Mike Nice.
Could you use relative object density per little square as a proxy for population density? I ask because all the bright green areas near me are forests or old milk farms. I don’t care. I want to see high density areas and attack those as a priority since that’s where people are and where they go... Steve *From:* Michal Migurski <m...@teczno.com> *Sent:* January 3, 2013 7:03 PM *To:* OpenStreetMap US Talk <talk-us@openstreetmap.org> *Subject:* Re: [Talk-us] More on TIGER: Where it's likely safe to import On Dec 17, 2012, at 12:40 PM, Michal Migurski wrote: > On Dec 16, 2012, at 8:32 PM, Martijn van Exel wrote: > >> Have you looked into full history planet parsing to get a fuller >> picture of editing history? I took a stab at full history user metrics >> some time ago using osmjs; >> https://github.com/mvexel/OSMQualityMetrics/blob/master/UserStats.js - >> this produces one set of metrics for the entire .osh file you feed it >> but it may prove useful for future work. I haven't touched this in a >> while but it should still work :/ > > I have downloaded a copy and given it a beginning look. I'm new to parsing things of that magnitude; my first thought was to use the full history file for creations/modifications/deletions on nodes and add that to what I'm doing already for ways on the osm2pgsql tables. Does that sound reasonable? Over the holiday break, I've been grinding through the full history file. I'll write more about the process and publish some raw data, but the short version is that I've replaced the Green Means Go tiles with new versions that incorporate edits to the underlying nodes, address some of the feedback I've received, and show a slightly different map of the US. New map: http://www.openstreetmap.us/~migurski/green-means-go/ Old map: http://www.openstreetmap.us/~migurski/green-means-go-2012-12-16/ Charlotte Wolter and NE2 both pointed out that Florida should see a lot more post-import editing that I had originally shown, and in fact that's what the map now shows: http://www.openstreetmap.us/~migurski/green-means-go/#9/28.3213/-81.6257 http://www.openstreetmap.us/~migurski/green-means-go-2012-12-16/#9/28.3213/-81.6257 Urban fringe areas also show more edits, making them less attractive targets for blind imports: http://www.openstreetmap.us/~migurski/green-means-go/#10/37.7707/-122.3451 http://www.openstreetmap.us/~migurski/green-means-go-2012-12-16/#10/37.7707/-122.3451 I've also stripped away the US coastal territory based on NLCD water designation, per SteveC's suggestion. These massive edits to counties in Pennsylvania are interesting to me: http://www.openstreetmap.us/~migurski/green-means-go/#8/40.918/-77.146 -mike. ---------------------------------------------------------------- michal migurski- contact info and pgp key: sf/ca http://mike.teczno.com/contact.html _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
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