[mkgmap-dev] Problem with adjust-turn-headings

Sat May 10 11:21:10 BST 2014

Hi,

I have found a situation where --adjust-turn-headings creates a non 
useful turn hint.
Compile the file:
  http://files.mkgmap.org.uk/detail/207
with parameters --route and --adjust-turn-headings (maybe also 
--x-no-mergeroads for easier debugging).
Try a route from Frankfurter Straße to Eilper Straße.
Mapsource and the GPS give a hint that you have to turn right on the 
junction of Frankfurter Straße and Eilper Straße although the street is 
straight.

Logging of the RouteNode class gives the hint:
Adjusting turn heading from -52.342655 to -99.54512 at junction of 
(http://www.openstreetmap.org/browse/way/31171248) and 
(http://www.openstreetmap.org/browse/way/144387754) at 
http://www.openstreetmap.org/?mlat=51.349647&mlon=7.484266&zoom=17

For me the initial heading -52.34... looks weird.
Gerd, do you have any ideas?

WanMil