Hi, Check out the function FILLL_XY http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/appendix-a-external-functions/fill_xy Something like let mask = ignore0(ifv msla then 0 else 1) ! Make a mask with 1 wherever original is missing let msla_filled=fill_xy(msla,mask,10) should do the trick. On 19/10/17 17:48, Karnan C wrote:
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