Glossary for Geospatial Science

Grain Shape Index:� One of the 12 fuzzy properties that can be calculated for vector objects.� The Grain Shape Index measures shape with a minimum value approximating two for long skinny polygons, pi for circles, and four for rectangles.� The Grain Shape Index can be very large for fractals.� The equation for calculating this property is:� Grain Shape Index = Perimeter / Long Axis.