Computes the tests of segregation using nearest neighbour contingency tables introduced
by Philip Dixon in his paper "Testing spatial segregation using a nearest-neighbor contingency table",
Ecology, 75, p.1940-1948 (1994). The tests are an improvement on the Pielou's test of segregation.
The test is defined only for two-type spatial pattern.
Usage
dixon(X, prepR=0)
Arguments
X
Bivariate i.e. 2-type point pattern (see package 'spatstat')
prepR
Computes first the geometric neighbours with this distance, and then finds the nearest neighbours.
Details
See the paper by Dixon for details.
References
Philip Dixon: "Testing spatial segregation using a nearest-neighbor contingency table",
Ecology, 75, p.1940-1948 (1994).