On Jan 6, 2013, at 4:30 AM, Alex Barth wrote: > On Jan 4, 2013, at 3:33 PM, Richard Welty <[email protected]> wrote: > >> On 1/4/13 1:31 PM, Michal Migurski wrote: >>> Interesting—how would you characterize "bad" roads? One characteristic of >>> crappy TIGER data is road wiggliness, is that what you mean? >> >> the tiger 2010/11/12 data is much better for many of the "bad tiger" areas. >> it'd be a bit of work to do >> a comparison of the data, but it might be able to yield the desired >> information. > > This is exactly the direction I'm thinking. What would it take to create a > TIGER 07 vs 12 comparison map and use this as a basis for identifying the > areas that need most attention? I've been talking to Ian over here and we > were thinking of intersecting OSM highway data with TIGER 12. This could be > achieved e. g. by overlaying a light, opaque OSM highway layer with a > contrasting TIGER layer, only exposing TIGER 12 geometry where it differs > from OSM. > > Thoughts?
This approach makes sense. You're thinking to come up with a metric for mismatched area between the two datasets? Would it be enough to total it up into 1x1 km buckets or would you want it to be substantially more detailed? -mike. ---------------------------------------------------------------- michal migurski- contact info and pgp key: sf/ca http://mike.teczno.com/contact.html _______________________________________________ Talk-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-us
