[gradsusr] problem in displaying variables

[Ricardo Hallak]

Ok, T.,

you will have to download the FNL GRIB 1 file again. Don't do any conversion with it. The FNL files can be directly seen in GrADS. Your .ctl file is ok.
I don't know what kind of "conversion" you did, but certainly it is not necessary, since the fnl files, with that _c as suffix, are already in GRIB 1 format.

All you have to do after downloading the FNL file is to run gribmap again:
gribmap -i <yours>.ctl

Try this, please, and let us know if it works or not.

Greetings,
Ricardo

On Thu, 28 Feb 2013 02:23:42 +0000, T. haghroosta wrote
> Dear Ricardo,
>  
> Yes, I did as like as you explained. I am in doubt, maybe I have to do it again. I have a question; the source fnl file has a size of 23 MB, but after converting it to a ctl and an idx file, each of them has a size of just seven kb, is it correct and acceptable? I think maybe the converting process has not been done correctly.
> 
> Regards,
>  
> T. 
> 
> > 
> > Hi People (Jeff, Saulo, T., others),
> > 
> > T., please, could you check your .ctl file for the dset line?
> > In the q file command, the output for the line:
> > 
> > binary: E:/blablabla
> > 
> > should be the name of the binary file (that is, the grib 1 file: fnl_20081112_18_00_c), not the .idx name file.
> > 
> > The .idx has to be created with the gribmap command, outside the GrADS and before running GrADS:
> > 
> > gribmap -i filename.ctl
> > ?
> > This command !will CREATE an index file. The name of this index file is set in your .ctl file, as follow in the example below:
> > 
> > dset fnl_20081112_18_00_c
> > index anyname.idx
> > title Test
> > etc ...
> > 
> > After getting this anyname.idx index file, you can open the .ctl file in GrADS and dysplay any variable.
> > 
> > T., how did you get your .ctl file for this? FNL grib file?
> > 
> > Ricardo
> > 
> > On Wed, 27 Feb 2013 07:47:18 +0000, T. haghroosta wrote
> > > Dear Jeff,?
> > > ?
> > > The problem is this that I can open the .ctl file but I cannot display any variable inside the q file list ( command "d variable").
> > > ?
> > > Dear Saulo,
> > > 
> > > I renamed the control file as same name as .idx, but the problem was not solved. I got these errors : 
> > > GRIB I/O error: Bit map I/O
> > > display error: invalid expression
> > > ?
> > > Don!'t you think; it is related to converting process from fnl type to a control file and an idx file?
> > > ?
> > > Dear manu,
> > > ?
> > > Of course I did as like you said, but it didn't work.
> > > ?
> > > Regards?,
> > > ?
> > > T.
> > 
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Ricardo Hallak

Departamento de Ciências Atmosféricas (ACA) 
Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG) 
Universidade de São Paulo (USP) 
Rua do Matão, 1226 - Cidade Universitária - São Paulo SP 05508-900 
Phone.: +55 (11) 3091-2850; 3091-4703 
Fax: +55 (11) 3091-4714

 
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