[mkgmap-dev] highway=track with no road_class and road_speed set breaks routing ## was ## "No roads near target" bug in Schwabmünchen

Sat Apr 6 20:38:39 BST 2013

Hi all,

finally I got to the bottom of the strange routing issues in Schwabmünchen.

building a map of "bayern" with the default mkgmap style does not have
the routing issues,
but when I change just one single line in the "lines" file the routing
is terribly broken.
I can no longer navigate to the POI "Schönwetter Automobile" nor to the
address "Robert-Bosch-Straße 14", neither on the Nüvi nor on the Oregon .

the line in question is line 162 in the "lines" file, it reads:
    highway=track [0x0a road_class=0 road_speed=1 resolution 22]
when I change it to
    highway=track    [0x0a resolution 24]
dropping the road_class and road_speed values, the routing is broken

map is built with:

java -ea -Xmx1500M -jar /home/franco/map_build/mkgmap-r2544/mkgmap.jar
-c /home/franco/map_build/map.conf
--style-file=/home/franco/map_build/mystyles/default
--bounds=/home/franco/map_build/bounds.zip
--precomp-sea=/home/franco/map_build/sea.zip --generate-sea
--mapname=68241001 --family-id=6 --product-id=77
--description=bayern_20130404_1900 --family-name=mkgmap-routing-bug
--draw-priority=10 /home/franco/map_build/tiles/*.o5m

the tiles were created with splitter-r300

the options in map-conf are:
x-housenumbers
add-pois-to-areas
pois-to-areas-placement=entrance=main;entrance=yes;building=entrance
link-pois-to-ways
preserve-element-order
process-exits
remove-short-arcs=2.8
ignore-maxspeeds
check-roundabouts
check-roundabout-flares
make-all-cycleways
adjust-turn-headings
location-autofill=bounds,is_in,nearest
min-size-polygon=8
reduce-point-density=4
reduce-point-density-polygon=8
route
latin1
keep-going
max-jobs
index
gmapsupp
tdbfile
nsis

location is Schwabmünchen:
http://www.openstreetmap.org/?lat=48.197515&lon=10.763007&zoom=18
put your current position somewhere nearby, maybe on the
Gottlieb-Daimler-Straße, or the "a30", then start the address search and
find the "Robert-Bosch-Straße 14", or open the POI list and look for
"Schönwetter Automobile", the hit GO use "automobile"  routing with
"little time" and experience the trouble.

Ciao,
  Franco

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