On Wed, Sep 30, 2009 at 4:02 PM, Spencer Riddile <span dir="ltr"><<a href="mailto:riddile_spencer@yahoo.com">riddile_spencer@yahoo.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
If someone wanted to upload public domain, state road centerline data to OSM, what procedures could they take? It seems like what we would like to do is overwrite Tiger data but preserve user contributed data. I did see an example of using an opensource GIS plugin (RoadMatcher) that compares road networks (<a href="http://wiki.openstreetmap.org/wiki/Geobase_NRN_-_OSM_Map_Feature" target="_blank">http://wiki.openstreetmap.org/wiki/Geobase_NRN_-_OSM_Map_Feature</a>) before uploading road data. Are there other examples of procedures people have used or best practices to bulk upload road centerline data?</blockquote>
<div><br>I don't believe anyone has come up with an automated way of updating existing data with better/different data. The best you can do is download the existing data and compare it manually with the newly-converted data. Perhaps we could write some simple tool to crowd-source the comparison between new and old data:<br>
<br>"Here is the old data, here is the new data. Look at the road named "XYZ Rd.". Is:<br><br>a) the old data more correct<br>b) the new data more correct<br>c) neither is correct<br>d) ..."<br></div></div>