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[mkgmap-dev] [PATCH] Creating contour lines from DEM data

From Christian Gawron christian.gawron at gmx.de on Sat Jul 4 07:04:53 BST 2009

> A very good hint. The understanding of all discussions on the matter 
> is that the current OSM licence does not allow mixing with CIAT data 
> nor with ASTER data. So you cannot publish those maps.
Could you elaborate on this? I would understand that e.g. the license of 
the ASTER data forbids publishing of derived work (although I haven't 
checked this). But is there really a point in the OSM license which 
forbids creating derived works (maps) which as an "add-on" contain 
features created from proprietary data sources?

Best wishes

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