Lats4d: grib related issues

[Arlindo da Silva]

On 3/25/06, clfang_pla at sohu.com <clfang_pla at sohu.com> wrote:

>  > Dear da Silva,
>
> > Thank you for your great contributions to lats4d.gs ,well,would I ask
> you some questions ,which was
>
> encountered during my using lats4d.gs?
>
> well,I intend to convert a grads format data (normal binary data) with the
> help of lats4d.gs ,
>
> but after the converting , I use the function grib2ctl.pl to extract the
> ctl file from the newly
>
> created grib file,then some warnings come up :(below)
>

[snip]

Two issues here:

1) No need to use grib2ctl;  the option "-format grads_grib" should generate
a .ctl for you as well.

2) The creation of NCEP or ECMWF compliant grib files require that you
specify a proper LATS parameter table.  The default is to create something
on the fly which does not conform to NCEP or any other center conventions.
For details on the creation of this table, consult the LAT S documentation
at PCMDI: http://www-pcmdi.llnl.gov/software/lats/. Only use the
automatically generated table is NCEP compatibility is not a requirement,
say, to use lats4d as a quick lossy compression utility.

  Good Luck,

      Arlindo

--
Arlindo da Silva
dasilva at alum.mit.edu
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