https://youtu.be/87nRQHuatOE

A short tutorial of identifying and fixing errors in multipolygons when editing Open Street Map in the JOSM editor.

See also my previous video on creating and editing multipolygons in JOSM: https://youtu.be/x7SPb0JtheA

The tools used are:

• JOSM editor - https://josm.openstreetmap.de/
• “Relation Toolbox” JOSM plugin - https://wiki.openstreetmap.org/wiki/JOSM/Plugins/Relation_Toolbox (not actually used in this video, but recommended for working with multipolygons.

Documentation on MultiPolygons in the OSM wiki:

• https://wiki.openstreetmap.org/wiki/Multipolygon_Examples
• https://wiki.openstreetmap.org/wiki/Relation:multipolygon