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Jeff
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Jeff Weber                                    address@hidden        :
Unidata Program Center                        PH:303-497-8676        :
University Corp for Atmospheric Research      3300 Mitchell Ln       :
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000  :
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Hello THREDDS and DAWG,

To be more precise, what Bruce is looking for is an IDL
routine that will use the projection parameters available in the
ETA data sets to calculate latitudes and longitudes for each data
point. The output is already mapped to a Lambert Conformal
projection with standard parallels at either 25 or 40 degrees but
does not come with any geo-referencing data layers (lat/lon). We
need this to be able to remap the data sets to a common projection.

I have been exploring the use of the IDL "map_proj_inverse" function
but have not figured out the Cartesian coordinate system orientation
yet.
If anyone knows how to relate the x,y output of map_proj_inverse to the
mapped data or has a routine that will do this we would appreciate
hearing from you.
Thanks,

Martin Landsfeld

The New Media Studio
www.NewMediaStudio.org
805-966-1100

On Nov 5, 2004, at 9:38 AM, Bruce Caron wrote:

> Hi THREDDS and DAWG...
>
> WE are trying to get some ETA model output into IDL... and can't seem
> to
> find an existing IDL routine.  Does anyone know of such a routine out
> there?
>
> We are working on a THREDDS viewer for these data.
>
> Any and all help is greatly appreciated.
>
> cheers
>
> bruce caron
>

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