>I think a super good first step would be try and ensure that future imports are done diligently and don't introduce new issues.
I think that is a reasonable way forward, and I concur with the rest of your post. I think we need to identify which parts of CANVEC are giving concern, each province is a different mixture of data sources, I suspect it is the forest and land use that are the most problematic. The older tiles had a problem in that a highway would reach the edge of the tile and there would be a matching highway on the next tile but there was no connection. I spent many a happy hour, too many of them, merging nodes so routing would work. I think the cities have been cleaned up but more rural areas still have the odd one or two to do. Probably what would make a lot of sense as a next step is to grab the provincial OSM dumps, chop them up into manageable portions then load them up into JOSM and run a modern validation on them. Cheerio John On 1 September 2016 at 19:13, Frederik Ramm <[email protected]> wrote: > Andrew, > > On 09/02/2016 12:47 AM, Andrew Lester wrote: > > If people from outside of Canada have decided that our data is so bad > > that it needs to be completely wiped out in its entirety, then I guess > > we're going to have to do something drastic to try to prevent this. > > I think a super good first step would be try and ensure that future > imports are done diligently and don't introduce new issues. (This might > be the "better documentation" step that Paul mentioned.) It really > shouldn't be too hard to detect whether your planned import causes > overlapping lakes and forests, but there needs to be an agreement that > these things matter and that you cannot simply upload "because if CanVec > says that forest and water overlap then this must be true". > > Then one could take stock of existing issues and make a plan on how to > fix them. > > Whether fixing existing issues will necessitate the wholesale removal of > some imports is something that should be decided down the line; I know > too little about CanVec imports to say whether some problems are > systemic in the data source, or certain regions, or just introduced by > clumsy importers. Any large-scale removal of imported data (perhaps to > replace it with new, better-imported data) would also have to take into > account potential manual work that has been performed on the imported by > mappers with local knowledge and it would be sad to lose that. > > Bye > Frederik > > -- > Frederik Ramm ## eMail [email protected] ## N49°00'09" E008°23'33" > > _______________________________________________ > Talk-ca mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-ca >
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