[gradsusr] problem with projection image

[Arlindo da Silva]

On Wed, Dec 8, 2010 at 2:31 PM, Tatiana.Gonzalez
<Tatiana.Gonzalez at noaa.gov>wrote:

>  Hi,
> Is there a way to project grads in native satellite image? I have this
> image (see 10Z12DEC2008_wind.png) but what I really need is something like
> this (see sat_image.png)
>
>
>
> Can anybody give me some ideas on how to solve this problem?
>

I'd done this sort of thing in pygrads, and there are some examples plotting
fields on a geostationary image. More information here:


http://opengrads.org/wiki/index.php?title=Python_Interface_to_GrADS

This requires some python. For example, to plot contours on a conus image:

       sat = Image.open("goes_conus.jpg")
       opts=(-109.65,14.23,-44.65,62.23,-75.) # image info
       ga.basemap('geos', opts=opts, resolution='l')
       ga.contour('h500',bgim=sat,N=12,Map=False)
       title("500 hPa Heights")


The resulting plot is here:
dbimage.php<http://sourceforge.net/dbimage.php?id=153948>

    Arlindo

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