[ncl-talk] Contour fill transparency not working with RasterFill mode

[Guido Cioni]

Yep, and I still get the same behaviour :( 

I also thought that was the case but then I read that "Transparent" is the default option for cnMissingValFillColor.

Maybe it has something to do with the unstructured grid that I'm using? 

> On 29. Sep 2017, at 17:14, Karin Meier-Fleischer <meier-fleischer at dkrz.de> wrote:
> 
> Hi Guido, :-)
> 
> have you tried the cnMissingValFillColor resource to set the color for missing value?
> 
>   ResC at cnFillPalette         = cmap_r
>   ResC at cnMissingValFillColor = 0
> 
> Bye,
> Karin
> 
> Am 29.09.17 um 16:55 schrieb Guido Cioni:
>> Hi,
>> I'm trying to plot filled contour of wind speed overlaid on a map. In order to mask small values of winds I've both masked the original data and set the first color of the color palette as transparent, i.e. 
>> 
>> cmap_r=read_colormap_file("wind_17lev")
>> cmap_r(0,3)=0.0
>> ResC at cnFillPalette= cmap_r
>> 
>> However, when drawing with ResC at cnFillMode = "RasterFill", this causes the Missing Values to be coloured with white instead that being transparent, as you can see in the attached picture. 
>> 
>> 
>> 
>> Going back to old discussion this seems to be an old problem that was fixed in 6.2.0. Am I wrong? 
>> 
>> I'm attaching the script that I'm using, although it is not 100% clean.
>> Cheers 
>> 
>> 
>> 
>> Guido Cioni
>> http://guidocioni.altervista <http://guidocioni.altervista/>.org
>> 
>> 
>> 
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Guido Cioni
http://guidocioni.altervista <http://guidocioni.altervista/>.org

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