[gradsusr] Regrid Data with GRADS

[Jose Augusto Paixão Veiga]

Hi Paula,

You can play with this piece of GS program that I successfully use without problems.

 'reinit'
* Data to be regrided into the defalt data (corse resolution)
'open uvtwg_ncep.ctl'
* Default data (high resolution)
'open uvtwg_ecmwf.ctl'

'set dfile 2'
'set x 1 240'
'set y 1 121'

'variavel=lterp(u.1,u.2)'
'set gxout fwrite'
'set fwrite uvtwg_new.bin'

'd variavel'

'disable fwrite'

Shortly, the program reads two CTL files with different resolution data and write one binary file in the same space-grid lat-lon from the default data, in this case ECMWF. I've never tried to regrid data from non-regular space grid on y direction (as in the case of a T126), but may be it works with this program.

Cheers!
 

José Augusto P. Veiga, 

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On Jan 27, 2012, at 11:27 AM, Ana Paula Martins do Amaral Cunha wrote:

> Hi,
> 
> I want to regrid my data and I am using GrADS Version 2.0.a9 (not opengrads in
> windows). I have tried
> "regrid(uwnd,2.5,2.5)"   ,   " regrid2(uwnd,2.5,2.5)"       and
>  "re(uwnd,2.5,2.5)" .
> 
> However error messages were displayed and said 'regrid' not a variable  
> or function name , 'regrid2' not a variable or function name and 're'  
> not a variable or function name  respectively
> 
> Does anyone have any ideas on how to regrid data using GrADS and give me some
> suggestions? Which command should I use?
> Your suggestion is highly appreciated.
> 
> Thanks
> 
> 
> 
> *****************************************************************
> ***  Ana Paula M A Cunha
> ***  Grupo de Estudos Ambientais Integrados (GEAI)
> ***  Instituto Nacional de Pesquisas Espaciais - INPE
> ***  São José dos Campos /SP
> ***  fones: 12-32087134 / 12-91973808
> *****************************************************************
> 
> 
> 
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