a measure of how clustered or evenly spaced a distribution of points on a plane is.
Rn = 2đ √ (n/A)
where đ - is the mean distance between nearest neighbours, n - is the number of points, A - is the area in which the distribution occurs
Values range from 2.15 for an evenly spaced distribution, through 1.0 for a random distribution to 0.0 for a highly clustered distribution.
Geography Dictionary & Glossary for Students \\ ITS Tutorial School (ITS) - Hong Kong.