Join (online)

Compute the geometric union of multiple polygons. The sample uses the static method GeometryEngine::join(), one of several methods in the GeometryEngine class that create a new geometry through a geometric calculation on one or more existing geometries. The sample displays parcel polygons on the map. Select two or more parcels, which turn yellow when selected. Click Perform Join. The sample creates a single polygon from the selection set. Even polygons in the selection set that are spatially disjoint are included in the new logical polygon. Clicking on any portion of the new polygon will select all parts of the new polygon.