Then set up a mask something like this, where elev is the topography data.
yes? LET ocean_mask = IF elev LT
0 THEN 1
yes? LET masked_var = IF ocean_mask THEN my_var ELSE
bad_value
where my_var is a variable you want to work with, and you've defined
bad_value
to be the value of the missing-data flag for your data.
yes? SHADE masked_var ! to test what you have done
Ansley Manke
andreast@usp.br wrote:
Hello!I have some data that have value over land, but I would like to make some
analysis only over oceans.Does anyone know how can I put 'missing value' over land?
Thanks,
Andrea S. Taschetto
--
Ansley Manke Pacific Marine Environmental Laboratory Seattle
WA (206)526-6246