[Talk-ca] Imported frustrations

[Harald Kliems]

Hi everyone,
I've recently moved to Montreal from Upstate NY and have been mapping mostly in my neighborhood. When rendering a map for routing purposes for my bike, I noticed that the routing data for Quebec is often not that great. With the help of the great and powerful OSM Inspector I started to fix a bunch of these errors, but after a while I realized that their number is huge and they've all been caused by imports: In many cases (for examples see my current edit history http://www.openstreetmap.org/user/hobbesvsboyle/edits ) roads have been imported twice (CanVec 6 and Geobase or later CanVec version) and one version of the road is usually not linked with some or all of the crossroads. Finding and fixing these errors has been a huge timesuck and not much fun. As you can see here, the problem is pretty huge http://tools.geofabrik.de/osmi/debug.html?view=routing_non_eu&lon=-75.07164&lat=45.79735&zoom=8&opacity=0.98 and I was therefore wondering if anyone has suggestions for a faster fix.

What I've done so far is to use the OSM Inspector and take "unconnected roads" as an indication for identifying problematic areas. In JOSM I then glance over intersections and ways for duplicate and unconnected roads in that area. Sometimes it's fairly easy to see them, sometimes it's not. In addition, I'm using JOSM's validator to find additional problems.

Does anyone have suggestions for speeding this up? And are those of you doing the imports aware of this problem?

Frustrated,
 Harald.