[ncl-talk] using shapefile to mask out values

[dream916]

Dear All,

I tried to use a China shapefile to mask out values outside of China for a
crop dataset. I found that some values inside were also masked out. I
attached the screenshot of the shapefile, a pdf file showing the output
(top) and the original data (bottom), and my ncl code.  After masking, some
pixels inside China were assigned missing value. Any suggestions? Thank you,

Lei
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