[gradsusr] Base map and Shaded plots

[zhaokuifeng]

basemap is not so easy as shape files.

2012/3/7 Arlindo da Silva <dasilva at alum.mit.edu>

> On Thu, Mar 1, 2012 at 4:57 AM, <Pascal.ACHIM at cea.fr> wrote:
>
>> Hello,****
>>
>> I want to overlay a concentration map (for example) on a base map (eg
>> continents in gray). Is it possible to do this with Grads? I tried with
>> Basemap.gs, but it does not work, continents mask the concentration map.
>> Attached is an example of what I want to do (the continents were colorized
>> in gray after with Gimp).****
>>
>> **
>>
>
> Make sure you draw the basemap (better yet, use shapefiles) first, then
> plot the tracer concentration on top. You can also try pygrads<http://opengrads.org/wiki/index.php?title=Python_Interface_to_GrADS>and draw concentrations on top of a blue marble as in this
> screenshot <http://sourceforge.net/projects/opengrads/screenshots/153722>
> .
>
>    Arlindo
>
> --
> Arlindo da Silva
> dasilva at alum.mit.edu
>
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