Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

a donut polygon is a polygon with one or more holes in it. Such a feature is regarded as a complex geometry, having an outer ring of coordinates, and one or more inner rings of coordinates that represent the (donut) holes. An example of a donut polygon would be a lake with an island, the extent of the water in the lake is the polygon and the hole is the island.

There is no tag wiki for this tag … yet!

Tag wikis help introduce newcomers to the tag. They contain an overview of the topic defined by the tag, along with guidelines on its usage.

All registered users may propose new tag wikis.

(Note that if you have less than 20000 reputation, your tag wiki will be peer reviewed before it is published.)

history | excerpt history