[gradsusr] how can i delete or clean shade or contour that there is outside of shape (*.shp) on map ?

[AliReza Balalan Fard]

Could you please lead me how
​can i​
​ cut the shade of outside of
my shape file that i plot in GrADS ? ​

​for example first i plot temperature and second i draw my shape file(*.shp
GIS file) (superimposed ) , now i want to clear sume shade that there is
outside ​
​of shape boundaries (for example shape of province or country or any
polygon... )​


​how can i clean my plot ?​


-- 


Best regards,
Alireza​
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