[Talk-us] Comparing Tiger 2017 dataset with OSM in a automatedway.

Joe Sapletal joe.sapletal at charter.net
Wed Oct 11 15:42:15 UTC 2017

This is really cool.  Can I suggest for the Twin Cities metro area someone doing something similar with the Metro Regional Centerlines Collaborative Local Centerlines (MRCC)?  I know that Dakota County hasn’t submitted centerlines to Tiger in a couple of years, but will be for the next update.  Not sure about the other counties though.  There very well may be areas that the MRCC will be a better source than the Tiger data.



From: Ian Dees
Sent: Wednesday, October 11, 2017 10:25 AM
To: Badita Florin
Cc: talk-us at openstreetmap.org Openstreetmap
Subject: Re: [Talk-us] Comparing Tiger 2017 dataset with OSM in a automatedway.

It would be interesting to see what differences CYGNUS would turn up. What would the output of CYGNUS be?

I put together the TIGER 2017 layer that's in the editors right now. I'll work on writing up how I did it later today.

Basically: I used tiger-tiles (https://github.com/iandees/tiger-tiles) to generate a vector tiles database with expanded road names from TIGER 2017. Then I downloaded an osm-qa-tiles (https://osmlab.github.io/osm-qa-tiles/) file for the United States and ran osmlint's tigerDelta (https://github.com/osmlab/osmlint/tree/master/validators/tigerDelta) to find the segments that had different geometry. The output was then ran through Tippecanoe to generate a vector tileset and posted to Mapbox as the low zoom red features.

On Wed, Oct 11, 2017 at 4:03 AM, Badita Florin <baditaflorin at gmail.com> wrote:
Hi, i wanted to ask if there will be interest around comparing TIGER 2017 with what we have in OSM, using CYGNUS, in a automated way. http://www.openstreetmap.org/user/mvexel/diary/36746
On top of cygnus, i have developed shgp2cygnus, were you can place any shapefile, any size, you provide a translation file, and, in the end, you get a list with all the ways that are in the TIGER dataset, but not in OSM.
This would be something useful for the community ? 
I don`t know if somebody is already doing something similar, or what is the status ? Were can i read more ?
I knoiw that the TIGER 2017 Overlay in JOSM shows in red the roads that are not in OSM, but are in TIger 2017. 
But I don`t know were to read more, and if the data is accessible to download directly, not just show as a WMS Layer.
It will take around 7-14 days to process all USA”

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