On Jan 28, 2009, at 23:10, Gert Münzel wrote:
making my first steps with mkgmap that, although the routing works fine in Mapsource, i get in trouble on my Gps unit Garmin gmap60csx. Very often i got these strange straight magenta routing lines in between normal routing. Meanwhile i figured out that it seems to be that t has something to do with the length of a polyline. I don't know if it is the count of points/nodes of the polyline or still the lenght or both. But comparing the same mp-file once compiled with mkgmap, once with cgpsmapper i see, that cgpsmapper split these long lines during mkgmap leave them like they are.
How did you compare the IMG files? Have you tried decompiling the broken IMG with test.display.*? Have you tried manually splitting the polylines in the .mp-file? Does it help? My guess is that the problem lies with long polylines (in the .mp- file) that are split into several polylines (in the IMG) by mkgmap, which results in a road made up of several polylines. But if I understand you correctly, maybe the problem is just with long polylines in the IMG file? Cheers Robert