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Re: 20040912: decoding CPTEC's grib with dcgrib2

Waldenio,

The PDS table version number 254 you are using will be used
to lookup a wmogrib254.tbl to define parameters 1-127 and a
cptecgrib254.tbl for parameters 128-255.

You can create a link from wmogrib128.tbl to wmogrib254.tbl
if these are the same. GRIB allows the table version to be defined
internal to the data so that the data format is extensible.

Steve Chiswell
Unidata User Support




On Fri, 2004-09-17 at 12:01, Waldenio Almeida wrote:
> Hi Steve !
> 
> Steve Chiswell wrote:
> > 
> > Waldenio,
> > 
> > I believe that your error is that you are using a non-rectanglular
> > grid representation in your GRIB GDS (GDS octet 6).
> > The number 4 that you have is a gaussian grid, which GEMPAK cannot
> > handle, and would require interpolation to a regularly spaced grid.
> > 
> > Steve Chiswell
> >
> 
> Thanks for the help. I will look for the space grid conversion.
> 
> So I tried do the same with the CPTEC's Eta model, that already is in
> rectangular grid. I get these erros ! :-(
> 
> "The table wmogrib254.tbl cannot be opened"
> 
> this table is equal the wmo tables 128, 129 and 130 ? why exists so
> many ?
> 
> Many Thanks,
> Waldenio.