[Qgis-user] orthographic projection for raster not working

[muhali]

Andre Joost wrote
> The ortho projection does not cover the whole world, only the visible 
> half. To avoid artefacts, you have to crop your data source to that 
> visible half. I have described here how you can do it:

ok, but why does it "generally" work for vector data? - And then, the
visible part depends on the chosen center of projection, so crop the data is
not easily done.




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