Masking land values
Added by François Roberge over 6 years ago
Hi all,
I need to mask all values over nan. I have a land-sea mask that is set to 0 over the ocean and to 1 over the land. I have seen commands like this to mask the ocean :
cdo div data.nc lsm.nc masked_data.nc
However, this doesn't work in the case if I want to mask the land. I would need to "invert" the mask.
How would you mask only the land and set it to missing values?
Thank you,
François
Replies (1)
RE: Masking land values - Added by Uwe Schulzweida over 6 years ago
A workaround could be to create a new mask with subtraction of 1 and multiplication of -1:
cdo div data.nc -mulc,-1 -subc,1 lsm.nc masked_data.ncThe next CDO release comes with the new operator not (logical NOT) with produces the same result:
cdo div data.nc -not lsm.nc masked_data.nc