[ncl-talk] How do I color fill a map using transparent colors for part of the range?

[Toni Klemm]

Hi Cathy,

I had a similar problem before. It might work to duplicate the variable and replace the categories you want to be transparent with missing values. That way they won’t be colored. 

Good luck,
Toni


Toni Klemm, Ph.D.
Postdoctoral Research Associate
Department of Ecosystem Science and Management
College of Agriculture and Life Sciences
Texas A&M University, College Station, TX
Contributor to the Early Career Climate Forum
www.toni-klemm.de | @toniklemm


> On Jun 6, 2019, at 11:35 PM, Cathy Smith <cathy.smith at noaa.gov> wrote:
> 
> NCLers
> 
> I am hoping I missed this in the doc. I'd like create a map that is colorfilled (either contour or raster). I would like the lowest 3 contour ranges to be transparent and the rest not. I can't figure out how to do this. I tried overlay and I wasn't able to not color part of a map so the overlay worked. Also, I don't see you can set an array of transparency for each color.
> 
> Any suggestions would be appreciated.
> 
> Cathy Smith
> 
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