remaplaf generic grid
Added by Anne Moree 11 months ago
Hello,
I am trying to regrid using remaplaf without succes. I think the attributes are unclear to CDO, but I do not know what it is missing.
The attached test file and its grid should have the info to make it possible to regrid.
cdo -L -remaplaf,r360x180 -setgrid,grid.nc test4.nc test5.nc
cdo(1) setgrid: Process started
cdo remaplaf (Abort): Unsupported generic coordinates (Variable: templvl)!
terminate called without an active exception
Aborted (core dumped)
What could I do?
Thank you in advance for your help,
Anne
Replies (3)
RE: remaplaf generic grid - Added by Ralf Mueller 11 months ago
hi Anne!
The problem is that the coordinates for the data variable in 'test4.nc' need to be given in the coordinates attribute of the variable. Without this it's not clear, which of all the coordinates are the correct ones. The link between coordinates and their boundaries is not CF-conform IMO.
Possible fix:
- select the needed coordinates (here you have to decide the correct ones of course):
cdo -setattribute,plon@axis='X',plat@axis='Y',plon@standard_name='longitude',plat@standard_name='latitude' -selname,plon,plat,pclon,pclat grid.nc pgrid.nc
- bring coordinates (which CDO at this moment regards as data variables) together with the original data:
cdo merge test4.nc pgrid.nc ptest4.nc
- Link coordinate variables to the data variables and set the correct CF-conform attribute to the cell boundaries (needed to compute cell areas):
cdo -setattribute,plon@bounds='pclon',plat@bounds='pclat',templvl@coordinates="plon plat" ptest4.nc pdata.nc
- Perform the remapping:
cdo remaplaf,global_1 pdata.nc pdata_lonlat.nc
hth
ralf
RE: remaplaf generic grid - Added by Anne Moree 11 months ago
Dear Ralf,
Thank you so much, this works exactly as wanted.
Cheers,
Anne