I reviewed all changesets of the last days which added new nodes to OSM and observed a higher than usual number of duplicates added by users. Therefore, I had a look on the Wheelmap web app and found that a significant number of POIs which are mapped as ways in OSM are missing.
I checked if it only applies to recently added ways (after the change to HTTPS on planet.openstreetmap.org on 8 May 2018) but even old POIs are affected.
What I have found out so far:
It does not matter if the way has a wheelchair tag or not but ways with wheelchair tag are usually present at Wheelmap. (I assume because a lot of wheelchair tags is still added by Wheelmap users)
It does not matter if there is a node with the same ID in OSM. It does matter that node has tags or not.
I was unable to find a date after which changes to POIs did not get reflected on Wheelmap.
I have not found any way before 2016-04-30 which is missing on Wheelmap.
Wheelmap suffered that problem until 2011 or 2012 when it supported nodes only. This was fixed by adding some kind of way-to-node converter developed by Geofabrik. I recommend to check the following things:
if this tool is still running
if it was not running in spring 2016
if it is able to handle 64 bit node IDs
if it fetches files from planet.openstreetmap.org and uses HTTPS to do so (or follow redirects from port 80 to port 443)
if there is enough space on the disks and the system is not out of memory (no joke)
I reviewed all changesets of the last days which added new nodes to OSM and observed a higher than usual number of duplicates added by users. Therefore, I had a look on the Wheelmap web app and found that a significant number of POIs which are mapped as ways in OSM are missing.
I checked if it only applies to recently added ways (after the change to HTTPS on planet.openstreetmap.org on 8 May 2018) but even old POIs are affected.
What I have found out so far:
wheelchairtag or not but ways withwheelchairtag are usually present at Wheelmap. (I assume because a lot of wheelchair tags is still added by Wheelmap users)Examples for missing ways:
wheelchairbutamenity=kindergartenshop=doityourself, last modified on 2018-04-23 (still a doityourself store)shop=*since 2016-04-30 15:27, last modified on 2018-02-22 (still a supermarket)Examples for ways which are present:
shop=*since 2016-04-30 17:02amenity=post_office, name added on 2016-04-30 17:02; name is present but opening hours are missing!shop=car_repair, address added on 2016-03-20 00:19amenity=place_of_worshipsince 2016-03-21 20:36shop=*since 2016-03-19 19:56amenity=schoolshop=*since 2016-03-22 19:44shop=butchersince 2016-03-30 08:06shop=bakerysince 2016-03-20 17:20, last modified on 2017-08-23shop=bicycleamenity=kindergarten, last modified on 2018-05-22wheelchairbutamenity=schoolI have not found any way before 2016-04-30 which is missing on Wheelmap.
Wheelmap suffered that problem until 2011 or 2012 when it supported nodes only. This was fixed by adding some kind of way-to-node converter developed by Geofabrik. I recommend to check the following things:
These are the common pitfalls.