[mkgmap-dev] a routing problem

Wed Jul 29 13:32:14 BST 2009

Hello list,

The following inter tile routing gives nice and unexpected results.

areas.list:
63240001: 0x241000,0x25000 to 0x24d000,0x3b000
63240002: 0x24d000,0x25000 to 0x251000,0x34000
63240003: 0x24d000,0x34000 to 0x251000,0x3b000
63240004: 0x241000,0x3b000 to 0x24b000,0x42000
63240005: 0x241000,0x42000 to 0x24b000,0x53000
63240006: 0x24b000,0x3b000 to 0x251000,0x41000
63240007: 0x24b000,0x41000 to 0x251000,0x53000
63240008: 0x251000,0x25000 to 0x255000,0x39000
63240009: 0x251000,0x39000 to 0x255000,0x40000
63240010: 0x255000,0x25000 to 0x263000,0x40000
63240011: 0x251000,0x40000 to 0x259000,0x49000
63240012: 0x251000,0x49000 to 0x259000,0x53000
63240013: 0x259000,0x40000 to 0x263000,0x48000
63240014: 0x259000,0x48000 to 0x263000,0x53000

(You don't need all areas, but I don't know a trivial way to know which
map part is which split).

Then run:
java -Xmx1600m -enableassertions -jar ../splitter/dist/splitter.jar
--split-file=areas.list netherlands.osm

java -enableassertions -Xmx1800m -jar
~/garmintest/mkgmap/dist/mkgmap.jar --country-name=Nederland
--country-abbr=NL --latin1 --remove-short-arcs --lower-case
--preserve-element-order --location-autofill=1 --gmapsupp --route --net
--tdbfile -c template.args

Then load the attached tdb-file in MapSource.exe. You'll notice three
waypoints, A, B and C, all three on a different tile, A and B being
adjacent and B and C also. Mapsource will route from A to B, from B to C
and from A to B via C, but it will not route from A to C.

I don't have my Garmin Nüvi at hand, so I can't test it there - if you
want me to, I'll be able to do that in the evening if you want me to.

Best regards,

Valentijn
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