Re: [netcdfgroup] Java-NetCDF map projections...

Tom Rink wrote:
> Hi John,
>
> John Caron wrote:
> > Tom Rink wrote:
> > > Can or will 'VerticalPerspective' support an ellipsoidal earth
> > > like WGS84?
> >
> > Hi Tom:
> >
> > VerticalPerspective currently only handles a spherical earth. If you 
> > have an example file where you can see the difference, please send it 
> > along. Im also not sure if we know what the equations are for 
> > elliptical earth.
> The GOES-R program is specifying a VerticalPerspective type projection
> for an ellipsoidal, WGS84, earth.  There would definitely be differences
> at the finer level, though, as you point out, not on a macro scale.   We'll
> need to implement this in Java, so if you have no plans to do so, we'll
> try to share the code with you.

that would be great. you can look at the existing code in 
ucar.unidata.geoloc.projection

> > BTW, better to send this question to netcdf-java list, which i have 
> > cc'd to. netcdfgroup is best for netcdf format and C library questions.
> Will do.  Are you the right person to ask questions concerning
> how we might add something like this to a list of support projection
> and CF-compliant, if possible, metadata description?

yes, but post to netcdf-java list as a rule, unless its something no one else 
would likely be interested in.


> Tom