[Talk-us] Georgia USGS import quality issues

Martijn van Exel m at rtijn.org
Tue Feb 16 00:24:42 UTC 2021


Hi all.

While cleaning up some TIGER data in Georgia, I came across a number of 
land use polygons that seem to have resulted from a USGS import that 
looks to have happened about 12 years ago. Here is one of the 
changesets: https://www.openstreetmap.org/changeset/660316

There is a reference to this import on the Georgia wiki page: 
https://wiki.openstreetmap.org/wiki/Georgia_(U.S._state)#Land_Use . The 
user (Liber) does not seem to be active any longer, but I haven't 
contacted them yet.

This Overpass query suggests that there are almost 4000 ways with the 
identifying source tags: https://overpass-turbo.eu/s/13xi . Many of the 
examples I came across are of dubious quality. Either there is little 
relation to ground truth, deprecated tagging is used, or both.

I raised this in #local-georgia on Slack, but local mappers there are 
not familiar with the import.I created a MapRoulette Challenge to look 
at these one-by-one, but the community may prefer a different approach? 
https://maproulette.org/browse/challenges/16952https://maproulette.org/browse/challenges/16952https://maproulette.org/browse/challenges/1695. 
What are your thoughts on how to proceed?

2

Martijn


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