Hi Andrzej, in MDR many tables start at 1 instead of 0. I assume 0 is reserved for "no data". The code is based on the reports and checks made with the display tool against original Garmin maps and the gmapsupp.img created with MapSource. When I change the code as you suggest MapSource will often fail to find a road with message like "The selected street is not valid in this map product. Please select a different street." and that means that the index is broken. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andrzej Popowski <popej@poczta.onet.pl> Gesendet: Mittwoch, 17. Mai 2017 14:28:01 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] please test r3942 Hi Gerd, I'm not proficient with SVN but I have managed to download this branch. A lot of changes! I have one doubt. When you sort "allstreets", you fill the table "streets" and add index in table to Mdr7Record. I think these indexes start form 1, shouldn't they start form 0? Sorry if I miss something obvious. -- Best regards, Andrzej _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev