County level map background display and displayed data shifting problems

[Arlindo da Silva]

On Fri, Dec 4, 2009 at 2:08 PM, Jeffrey M. Medlin <Jeff.Medlin at noaa.gov>wrote:

>  Hello fellow GrADS users!
>
>   Am new to GrADS.  Trying to figure out how to display '*county*' level
> map backgrounds.
>


If you have shapefiles with your county boundaries, the shape extension may
do the trick for you:

        http://opengrads.org/doc/udxt/shape/



> Also, when I plot any 2-D field, the data are shifted eastward (e.g., the
> map background for a Bay appears further west of its actual location).
>

This could be an issue with your ctl, or coordinate variables. GrADS
coordinates correspond to the center of the gridboxes, not the edges.

   Arlindo


-- 
Arlindo da Silva
dasilva at alum.mit.edu
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