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

[Karin Meier-Fleischer]

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.org
>
>
>
> _______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20170929/9d4b1dbf/attachment.html>