[mkgmap-dev] Inter-tile routing

Mon Aug 31 10:19:55 BST 2009

Hi,

i'm  using all stable splitter and mkgmap versions in tha last weeks, 
but also the latest splitter r78 and  mkgmap r1160 versions, where i 
recognize on my oregon 300, that inter tile routing does not work and 
breaks with the german error message  'Routenberechungsfehler'.  There 
is no difference in the routing result, by loading the generated 
gmapsupp.img from mkgmap or by loading the tiles via mapsource to the 
garmin device.

Now i've done a look into mapsource and found on the original garmin 
city navigator v9 cards, that there are special 'rounded' line ends near 
the cut lines (see attachments). Is this a sign for a special garmin cut 
and merge function for the cards that is still missing in mkgmap or is 
it something else? I really don't understand the building of garmin 
image maps, but i can envisage the necessity of a merging point at a cut 
position.

I calculate the german map from www.geofabrik.de:

http://download.geofabrik.de/osm/europe/germany.osm.bz2

unzip the file and do the following:

java -Xmx5000M -jar splitter.jar --mapid=63000005 --max-nodes=1000000   
../../germany.osm

java -Xmx5000M -jar /osm/mkgmap/mkgmap.jar
    --style-file=/osm/styles
    --description='OSM by mb'
    --country-name=germany
    --country-abbr=DE
    --family-id=59
    --product-id=112
    --series-name=OSM
    --family-name=OSM
    --area-name=DE
    --latin1
    --lower-case
    --mapname=63000005
    --overview-mapname=63000001
    --draw-priority=10
    --add-pois-to-areas
    --net --route
    --gmapsupp
    --ignore-osm-bounds
    --location-autofill=2
    --remove-short-arcs=9
    --frig-roundabouts=0.1  ../*.osm.gz /osm/types/d310809.TYP

Cheers

Michael

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