[mkgmap-dev] Bad routing on eTrex and MapSource

Thu Jul 9 12:09:37 BST 2020

Hi Gerd

I've assembled the data to demonstrate a major routing failure. It
might be relate to the problems you are investigating but might not. I
noticed this problem a while ago and it fails on r4295.

eTrex/MapSource:
 fastest time - it takes a long detour
 shortest distance - it goes the wrong way and makes a u-turn
BaseCamp (r4561):
 either mode - it goes the wrong way and makes a u-turn

BaseCamp behaviour has changed over the last few svn changes. Some
versions have worked correctly.

In the route details, some of the leg bearings look suspect.

Inverting the route gives correct results.

Here is a minimal map:
http://files.mkgmap.org.uk/download/487/74200072.osm.pbf

and the resultant .img I generate:
http://files.mkgmap.org.uk/download/486/74200072.img

.gpx file with start/end points and MapSource fastest route are
attached, also .sh script.

I've been testing it with an old default style (from r4295) but it
fails in the same way with the current default style

Ticker
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