Barrie area was probably my import before we had OSM files from CanVec. Can't remember. I think the duplicate is because at the time I couldn't get an answer on what to do with the coastline. But since the lake is self contained it can probably be deleted.
Michael On Mon, May 30, 2011 at 4:33 PM, Frank Steggink <stegg...@steggink.org>wrote: > On 11-05-30 09:15 PM, Me (Gmail) wrote: > >> I've been working on improving the Barrie, Ontario area, and I'm >> trying to figure out what is going on with/what to do about Lake >> Simcoe. >> >> There are multiple CanVec-imported ways that together make up a fairly >> detailed, accurate representation of the lake. A single low-detail way >> [1] is overlapping these, and obscures the accurate detail in many >> places when rendered [2]. >> >> [1]: http://www.openstreetmap.org/browse/way/4997263 >> [2]: http://dl.dropbox.com/u/2398828/lake-simcoe-josm.png >> >> Not having much experience dealing with large or tiled objects in OSM, >> my question is if the low-resolution object is serving a purpose, and >> whether I should bother editing it so as to not overlap with the >> high-detail version, or whether it can just be deleted. >> >> Hi AJ, > > The Canvec version is clearly better, so the lowres version can be deleted. > It was probably one of the features being traced when only Landsat imagery > was available. In my opinion this cleaning up should have been done during > the import of the Canvec sheet. Otherwise this import gets more > characteristics of a "bad import" (by leaving duplicate features), which we > should prevent. (Note that there are also some people who think that user > traced features are always better than imported features, but in this case > the difference is evident, and nobody has bothered yet to trace the > shoreline from the Bing imagery.) > > What might have caused this is that Lake Simcoe overlaps several sheets, so > it can't be deleted at once. Wat I usually do is to cut the part of the > coastline which is overlapping the sheet being imported, and connect the > existing coastline to the new one. An example of this can be seen in the > southeast part of Lac Saint-Jean in Québec: [1]. This is also how I've dealt > with the Saguenay river, and also with the St. Lawrence coastline. This can > best be done asap, because you never know for sure when you continue with > the rest. It is a bit more work, but in my opinion it's much better than > confusing or even annoying others. > > Frank > > [1] http://osm.org/go/cLD8wZR-- > > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-ca >
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