On Fri, 28 Aug 2009, Tim Francois wrote:
Tim, My understanding is that many of the major highways in your trip were mapped from aerial imagery, so a 1 point per second gps trace is probably more accurate. Uploading your gpx tracks to OSM so others can see them as a datasource for tracing/ would be good. If based on your traces/having been there that you feel any roads should be adjusted in OSM that you should feel free to do so as well (respecting standard OSM map editting etiquette etc...) There is a larger project to import roads from a government database (Geobase) but right now we don't have any automated techniques for improving existing roads (just adding new ones), sometimes a good GPS trace is better than this data anyway. > Hi all, > > I live in the UK, but parents live in Calgary. This summer we went on a > somewhat extended roadtrip, taking in Alberta, BC, Yukon and Alaska. I > had my netbook and GPS mouse with me and logged pretty much the entire > trip, checking the OSM map accuracy using Navit (on Linux). Some major > roads we traveled include: > > - Trans-Canada from Calgary to Vancouver > - Highway 4(a) on Vancouver Island from Parksville (Nanaimo) to > Tofino/Ucluelet > - Highway 19 Parksville to Port Hardy (including little bit around > Telegraph Cove) > - Highway 16 from Prince Rupert to Highway 37 (Cassiar Highway) intersection > - Cassiar Highway (37) from Highway 16 up to Alaska Highway intersection > (including road to Stewart, BC and Hyder, AK) > - Almost entire Alaska Highway from Tok, AK to mile 0 in Dawson Creek > - All Highways on the Klondike loop, including: > -- Highway 2 (Klondike Highway) from Dawson City to Alaska Highway > -- Highway 11 (Silver Trail) from Stewart Crossing to Keno > -- Highway 9 (Top of the World Highway) from Dawson City to USA border > -- Relevant highways in Alaska, though that's not for this mailing list > - Dempster Highway from mile 0 into NWT > - Highway sections from Dawson Creek to Calgary (via Highway 22) > > So I have GPX files for almost the entire trip, with a point logged > every second. My questions: > 1) All of the highways are on OSM in one form or another, but I'm > assuming most were not added via GPX points. When following on Navit the > mapped road sometimes varied substantially from the actual road. Is this > a correct assumption? > 2) If 1) is correct, is it then OK to improve all these highways with > the GPX tracks? > 3) Is someone else already doing this, or is there a larger project > ongoing under which this should be maintained? > > Any info/input is gratefully received - I don't want to start updating > things and then realise I'm treading on someone else's toes!! > > Thanks > Tim > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-ca > _______________________________________________ Talk-ca mailing list Talk-ca@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ca
