| SGCS-package {SGCS} | R Documentation |
Three statistical spatial point pattern measures, based on a graph structure over the point pattern data.
| Date: | 2009-09-08 |
| License: | GPL v2 or later |
Functions ------------------ confun - Connectivity function cumconfun - Cumulative connectivity function clustfun - Clustering function Tfun - Triplet intensity function T
The connectivity function estimates the probability that two points distance r-apart share a graph component. Cumulative connectivity function is like Ripley's K-function but conditioned on the points sharing a graph component. Clustering function is a functional form of the non-spatial graph index, clustering coefficient. Tfun is the intensity of r-triplets.
The package currently supports only geometric graph, but such graphs as k-nearest neighbours graph can be easily included if somebody is interested.
Tuomas Rajala
University of Jyvaskyla, Finland
tuomas.a.rajala@jyu.fi
Rajala, Penttinen: Spatial clustering and graph feature statistics (working title). Schladitz, Baddeley: A Third order point process characteristic, SJS, vol 27, 657-671, 2000.