On Tue, May 15, 2012 at 12:09 PM, Chris Haste <[email protected]> wrote:
> Hi All,
>
>
>
> I have a question.. If I want to use the ESRI Weather font to display
> symbols that indicate wind speed and direction then that would appear to be
> quite straight forward in a Cartesian projection as rotating the symbol to
> the value given for the wind direction will give the correct result.
>
>
>
> But I suspect, and this is my question, that when the background map is
> projected into, for example, a polar stereographic projection rotating the
> symbols via the SLD will give incorrect results.
>
>
>
> Could someone confirm this suspicion and maybe point me in the direction of
> how to ensure that the TTF symbol rotation is always correct regardless of
> the projection?

Ha, interesting question indeed.
We don't have support to do that right now, someone would have to
write a new filter function to compute a "on map" azimuth given the
geographic one. Does not sound trivial, but I bet it's doable.

Cheers
Andrea

-- 
Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead

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