Adrian Custer a écrit :
> I'd like to be able to display countries.shp in a Mercator projection. I
> think I've created a correct ProjectionCRS but jmappane bails during the
> first repaint. The critical issue is that the data go to the poles where
> the Mercator is undefined. I thought that
> context's areaOfInterest
> was the critical element to limit the data to a valid range. The file
> attached bails in the first rendering pass.
>
> So who is responsible: me, the jmappane, the renderer, the reprojection
> system?
I would said the renderer.
There is a reprojection system feature which may be of some help. It was used
by J2D-Renderer (if I
remember right), but I'm not sure if it is used by StreamingRenderer. The
feature is that: if a
projection fails with a TransformException, the reprojection system does not
stop at the first
coordinates failing. Instead, it continue to reproject all other coordinates,
and the one that
failed are set to Double.NaN. The exception is thrown only after all
coordinates have been
reprojected. This means that a renderer could catch the TransformException, log
it to some logger
(if they wish) and still display the data, keepind in mind that at least one
point will be set to
Double.NaN in the reprojected data.
Martin.
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