[Talk-us] Using TIGER to find missing road segments in OSM after license change

Richard Weait richard at weait.com
Thu Mar 29 13:40:30 BST 2012


On Wed, Mar 28, 2012 at 8:48 AM, Ian Dees <ian.dees at gmail.com> wrote:
> On Wed, Mar 28, 2012 at 5:47 AM, Josh Doe <josh at joshdoe.com> wrote:

[ ... ]
>> I was thinking more about using TIGER 2011
>> to find roads that seem to be missing in the OSM database. My PostGIS
>> skills are nil, but it seems like it should be a fairly trivial query
>> to buffer the
>> OSM ways and find TIGER segments which don't intersect the buffered ways.
[ ... ]
> I started playing with this last night and ended up with the Chicago area
> metro extract from Mike and the Cook County TIGER roads data as layers in
> QGIS. Next up is to play with various queries to find missing roads in OSM.
> I like the idea of buffer and joining as a start and will probably move over
> to PostGIS to do that.

We used OpenJUMP and the RoadMatcher plugin in the early days of
Canadian imports to generate lists of matching or missing roads.

http://wiki.openstreetmap.org/wiki/Roadmatcher



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