Hi,I think that you may want the idea of masking to define a variable based on some condition.
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/variables-xpressions/XPRESSIONS#_VPID_181 Ansley On 2/9/2017 1:10 AM, afwande juliet wrote:
Dear ALLI am at calculating and plotting things like rainfall onset,cessation,dry, wet spells ofcourse these are based on a threshold. I cant figure how ferret can help me go aboutcan someone help me how to go about it