Hello all,
we are displaying wind barbs on maps using the windbarbs graphic symbol
and rotation in the sld.
So far we only used the Mercator projection where it works correctly,
but we encountered problems with other projections like the polar
stereographic. In this case the rotation of the windbarbs is incorrect.
Specifically for the polar stereographic projection the correct rotation
can be calculated by adding the value of the longitude coordinate. We
would also need to support other projections.
There was a similar question on the mailing list:
https://sourceforge.net/p/geoserver/mailman/geoserver-users/thread/009e01cd3294$2b238870$816a9950$@com/
Here Andrea proposes that a generic solution to add a new filter
function that would compute the correct rotation regardless of the
projection might be possible.
My questions:
1. was this function implemented?
2. if no, could you please give us some pointers on how to approach
this? What classes to look at and also tips for the computation would be
very appreciated. Depending on how complex the solution is we might try
to implement it.
best regards,
Gyorgy Tomcsanyi
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