Hi Stewart, all, From talking to some Canadian (provincial and local) government agency folks at a conference recently I got the sense that the open data landscape is pretty different than here in the US (which is again very different from most places in Europe where I am from originally).
The aerial route seems tricky from what you’re telling me. Unless we get access to a more up to date commercial resource. I wonder what opportunities the more recent versions of Canvec / Canvec+ road layers offer to find and complete newer roads in OSM. Has there been much effort into looking at that? The OSM folks here at Telenav where I work have built a conflation engine that may help integrate newer data into OSM and we could try that out on a smaller area. Martijn > On Jun 22, 2016, at 6:29 PM, Stewart C. Russell <scr...@gmail.com> wrote: > > Hi Martijn, > >> I am wondering if you know of any more recent aerial imagery that may be >> available? Or other suggestions to fill in these missing roads? (We have >> found many, many cases in Canada alone) > > We don't have a national mapping agency in Canada that gives everything > away for free. Aerial imagery is typically carried out every couple of > years by the provinces, but in agricultural areas only. This is not free > and tends to cost anything from $10-150 / sq km just to see. Coverage is > spotty, and depends on the province's priorities. > > Within 10 miles of the Great Lakes (so, not in your example) we used to > have access to wonderful USGS imagery. We can no longer see it in > Canada, although I suspect the images are still collected and may be > geofenced. Can't have free data getting in the way of Provincial cost > recovery, can we? > > cheers, > Stewart > > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca _______________________________________________ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca
