Hi Mike, if your overview map contains data with resolution 17 and lower, you should only render a few objects at this low resolution, e.g. large cities, motorways, large rivers etc. POI for shops are not a good candidate for the overview map. Normally you don't have to change much in your style, you just change the level statements so that the lower resolutions are placed in the overview map. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Mike Baggaley <mike@tvage.co.uk> Gesendet: Dienstag, 14. März 2017 17:58:54 An: 'Development list for mkgmap' Betreff: Re: [mkgmap-dev] Overview map Hi Gerd, I was really hoping that someone who understood how this works could provide some useful information. However, I can have a play with it and try to determine how it should be used and hopefully come up with some improved documentation afterwards. The style manual mentions that ideally you should limit the amount of information included in the overview file, but I can't find any mention in the manual as to how to prevent information from being included in the overview file, with it only going to the main file. I would also want to use different line types for the overview file (e.g. make the lines representing roads narrower). How do I do that? Cheers, Mike -----Original Message----- From: Gerd Petermann [mailto:GPetermann_muenchen@hotmail.com] Sent: 12 March 2017 19:44 To: Development list for mkgmap <mkgmap-dev@lists.mkgmap.org.uk> Subject: Re: [mkgmap-dev] Overview map Hi Mike, I don't see a need to change the syntax for the levels statements, but if you have a patch for the docu please post it. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Mike Baggaley <mike@tvage.co.uk> Gesendet: Sonntag, 12. März 2017 19:34:34 An: 'Development list for mkgmap' Betreff: [mkgmap-dev] Overview map Gerd's comment about looking at the overview map, prompted me to look at mine, and I realised I didn't have one (or it is empty), despite me having --tdbfile specified - the help for this option says an overview map will be created. I assume I am not getting an overview map because I don't have --overview-levels specified. Would it be better if the default for --overview-levels is not an empty string when --tdbfile is specified? The documentation for --overview-levels is not very clear. From inspecting the code it looks like the format expected is similar to the format expected by --levels and that the overview level numbers should be greater than the normal levels. Can the documentation for this be improved? Also, what is the benefit of specifying something like --overview-levels=5:15,6:13,7:11 over the much simpler --overview-levels=15,13,11 and have mkgmap work out the next free levels. Could we simplify this? Regards, Mike _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev