Kmodel {spatstat} | R Documentation |
Returns the theoretical K function or the pair correlation function of a point process model.
Kmodel(model, ...) pcfmodel(model, ...) ## S3 method for class 'kppm' Kmodel(model, ...) ## S3 method for class 'kppm' pcfmodel(model, ...)
model |
A fitted cluster point process model, typically obtained from
the model-fitting algorithm |
... |
Ignored. |
For certain types of point process models, it is possible to
write down a mathematical expression for the K function
or the pair correlation function of the model. In particular this
is possible for a fitted cluster point process model (object of
class "kppm"
obtained from kppm
).
The functions Kmodel
and pcfmodel
are generic.
Currently the only method is for the class "kppm"
.
The return value is a function
in the R language,
which takes one argument r
.
Evaluation of this function, on a numeric vector r
,
yields values of the desired K function or pair correlation
function at these distance values.
A function
in the R language,
which takes one argument r
.
Adrian Baddeley Adrian.Baddeley@csiro.au http://www.maths.uwa.edu.au/~adrian/ and Rolf Turner r.turner@auckland.ac.nz
data(redwood) fit <- kppm(redwood, ~x, "MatClust") K <- Kmodel(fit) K(c(0.1, 0.2)) curve(K(x), from=0, to=0.25)