Subject: Re: Do y'all have a suggestion for Ed?
Date: Mon, 16 Jan 2006 18:44:07 -0000
From: Shah, Saurin B <saurin.shah@xxxxxxxxxxxx>
Reply-To: saurin.shah@xxxxxxxxxxxx
To: Gerry Creager N5JXS <gerry.creager@xxxxxxxx>, Sastry, Srikanth <sastry@xxxxxxxxxxxx>, Kaustav Ghoshal <kghoshal@xxxxxxxx>, Shah, Saurin Bipin <saurin782@xxxxxxxxxxxx>

I have used g2clib for GRIB2 files and it is really good. It has routines to write all 8 sections of a GRIB2 file, and also it has routines to decode a
GRIB2 file. The code is well documented too.

The library can be found at
http://oceanlab.rsmas.miami.edu/explorer/SEACOOS/v2/src/degrib/src/grib2lib/g2clib-1.0.2/

Perhaps I'm missing something obvious (woudn't be the first time), but it seems that g2clib does not offer this capability (or does it, and I just don't see it?). In looking at other GRIB2 decoders that make use of g2clib, it seems that those developers had to write their own methods for parsing/extracting info from codetables. True? If so, is there anything folks can share (preferably C code -- I know of Jeff Whitaker's python work and the Java decoder) that, given the info extracted from g2clib's data structure about a GRIB2 file, can decode text-based codetables?

Rick: g2clib does a nice job of decoding and encoding, but you are right - it doesn't provide any way of matching the numeric code with the associated text attributes from the WMO manual.

-Jeff

--
Jeffrey S. Whitaker         Phone  : (303)497-6313
Meteorologist               FAX    : (303)497-6449
NOAA/OAR/PSD  R/PSD1        Email  : Jeffrey.S.Whitaker@xxxxxxxx
325 Broadway                Office : Skaggs Research Cntr 1D-124
Boulder, CO, USA 80303-3328 Web    : http://tinyurl.com/5telg

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