566 Spatial Point Patterns: Methodology and Applications with R
joint distribution P(X,M):
regard the locations and types a s having been generated at the same
time.
A typical example is the joint analysis of a mixed woodland. Each individual tree belong s intrinsi-
cally to a specie s; the viability of each tree depends on its neighbours’ locations and their species;
hence the spatial pattern of locatio ns and species should be analysed jointly. The most general
model is a multitype po int process. We m ight assume that the proce ss is stationary, allowing us to
estimate a multitype version of the K-function, for example. The simplest null model is a homoge-
neous Poisson multitype p oint process (dubbed ‘complete spatial randomness and independence’ ...