I'ld rather see a good OSM based worldmap (or simply based on other open sources if they prove to be better for use ) that we could use to exchange the basemap. Thinking about a map - usable both in Basecamp/Mapsource as well as on GPS Devices - 15-20MB in size - including ocean/land, big cities - maybe highway=motorway, big rivers, country borders... - Resolution maybe 16-14-12-10. (maybe create a version including indexed POIs (for desktop) - one without so it doesn't overlap the search). On 23 February 2015 at 13:06, Andrzej Popowski <popej@poczta.onet.pl> wrote:
Hi Gerd,
I see no reason why we should not add the overview map to the gmapsupp if that is what the user wants and the device is working fine with it.
There is no need to add overview to gmapsupp. It can be copied as a separate file to GPS with the same result. Or user can merge overview map and detailed maps to a single gmapsupp: mkgmap.jar --gmapsupp --index 1*.img overview.img
The second version adds data from overview map into index search, which cause duplicated search results, see attached picture. I think both version will show duplicated cities when performing search near current position.
I haven't checked thoroughly, but I have noticed a delay, when switching from detailed map to overview in GPS. I think single map with more levels could be faster.
Summarizing: in my opinion this is not a proper way to create a map. If you add direct support for this procedure to mkgmap, you would give some kind of recommendation for it. And since it can be easily done without any changes to mkgmap, I would rather leave it as it is.
-- Best regards, Andrzej
_______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
-- Felix Hartman - Openmtbmap.org & VeloMap.org Floragasse 9/11 1040 Wien Austria - Österreich