[gradsusr] Unknown GRIB2 index version number 3

[Wesley Ebisuzaki - NOAA Federal]

Greg,

"**** FATAL ERROR: rd_grib2_msg_seq_file, missing end section ('7777') ****"

is a wgrib2 error message.  You should be able to duplicate the message by

    wgrib2 (filename)

Here is where the error message occurs:

   1. find header of grib message
   2. The header has the length of the grib message, read the entire
message into memory
   3.  The last 4 bytes of the grib message has to be "7777" otherwise you
get the
         "missing end section" error message.

Wesley


On Thu, Jan 21, 2016 at 1:19 AM, Gregory Clarke <gsclarke at hotmail.com>
wrote:

> Hello Jennifer and Wesley,
>
> Many thanks to you each for your help.
>
> I have the following feedback:
>
> Jennifer - your solution does not work. I did substitute the "-big" option
> for "-old". I mapped successfully but when GrADS runs, I get the following
> error message:
>
> "
>
> *Open Error:  Can't open Station/Index map file
> 201601210000_arw_wrfout_d01.idx   The data file was not opened. No Files
> Open*"
>
> Wesley - your solution does work and I can plot some data, but I am
> getting the following error as well, but suspect a bad GriB file based on
> an old thread in the GRADS forum about transferring the file via FTP as
> ASCII not BINARY. As my file is locally generated, this is not the answer:
>
> "**** FATAL ERROR: rd_grib2_msg_seq_file, missing end section ('7777')
> ****"
>
> Kind Regards,
> Greg
>
> ------------------------------
> Date: Wed, 13 Jan 2016 11:22:09 -0500
> From: wesley.ebisuzaki at noaa.gov
> To: gradsusr at gradsusr.org
> Subject: Re: [gradsusr] Unknown GRIB2 index version number 3
>
> Greg,
>
>   You can also try using alt_g2ctl/alt_gmp.
>
>           http://www.cpc.ncep.noaa.gov/products/wesley/alt_g2ctl_gmp.html
>
> Wesley
>
> On Wed, Jan 13, 2016 at 8:12 AM, Jennifer M Adams <jadams21 at gmu.edu>
> wrote:
>
> Hi, Greg —
> If you get the recent build of GrADS (2.1.a2+) you can use the “-old”
> option with gribmap downgrade the index version number so it can be used
> with older versions of GrADS. Have a look at the usage notes in
> http://cola.gmu.edu/grads/gadoc/gradutilgribmap.html.
> —Jennifer
>
> On Jan 13, 2016, at 1:22 AM, Gregory Clarke <gsclarke at hotmail.com> wrote:
>
> Hello GrADS Users, Developers and GRIB2 Experts,
>
> I am running GrADS 2.0.2 which is the last releases that supports the
> widget options in the scripting language.
>
> However, when I try to open the GrADS file generated by the latest version
> of UPP in the WRF-UEMS release from SOO/STRC, the above error message
> occurs.
>
> I have tested all the releases of GrADS from this version onward and the
> error disappears with version 2.1.a2 or higher.
>
> Does anybody know if there is a work-around for this as I cannot move away
> from GrADS 2.0.2 until the option to choose the graphics engine is
> introduced so I can maintain my widget functionality.
>
> Many thanks.
>
> Best Regards,
> Greg
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