Hi, Would anybody object to just killing the source tag, and putting it on the changeset like would be done if it was a current import. It would save 20 megs on the uncompressed MA snapshot. I 100% agree would be good to do, but did not propose this on the first go to avoid any controversy.
There are two different building data sets. These buildings are from the old data set that is called "MassGIS Data - Building - Footprints (2-D, from 2002 LiDAR data)", it was just around Boston. The new data set that covered the entire state is "MassGIS Data - Building Structures (2-D, from 2011-2012 Ortho Imagery)", it was what was imported this spring. Boston has the 2002 data set, and the rest of the state is from 2011. I expect that they will have a third data set in 7 or 8 years, It is probably a good idea to use the full name of the data set. This is also why we should not be using URL's in our source tags. They are fragile. I don't really know when the address data is coming. Even if it was released right now, I need to finish up the lake project (which this is really part of in step 2), so it would sit for a couple of months. To give people an idea of the scale of the over tagging issue in MA. Removing just the import and attribution tags on all of the road nodes will save about 300 megs from snapshot db size. This is not part of this first step, but is something that eventually, we would like to do. We have 3,329,462 of these. http://www.openstreetmap.org/browse/node/72320345 Thanks Jason On Tue, Aug 13, 2013 at 5:04 PM, Paul Norman <[email protected]> wrote: >> From: Serge Wroclawski [mailto:[email protected]] >> Sent: Sunday, August 11, 2013 5:05 PM >> Subject: Re: [Imports-us] Automated Edit Proposal, remove area=yes, and >> fix broken source tag in US Massachusetts >> >> [...] >> >> This is generally in line with the issues we had with TIGER tags, and >> why we still haven't just gone ahead and removed all of the tags we >> dislike, opting instead to wait until a change is made to them. > > One big difference between this an TIGER is that the TIGER tags could be > automagically removed by the editors, but these can't because we don't > want to remove all area=yes, only the area=yes from the import. > > I'm in favour, provided we're not getting address data in the near future. > >> and to replace the source tag value with the official name >> of the data set used for the import: "MassGIS Data - Building >> Footprints (2-D, from 2002 LiDAR data)". > > Is the official name what is most meaningful to mappers? Would something > short like source=MassGIS Building Footprints be better? > > Keep in mind the usual cautions about the usefulness of source=* > >> The area tag is not needed anymore > > It was actually never needed, although strictly speaking not wrong. > _______________________________________________ Imports-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/imports-us
