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Data Quality Assurance for OpenStreetMap is a guideline to provide you with how to maintain a good quality data for OpenStreetMap from understanding what is quality assurance, how to draw certain object using JOSM, such as buildings complex, how to create an administration boundary using relation, learning warnings and errors in JOSM, et cetera. This guide is suitable for experienced mappers who are already mapping a lot in OpenStreetMap and want to learn how to do quality assurance in OpenStreetMap.
Level: Intermediate – Advance