Hi Andrzej For Africa it can be useful, as areas with drive on left /right are at least roughly horizontal and vertical. Also you don't need overlapping for this use case. In general I also think, as soon as mkgmap can support non-rectangle tiles, it will be better obsolete. Using non-rectangle map-area would be a first step on that long way. Anyway we will need either splitter generating all the necessary args-files as for polygon-desc-file or mkgmap picking only tiles within or touching the giving poly file. I estimate using splitter would be faster. Henning On 13.01.2018 00:11, Andrzej Popowski wrote:
Hi Henning,
--polygon-desc-file=filename.osm
Thanks for info. That's very interesting. Actually I would like similar processing for mkgmap, since I'm satisfied with standard splitting.
But I see a good uses for this feature. I can create polygons for drive on left and drive on right countries. Then I hope splitter would create small tiles on borders of these areas, which would minimize size of area with wrong settings.