Hi Sam, Thanks for your feedback. I agree with your suggestion to remove the ID. It is simply unmaintainable by us. I also saw that many of them were the same. This was already before my script started splitting large areas up.
The addition of canvec:sourceDate (valdate in the DB) is a good idea as well. Since it is an 8 char string, I'll leave it untouched. (Shp2osm.jar should strip any spaces though.) Note that the validation date of the wooded areas in the area I uploaded is "1982". By the way, should the source reflect the current year (2010)? I don't think this is necessary, since the import was started in 2009, although not much progress has been made so far. Cheers, Frank Sam Vekemans wrote: > http://www.openstreetmap.org/browse/relation/393821 > > attribution = Natural Resources Canada > canvec:CODE = 1240022 > canvec:UUID = cad1acc2f7794480a0c17cadeef4d3b7 > natural = wood > source = CanVec_Import_2009 > type = multipolygon > > > That looks fine. I would remove that canvec:UUID tag as since now it > is in the database it is free to edit, and to what we wish to. But > that's just me. BTW, in the USA Tiger data, the UUID was removed as > it has a 'power fit' where it was treated as more valuable than > regular users edits. That part (power fit) is not acceptable with > OpenStreetMap. > > The canvec:sourceDate=* should be added (it available in the > datasource) since that tells the users how old the data is and gives > them a way to compare the data with their own datasets (ie. from > municipalities directly) or from physical observations. Change on the > ground happens so fast that it's important to have it on all features. > > Its worth no note that this 'wooded_area' is simply just that, it has > no boundaries, it just states "at the time of surveying, this area has > trees, and the wholes (inner polygons) dont have trees". > This 'wooded area' is not a designated area, so it's neithor a > park/private land/protected area. > When you look at the yahoo imagery (and future imagery) you can easily > see what the currently status of the 'wooded_area' actually is. But > on the ground, you'll see what it's like today. > > So in sum, when your out mapping, feel free to adjust the edges of > these polygons to accurately show where in fact the 'wooded_area' is > today. And if you know what the designation of the area is. ie. > signs that say park area, you can add that in as an unfilled polygon > border. > > Great to see no edges, nice fix. > > Cheers, > Sam > > > On Sun, Jan 24, 2010 at 7:59 PM, Frank Steggink <[email protected] > <mailto:[email protected]>> wrote: > > Hi all, > > Today I have (finally) worked on large features in Canvec data > (forests, > water, etc.), and I have come up with a method how to deal with them. > This currently involves PostGIS, but maybe I'll use GEOS or another > method, so that it isn't necessary to load data in a DB. More details > will follow soon, since I need to clean up code / sort out things > a bit, > and eventually integrate it into the canvec_to_osm.py script. > > Right now I've uploaded (only) wooded areas in the Charlevoix > region in > Quebec. This already makes the map look entirely different! The result > can be found here [1]. Changesets: [2] and [3]. > > You'll see faint horizontal and vertical lines crisscrossing the area. > This is an artifact of making the features smaller (0.1 x 0.05 > degrees). > This will be dealt with with the "gamma" option which is part of > the new > Mapnik 0.7.0 release. This will probably be used in a couple of > weeks on > osm.org <http://osm.org>. See [4] for more info. > > Cheers, > > Frank > > [1] > > http://www.openstreetmap.org/?lat=47.625&lon=-70.25&zoom=11&layers=B000FTFT > > <http://www.openstreetmap.org/?lat=47.625&lon=-70.25&zoom=11&layers=B000FTFT> > [2] http://www.openstreetmap.org/browse/changeset/3707953 > [3] http://www.openstreetmap.org/browse/changeset/3708062 > [4] http://trac.mapnik.org/wiki/PolygonSymbolizer > > > _______________________________________________ > Talk-ca mailing list > [email protected] <mailto:[email protected]> > http://lists.openstreetmap.org/listinfo/talk-ca > > _______________________________________________ Talk-ca mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-ca
