Unsupported grid type: generic

Dear CDO users,

I am trying to use sellonlatbox command over a nc file which has got two different grid id (lonlat and generic). while using the same command it gives the error

cdo -sellonlatbox,73.0,82.0,18.0,28.0 -setgrid,grid.txt olr.day.mean_jjas_79_05.nc olr.day.mean_jjas_79_05_new.nc
cdo sellonlatbox: Started child process "setgrid,grid.txt olr.day.mean_jjas_79_05.nc (pipe1.1)".
cdo sellonlatbox: Unsupported grid type: generic

cdo sellonlatbox (Abort): Unsupported grid type!

even I am not succeeding in changing the grid type (generic to lonlat) to perform the sellonlat operation. Please help me in this regard.
the output for dump and griddes has been attached herewith for the reference.

Download all files

dump.txt (2.35 KB) dump.txt
grid.txt (357 Bytes) grid.txt

Replies (2)

RE: Unsupported grid type: generic - Added by Uwe Schulzweida over 9 years ago

Have a look at the sinfon output:

   File format : netCDF
    -1 : Institut Source   Ttype    Levels Num    Points Num Dtype : Parameter name
     1 : unknown  unknown  instant       1   1     10512   1  I16  : olr           
     2 : unknown  unknown  instant       1   1         7   2  I16  : info          
   Grid coordinates :
     1 : lonlat                   : points=10512 (144x73)
                              lon : ?? to ?? degrees_east
                              lat : ?? to ?? degrees_north
     2 : generic                  : points=7
   Vertical coordinates :
     1 : surface                  : levels=1
...

CDO found two variables (olr and info). The variable info has 7 gridpoints without any grid information. Such a variable can't be processed with sellonlatbox. You have to select the variable olr:

cdo -sellonlatbox,73.0,82.0,18.0,28.0 -selname,olr olr.day.mean_jjas_79_05.nc olr.day.mean_jjas_79_05_new.nc

RE: Unsupported grid type: generic - Added by praveen rai over 9 years ago

Thank you so much for your help Uwe.

Cheers

Praveen

(1-2/2)

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