[ncl-talk] Hatch over contour plot

[Mary Haley]

Hi Marston,

If you simply want to draw hatching on top of an existing contour plot,
then you can use gsn_contour_shade.

http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_contour_shade.shtml

This function is for the sole purpose of taking an existing contour plot,
and adding some hatching or stippling to highlight an area of interest.

Here are some examples:

http://www.ncl.ucar.edu/Applications/conOncon.shtml#ex4
http://www.ncl.ucar.edu/Applications/coneff.shtml#ex11
http://www.ncl.ucar.edu/Applications/overlay.shtml#ex5
http://www.ncl.ucar.edu/Applications/wavelet.shtml#ex3

Some of these may not use gsn_contour_shade.

Let ncl-talk know if this is not what you're after.

--Mary


On Thu, Mar 8, 2018 at 3:47 AM, Marston Ward <marston.johnston at gu.se> wrote:

> Hi,
>
>
> I’m trying to mask a part of a  gsn_csm_contour plot using a “hatch”. I
> don’t want to simply mask out the area because I want to the data to still
> be visible under the hatch.
>
> Is it possible to do this in NCL? A simple search returned nothing in NCL.
> Just wondering if this is possible and it so, are there examples.
>
>
> Best,
>
>
> /M
>
> *Marston S. Ward*
>
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