Hi all,
I did some test with the roadmatcher and wanted to give you some feedback. Although the tool has advanced features for the conflation of roads networks, the automatic matching function doesn't behave as expected when the two datasets have significant differences in terms of segmentation rules. As some of you might have realised, the geobase network has a lot more junction than the osm network. The roadmatcher tool seems to have trouble to find the different pieces of geobase segment that correspond to an OSM element. Fixing the resulting layer was a tedious task. It might be possible though to tweak on the different tolerance values in order to improve the result. Have some of you got good result with this tool? If so, what values did you use for the tolerances? Right now, I'm working on a simpler solution using fme. Jean-Sebastien Moreau Ressources naturelles Canada / Natural Resources Canada Centre d'information topographique / Centre for Topographic Information Gouvernement du Canada / Government of Canada 2144-010 rue King Ouest, Sherbrooke (Québec) Canada J1J 2E8 2144-010 King West Street, Sherbrooke, Quebec, Canada J1J 2E8 téléphone / phone: 819.564.5600 ext. 252 télécopieur / facsimile: 819.564.5698 email: [email protected] ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Sam Vekemans Sent: January 29, 2009 3:32 AM To: [email protected]; [email protected] Subject: [Talk-ca] uStream.tv - GeoBase Import to OpenStreetMap Hi all, After doing 2 broadcasts, 1st being a test. Fortunately, some good feedback. For the 2nd broadcast, i used the white board, and was able to draw out and try to explain in picture-form what the problem is. So now, for the next one, I will be able to further get into it, and try to hammer out all the objections, and hopefully it will be able to produce more ideas. :) I haven't heard back yet from the latest ideas, as it looks like osm2shp is still in the works. as well as osm2csv. I still need to earn what the capabilities are for RoadMatcher, as well as what the limits are to JOSM with looking at duplicates. The only other application i know of which can successfully merge CSV files is GED. GED From Ancestry.org project, where each entry has a unique ID number, however, there is smart matching where it links First/Last names and Birth/Death dates and relations / spouse/kids, to try to identify ancestors. So it copies the information from 1 contact and adds them to another, then removes/merges duplicates. ... i'll try to contact to makers of that program, perhaps they have an idea. Oh ya, for the contacts example, it looks like gmail will have the contact-sync soon. Perhaps its more difficult then i thought? Cheers, Sam Vekemans Across Canada Trails
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