By default, the land in plot created by any gsn_csm_map plot is going to be filled in Gray.
In your case, you can turn this off by setting:
mpres@mpMaskAreaSpecifiers = "United States"
This will cause the United States area to be masked, but it will still fill the areas you specified with:
mpres@mpSpecifiedFillColors = fill_colors
--Mary
On Aug 21, 2013, at 5:21 PM, Luo, Chao wrote:
> Dear NCL folks,
>
> I am working on the plot with filling different color by different particle concentration in GA counties. The problem is that one county was filled by background color (gray color). I checked the ncl script i used, and can't find something wrong. I am attaching the plot and script here. Any suggestions or comments are very appreciated!
>
> cl
>
>
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Received on Thu Aug 22 08:50:08 2013
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