[gradsusr] GrADS help, plotting shaded contour precip/ptype products over a basemap/background

[Jeffrey Duda]

Jeff,
What color table are you using?  Are you sure you have a #0 color?  I know
that's supposed to be the background, but perhaps you are overwriting it
with some other color that has the same color as your background but a
different color number.

Jeff Duda

On Mon, Nov 8, 2010 at 12:51 PM, Jeff Chabot <jsc219 at gmail.com> wrote:

> Dear GrADS Users,
> I have been trying to apply a basemap to my precip/ptype shaded contour
> products on my personal website for some time now.  I have brainstormed and
> searched the GrADS online documents and have come up with ideas, but they
> have never worked.  My latest idea was to use Google Maps terrain data as a
> background to the map.  I thought it was a good idea, but I discovered that
> I still cannot resolve the issue in that precip = 0 shows either all white
> or all black depending on what I choose for the background, covering up my
> basemap.  I really thought the following command would have resolved that
> issue, but it did not:
>
> printim precip_NE_1.png png x570 y435 -b NE.png -t 0 Versions:GrADS: 2.0a9
> OS: Fedora 13
> Sample: http://jeffsweatherservice.com/grads/nam/ptype_NE_2.png
>
> I know this can be done because of the example:
>
> http://wxmaps.org/pix/ez.east.html
>
> Any assistance here would be much appreciated. Sincerely,
>
>
> Jeff Chabot
> Email: jsc219 at gmail.com
> Web: http://jeffsweatherservice.com
>
>
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-- 
Jeff Duda
Iowa State University
Meteorology Graduate Student
3134 Agronomy Hall
www.meteor.iastate.edu/~jdduda
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