[ncl-talk] how to mask out tibetan plateau when plotting fnl data?

[Mary Haley]

​You might take a look at using shapefiles and the "gc_inout" function. See
example shapefiles_4.ncl at:

http://www.ncl.ucar.edu/Applications/shapefiles.shtml#ex4

You may be able to use the "shapefile_mask_data" function that's part of
this example, if you can find a shapefile containing the Tibetan Plateau.

If already have a lat/lon array that contains the Tibetan outline, then you
can use this with gc_inout directly, and you won't need to bother with a
shapefile.

--Mary
​


On Sun, Aug 31, 2014 at 6:48 AM, Li Qi <liqi123sh at qq.com> wrote:

> Dear all,
>
> I'd like to ask how to mask out tibetan plateau when plotting FNL data on
> 700hPa and 850hPa.
>
> Any advice will be greatly appreciated!
>
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