OSM Inspector/Views/Multipolygons

The Multipolygons view in OSM Inspector shows problems with Multipolygons.

Contents 1 Overview 2 Data sources 3 Layers 3.1 Invalid Geometry 3.2 Ring not closed 3.3 Touching inner rings 3.4 Role mismatch 3.5 Duplicate Tags 3.6 type=boundary 3.7 Context 4 What you can do with this view to improve OSM data 5 Discussion 6 See also

Overview

Data sources

All data in this view is derived from OSM data.

Data for the whole world is available in this view.

Layers

The term convex hull is used as a shape that completely surrounds the multipolygon in question that is convex. This is generated by Geofabrik and will not be found in OpenStreetMap. It helps define where the problem is. The convex hull also includes the number of the relation, for example if there is a problem with relation 123456 it will be shown as text and can be viewed in the OpenStreetMap browser at http://www.openstreetmap.org/browse/relation/123456

Invalid Geometry

Ring not closed

A ring in a multipolygon must be complete and without gaps. This unconnected end nodes show where the ring stops, this is a clue as to fixing the problem, however if the end node belongs to more than one ring end, only one ring will be shown in the data layer.

Touching inner rings

Role mismatch

Duplicate Tags

type=boundary

Context

What you can do with this view to improve OSM data

Discussion

See also