Caliper Mapping and Transportation Glossary


What is a Thiessen polygon?

Thiessen polygons are generated from a set of sample points such that each polygon defines an area of influence around its sample point, so that any location inside the polygon is closer to that point than any of the other sample points.

Thiessen polygons (also called Voronoi Diagrams) can be used to show catchment areas for a group of facilities.

GIS Software for Creating Thiessen Polygons

Maptitude Mapping Software gives you all of the tools, maps, and data you need to analyze and understand how geography affects you and your business. Define territories and areas of influence using thiessen polygons, network partitions, and other territory tools.

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What is a Thiessen Polygon/Thiessen Polygon definition: Thiessen polygons created with Maptitude mapping software

Thiessen polygons in this map show the areas that are closest to each subway stop. Anywhere in the shaded polygon is closest to the Copley subway station.