[ncl-talk] How can I mask regions ousider of the interest area using a .shp file

[Guido Cioni]

It looks to me that example 11 in this page
https://www.ncl.ucar.edu/Applications/shapefiles.shtml does exactly what
you want to do, specifically read a shapefile, select an area to mask, save
the mask to a netcdf file and then use this variable to mask the original
data (i advise you to create the netcdf at first otherwise it will take so
much to use the shapefile every time).

Otherwise you have to explain better what you want to do ;-)

Il 5 mar 2018 11:22 PM, "Leo Niu" <leo2018niu at gmail.com> ha scritto:

>
> I'm ploting a contour of an area. But boundries of the interest area in
> Ncarg4_0 database can't match with my shapefile. I have searched for
> ploting an area and masking outside using a polyline or polygon shapefile
> on www.ncl.ucar.edu.But I haven't found a method dealing with this. Is
> there some ways that can help in ploting contour of an area only inside of
> a geocoded polygon？
> Thanks a lot.
> leo2018niu
> 邮箱：leo2018niu at gmail.com
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