forgot talk-ca On Mon, Jul 12, 2010 at 8:24 PM, Michael Barabanov < [email protected]> wrote:
> GPS tracks aren't the only source. There's also Yahoo. There's local > survey (for things like oneyway=yes that isn't present in geobase). > Also, some people choose not to upload GPS they used for editing. I think > a good idea would be to see if the import was the last edit for the data to > be deleted, or if there were edits done after the geobase import. > > > On Mon, Jul 12, 2010 at 7:25 PM, G. Michael Carter > <[email protected]>wrote: > >> Since I've had 100% accuracy to my known areas on CanVec data (well >> within 5 metres anyways) I'd tend to trust it, over a change to GeoBase data >> that has no supporting GPS Tracks. :-) >> >> I am comparing it to the GPS tracks as I go, but like I said there is many >> areas where there is no GPS tracks to follow. Also, something I've >> noticed, CanVec data takes into account bends in the road where, in the >> areas I'm doing, GeoBase just has a straight line. (Blind line in >> Orangeville is one such road) >> >> I'm sure I'll probably replace some "more" accurate data somewhere, but >> the frequency should be pretty low, and with no supporting GPS tracks, or >> quoted source, how do we tell anyways? >> >> Mikey >> >> >> >> On 12/07/10 06:35 PM, Michael Barabanov wrote: >> >> My concern would be with 3. It is possible that someone has edited >> imported Geobase data after the import. >> >> On Fri, Jul 9, 2010 at 8:51 AM, G. Michael Carter <[email protected]> >> <[email protected]> wrote: >> >> >> Sam always says I should let people know what I'm up to. Today I'm >> actually going to listen... ;-) >> >> I'm working in three areas currently, outward in circles around: Orangeville >> (040P), Pickering (030M), and Rock Point PP (030L). (and trying to pull in >> Lake Ontario shore line) >> >> I'm creating some duplicate roads, temporarily, in the process. I wanted >> to detail my process here in case anyone notices them and starts scratching >> their head. >> >> The process I'm following: >> >> 1. Remove all existing OSM objects from CanVec grid. (mostly stuff I've >> already uploaded) >> 2. Merge with existing OSM data on the layer. >> 3. Delete any "attribution:GeoBase highway=*" roads. Trying to preserve >> any roads that CanVec doesn't have but it's hard since a lot of the areas >> I'm doing don't have any GPS tracks. >> 3a. Where the duplicates come in... I'm leaving any roads that go off grid, >> at least to an area I haven't processed yet. Then when I get to that area I >> remove/merge them. >> 4. Go over the area and merge/delete any roads manually added or that have >> no source (where no GPS track) >> 5. Merge any duplicate objects, that I missed or previously existed. >> >> Areas I'm staying away from: Toronto! I'm not going near that one, too much >> existing or conflicting data. I'll let someone living in Toronto to pick up >> that mess. :-) >> >> Mikey >> >> _______________________________________________ >> Talk-ca mailing >> [email protected]http://lists.openstreetmap.org/listinfo/talk-ca >> >> >> >> -- >> *G. Michael Carter* >> Contact: H: 1-519-940-8935 | W: 1-905-267-8494 | M: 1-519-215-1869 | F: >> 1-519-941-0009 >> Google Talk: xmpp:[email protected] >> >> >> <http://www.openstreetmap.org/?lat=43.9216&lon=-80.105&zoom=14&layers=B000FTF><http://livedvd.carterfamily.ca/> >> > >
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