Hi Andrzej, yes, that looks strange. I've added option --show-profiles=1 to yours so that MapSource displays height values even in those areas where hill shading is not working. For all: The problem is near N49.19004 E20.07117 Mapsource displays no hill shading at zoom 500m, the wrong area changes when you zoom in and out or press 2xStrg+G to clear the cache. Not sure if this is a problem in the DEM data or in the hill shading algo. Will try to find out more tomorrow. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andrzej Popowski <popej@poczta.onet.pl> Gesendet: Donnerstag, 11. Januar 2018 16:50:13 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] HGT - getElevation() Hi Gerd, I have uploaded at http://files.mkgmap.org.uk/ data for compilation, which gives me a map with shading errors. Mkgmap version 4045. -- Best regards, Andrzej _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev