[OSM-talk] OSM TIGER-based map quality

Dan Putler dan.putler at sauder.ubc.ca
Fri Apr 4 19:04:11 BST 2008


Dave,

Not all counties have been improved through the MAF/TIGER Accuracy
Improvement Project (MTAIP). Here is a link to the counties that have
not been improved in the 2007 TIGER data:
http://www.census.gov/geo/www/tiger/tgrshp2007/tgrshp07nomtaip.txt

Dan

On Fri, 2008-04-04 at 10:53 -0700, Dave Hansen wrote:
> On Fri, 2008-04-04 at 13:51 -0400, Christopher Schmidt wrote:
> > On Fri, Apr 04, 2008 at 10:31:11AM -0700, Dave Hansen wrote:
> > > On Fri, 2008-04-04 at 09:12 -0400, Christopher Schmidt wrote:
> > > > That is exactly what I am suggesting, based on an examination of the
> > > > objects in the area you're looking at: all of them have been updated
> > > > several times (as the history URL above demonstrates) by a single user
> > > > in what seems to clearly be a cleanup effort. (This was based on using
> > > > an OpenLayers map to select 10 different streets based on the lonlat I
> > > > observed in your JOSM instance and view the history for each.)
> > > 
> > > If this is true, then we can probably go back and fix it.  We have all
> > > of the TIGER tlid (unique ids) for all of the uploaded data.  Have those
> > > remained the same in the new TIGER data?
> > 
> > Fix... what? OSM is correct here... perhaps you mean "We can improve
> > TIGER 2007 with OSM data"?
> 
> Did I misunderstand what's going on?
> 
> I assumed that the TIGER '07 data is better than the TIGER '05 (or so)
> data that we populated OSM with.  If it is better, we can update OSM
> from TIGER '07.
> 
> -- Dave
> 
> 
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-- 
Dan Putler
Sauder School of Business
University of British Columbia





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