Point pattern analysis
Lee De Cola's Wikipedia page.
Point Pattern Analysis
PPA is the study of the spatial arrangements of points in (usually 2-dimensional) space[1].
Location
A point in 2 dimensional space is a pair of real numbers (x1, x2) specifying location on the 2 orthogonal axes of a coordinate system.
Randomness
A fundamental problem of PPA is inferring whether a given arrangement is merely random or the result of some process. The picture illustrates patterns of 256 points using four point processes. The clustered process results in all points having the same location.
Point events
Citations
References
- ^ Getis and Boots
Cressie, N. A. C. and C. K. Wikle (2011) Statistics for spatio-temporal data. Hoboken, N.J., Wiley. ISBN 9780471692744