Hi Jess, just wondering -- What's the thinking behind changing Building A from a normal building way to a single-member multipolygon?

gift shop, added

Do you know if Doyers is oneway for bikes? I was here yesterday and saw "no entry expect bicycles" signage on the south end, which would seem to suggest that it isn't.

see comments in osm.org/changeset/20449020

I ran into an odd-looking building in Manhattan (osm.org/way/247866947 but I've fixed it now so it's not so odd anymore) that led me to this changeset. This comment isn't for ingalls (hi though!) but for anyone else who might find themselves spelunking in this same rabbit hole.

In this changeset, address nodes were merged into address-less buildings. For each building, this involved modification of three different objects: 1) deleting of one node from each building 2) moving the address node into the deleted node's location and removing all the address tags 3) adding address tags to the building, and swapping in the relocated address node for the deleted node in the building's node list.

For reasons unknown (obviously nobody complained here), this changeset was then reverted by the OSM Data Working Group in changeset 22001873. But this reversion was buggy and caused a lot of damage. Most of the buildings went back to their previous state without any problems, but for some, only #1 and #2 (the nodes) were reverted, not #3 (the building). Those buildings kept the address tags that this changeset had added, which isn't a big problem. But they also kept their modified node list, which resulted in seriously distorted building footprints because the address nodes were moved back to their previous locations inside the building perimeter.

Zoom into https://overpass-api.de/achavi/?changeset=22001873 and see all the red outlines for a good illustration of this problem.

It appears most of these distorted footprints have been cleaned up over the last 8 years (see https://overpass-api.de/achavi/?changeset=22340943 for example) but possibly some are still broken, like osm.org/way/247866947 was.

Happy mapping, J

Hi there. Please consider using geographically smaller changesets! Thanks, J

That's odd... I was sure I'd already fixed this. Looks like I didn't manage to actually hit the upload button? 🤷 Also fixed the phone & changed from fitness_centre to physiotherapist

Hi there -- I and other local mappers would appreciate if you could give accurate changeset descriptions instead of re-using the same one over and over. Thanks, J

Intentional-ish? QAing my own work in the past, I've found that changing an element from one business to another on a mobile device is an error-prone process -- in particular that an old (now incorrect) tag can evade deletion on the small screen and survive in the new POI. To avoid this I'll sometimes simply delete all the tags and start from scratch.

I didn't bother re-adding the address tags because they're not neccessary when a node is inside a correctly tagged single-address building.

Miraculous. I've had such poor luck with DOB NOW (properties I'm interested in never seem to be listed there) that I stopped trying.

I've been using the BIS tool, made a writeup of a simple search at osm.org/user/jmapb/diary/398764 and I'm planning a second post that will show some of the other functionality. In the meantime I'm working on finding as many shortcuts as possible through the public datasets and APIs, because using BIS is tedious.

Thanks... the address 135 checks out with the original node that you deleted, and it being a dormitory checked out with the bogus "name=Pratt Dorm" tag. I had added that fixme because I wanted to survey to see if it's actually run by Pratt, since it wasn't included on the campus map at the time. But it's on Pratt's map now, so I've added it to the campus multipolygon.

What's your method for finding the building heights? I'm working on improving my workflow for this at the moment, and just want to make sure I'm not missing any existing shortcuts.

Regarding osm.org/node/5209298564/history which you replaced with osm.org/way/1028868325 -- did you see what this building actually is?

Hi jessbeutler -- I'd appreciate it if you could leave actual changeset comments describing the changes made, instead of just a list of hashtags.

Is that possible, using this "teachosm" project?

Thanks, J

Re: osm.org/node/5474081138 , this is an independent barbershop, not part of a chain. Fixed in changeset 118068551.

Nope I've been completely out of the loop on this nutty drama. I just happened by and thought it looked odd.

Based on what I saw, I think living street is correct.

Cheers, J

This is an odd one... official DOT signs clearly say "DO NOT ENTER except pedestrians bicyclists & local deliveries." But private vehicles are still using the street for parking, and the Dept of Sanitation alternate side parking signs are still up without any kind of counterindications.

Do you know if this is planned as a permanent change? As of now the signs aren't mounted on the pavement, just sitting in giant flower pots.

Looks like ownership=private is more obscure than I'd realized -- I'd remembered discussing it on the tagging list in 2020, but it was actually talk-us ("access=private on driveways" on https://lists.openstreetmap.org/pipermail/talk-us/2020-July/thread.html ). Mateusz K documented it on the wiki just a year ago.

To my best understanding, "no thru traffic" is exactly what access=destination is for. My guess is that the original complaint was caused by routing software sending traffic along Elting Lane as a shortcut between Bearsville and points south (though the imported road name being wrong didn't help, no doubt) and in theory access=destination should prevent this -- but I'll leave it as =private for now, pending a better consensus.

Thanks, J

Howdy... signs on Elting Lane say "Private road, no thru traffic." To me this sounds like ownership=private + access=destination but I noticed this changeset comment & wanted to check first -- don't want to be undermining the DWG ;)

Sure, seems appropriate based on the wiki definition

Hello adrumillion -- the Brooklyn Public Library Central Branch is already on the map ( osm.org/way/250229992 ) so I've deleted this duplicate.

Also, it would be extremely helpful to your fellow mappers if you could describe each edit with a changeset comment, and also describe your sources of information.

Thanks, jmapb