Re: Re: GRIB PDS length

From: Dave Brown (dbrown AT XXXXXX)
Date: Tue Dec 23 2003 - 15:21:22 MST

  • Next message: Takeshi Enomoto: "Re: ShadeLtContour and ShadeLtGtContour"

    Hi,
    NCL's GRIB reading code was updated on 10/8/2003 to eliminate any PDS
    size limitation. You should not have this problem with the most recent
    version of NCL.
     -dave

    On Tue, 23 Dec 2003, Mary Haley wrote:

    >
    > > I need to read GRIB files that have PDS lengths of 88 bytes. NCL cannot read
    > > them, giving a "Corrupted record" error message. wgrib can read the files.
    > > NCL can also read the files if I reduce the PDS length to 80 bytes or less.
    > > Can NCL be modified to handle longer PDS sections? The GRIB spec allows the
    > > PDS section to be quite long, 2^24-1. Thank you.
    > >
    > > Richard Carpenter
    > >
    >
    > Hi Richard,
    >
    > There have been lots of updates made to the GRIB reader in NCL this
    > year. If your version of NCL is version 4.2.0.a027 or older, then you
    > may not have access to these updates, some of which might solve the
    > above problem. (The NCL version number is echoed every time you run
    > NCL.)
    >
    > If you are running the latest version of NCL and yet still having
    > problems, then if you can email me the GRIB file, or put it on an
    > anonymous ftp/web site, then we will be happy to take a look at it.
    >
    > Cheers,
    >
    > --Mary
    >
    > -------------------------------------------------
    > Mary Haley haley AT ucar.edu
    > NCAR/SCD/VETS 303-497-1254 (voice)
    > 1850 Table Mesa Dr 303-497-1804 (fax)
    > Boulder, CO 80305
    > -------------------------------------------------
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    >

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