[gradsusr] cdo seltimestep has removed lon and lat from my timeseries

[Andrew Friedman]

Hi Adam,

You can open the file by creating a descriptor file and using xdfopen following instructions here:
http://www.iges.org/grads/gadoc/SDFdescriptorfile.html

You may also want to look at the cdo documentation for information on preserving the spatial dimension information:
You should write https://code.zmaw.de/projects/cdo

Andrew

http://www.iges.org/grads/gadoc/SDFdescriptorfile.html

On May 22, 2014, at 1:01 PM, Adam Bamba <adambamba_2000 at yahoo.com> wrote:

> Dear grads users,
> I have a monthly precipitation data from CRU covering the period 1901-2006.
> I have selected a period within the time series using cdo as follow
> example: cdo seltimestep,10/130 cru.nc output.nc
> 
> when I try to open the output.nc with grads I have this message
> scanning self-describing file:  output.nc
> gadsdf: SDF file has no discernable X coordinate.
> 
> when I check with: 
> ncdump -c output.nc
> I have something like that:
> 
> netcdf output {
> dimensions:
>         x = 194 ;
>         y = 201 ;
>         time = UNLIMITED ; // (120 currently)
>         nb2 = 2 ;
> .
> .
> .
> 
> data:
> 
>  time = 29599, 29630, 29658, 29689, 29719, 29750, 29780, 29811, 29842, 29872, 
>     29903, 29933, 29964, 29995, 30023, 30054, 30084, 30115, 30145, 30176, 
>     30207, 30237, 30268, 30298, 30329.....
> }
> 
> I note that the longitude and latitude don't appear but the time appears. It is like the operation on cdo has
> removed the longitude and latitude.
> 
> NB: I can open the original file (the one with the complet time series) with grads without any problem.
> 
> Can anybody help me, thanks in advance.
> 
> 
> Adam Bamba
> 
> 
> 
>  
>                                  
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