As the original importer of this data, I support Paul's proposal to selectively delete the larger residential areas, which mostly are too broad to be in OSM. I know the farm data has its problems, especially in the earlier counties where I didn't fully realize how to use techniques to fully optimize the data and split it up more first. But there is a lot of good useful data mixed in with the bad data. The strength of the data is the farms and these data are generally high quality. People have expressed to me that the data is hard to edit in the areas that it is too vast, and I do apologize for the extra work this has caused. Originally I left in a lot of what FMMP defined as "urban land." These often included a wide variety of features that were split apart a lot better in later imports done.
For better or for worse, California is no longer a barren wilderness but has blossomed into a flower full of color and life. I always am open to comments and critisms and working with others to make the data better. Nathan > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 14 Jun 2013 15:28:50 -0700 > From: Paul Norman <penor...@mac.com> > To: OpenStreetMap US Talk <talk-us@openstreetmap.org> > Subject: [Talk-us] Cleaning up California FMMP "residential" > Message-ID: <005901ce694e$8c1b2d80$a4518880$@mac.com> > Content-Type: text/plain; charset=us-ascii > > I've been doing some California landuse and have come across a lot of > landuse=residential imported from FMMP which is clearly wrong. The > landuse=residential covers entire cities, including commercial, industrial, > retail, parks, schools, golf courses, airports, and pretty much anything > within city limits. > > It's hard to be certain because whatever was done doesn't match the > documentation at http://wiki.openstreetmap.org/wiki/California_Farms but > it > appears that data corresponding to any urban area was imported as > landuse=residential. > > Given that this is a systemic problem with this imported data and the > problem originates with the import conversion, I think the best approach to > fix it is a mechanical edit. Given that the data is 1.5 years old without > being cleaned up, I believe it is the best option. > > To this end, I propose removing v1 imported ways/multipolygons from FMMP > with FMMP_modified=no, FMMP_reviewed=no, landuse=residential, and either > description=other land or description=urban land, starting with ways > > about > 500 000 square Mercator meters (exact value subject to change). > > This would be about 750 areas. > > There are about 3000 smaller areas that would need dealing with later, but > it'd be nice to get the large hard to edit ones cleaned up first. > > >
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