Hi Vadim, OK, thanks for the hints. I should have found that on my own ;) It would be a good help if you could also post a link to the img file produced by cGPSmapper for your example file. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Vadim <bombur@mail.ru> Gesendet: Freitag, 8. Februar 2019 20:33 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] Artifacts in final map (.MP -> .IMG conversion) An .MP file can contain several [POLYGON] or [RGN80] sections. Each [POLYGON] or [RGN80] section contains ONLY ONE outer ring and MAY contain 1 or more inner rings (holes). In this sections each line starting with DATA# defines ONLY ONE polygon: The first line of DATA# defines OUTER ring. The following DATA# line(s) (if any) define INNER ring(s). See Page 23 (Section 4.2.4.2) and Page 98 (Section 10.6) of the cGPSmapper User Manual: https://web.archive.org/web/20140718154101if_/http://www.cgpsmapper.com/down... -- Sent from: http://gis.19327.n8.nabble.com/Mkgmap-Development-f5324443.html _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev