Phil/Ethan-
Philip Bentley wrote:
> An obvious one perhaps, but one which we may find increasingly useful /
> relevant in light of the rise and rise of GoogleEarth-type applications,
> is the Orthographic projection. This being the classic 'view from space'
> projection.
>
> Same grid mapping parameters as the other azimuthal projections, viz.
>
> grid_mapping_name = "orthographic"
>
> longitude_of_projection_origin
> latitude_of_projection_origin
> false_easting
> false_northing
>
> (though off the top of my head I can't think of a scenario where one
> would want to use the last two params).
I think GE actually uses a tilted perspective view. But,
I think CF should support the Vertical Perspective with
an ellipsoid. EUMETSAT has GRIB messages with this projection
and an elliptical earth.
Don
*************************************************************
Don Murray UCAR Unidata Program
dmurray at unidata.ucar.edu P.O. Box 3000
(303) 497-8628 Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
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Received on Wed May 21 2008 - 05:05:58 BST
