The operations to create a building with the JOSM building-plugin shown in the picture in this post. The picture is from Github/Mapbox/Mapping and their recipe to do this is
asked 03 Apr '17, 21:38 FredrikLindseth aseerel4c26 ♦ |
A double click with the extrude tool creates the split. It's briefly mentioned on the help page: https://josm.openstreetmap.de/wiki/Help/Action/Extrude answered 03 Apr '17, 22:10 maxerickson |