A MultiPolygon is a collection of Polygon items.
In Open Geospatial Consortium (OGC), a 'simple' Polygon must be connected, so although it can have holes, it cannot have islands. If a region has islands, then SIS uses a MultiPolygon to represent it.
Click to return to www.cadcorp.com
© Copyright 2000-2017 Computer Aided Development Corporation Limited (Cadcorp).