OpenStreetMap
I recently stumbled upon Osmose which is helping me track down errors from my early days of editing.
Back in early 2014 I did quite a few CANVEC imports in southern Saskatchewan and didn’t notice immediately that my workflow was introducing problems. Rather than upload the entire CANVEC layer in JOSM, I was selectively copying element classes to a new layer. I didn’t realize that by doing that I was breaking multipolgons and introducing duplicate inner polygons and duplicate overlapping nodes. Once I noticed the problem I switched to a pruning approach, but had no easy way to locate what needed fixing.
67,000 issues to work though, but I’m optimistic there is quite a lot of overlap within that list. Fixing a single duplicate polygon could also clear up a dozen duplicate node issues at the same time.
Discussion
Comment from gecho111 on 20 February 2020 at 04:28
I got a good shortcut down for dealing with multiple nodes in the exact same spot in need of merging. First I was highlighting then pressing ‘m’. Then I noticed with them in the exact same spot you can just click one and press ‘m’, without needing to have both in the selected items window.
To really speed things up I’m taking advantage of the error validation in JOSM. If you merger some nodes in a way (seem to need at least 3) then press the upload button it will flag the errors. Expand the duplicate node errors in the validation panel and click the first one. Put one finger on the enter key and another the ‘m’ then toggle back and forth as fast as you can. You can hammer through a dozen nodes in a second or two and easier on the wrists. It only works for the ways where you merged the nodes, so the process may needed to be repeated multiple times for a given downloaded area.