[mkgmap-dev] gpx track files do not work on routable maps

Thu Mar 8 10:41:38 GMT 2012

Hi,

I also made an interesting discovery using Garmin City Navigator maps.
I reported that GPX track files were working properly with Navigation.
Although navigation works indeed better than with OSM/mkgmap maps,
they are not exempt of issues. Take this route in London:
http://www.bikemap.net/route/392706.
Without using a basemap, there are still a lot of breaks in the
navigation using OSM/mkgmap. Using Garmin City Navigator NT map, it is
a bit better, but has still a couple of breaks too.

This means that - assuming the navigation algorithm functions properly
(and this is not guaranteed either) - even Garmin maps may have flaws
that break routing too!

Eric