Ksph: A modification of the Ksphere function
In adchSTATS/spatstatsphadd: Additions to spatstat

Description Usage Arguments Details Value Author(s)

Function that calculates the inhomogeneous K-functio as well as the lambdavalues required by spherstat

1 2	Ksph(X, r = NULL, rmax = NULL, nrval = 128, correction = "iso", intenss = NULL, ...)

`X`	An object of class `pps`
`r`	Optional. Numeric vector of radii at which K(r) will be evaluated.
`rmax`	Optional. Maximum value of argument r for which Ksph(r) will be estimated.
`nrval`	Optional. Number of values of r for which Ksph(r) will be estimated.
`correction`	Character string or character vector specifying the choise of edge corrections.
`intenss`	Optional. A function or vector representing the intensity at the observed locations. Only applicable for inhomgeneous point processes.
`...`	Additional arguments passed to `intenss` if `intenss` is a function.

This function has been implemented since Ksphere needs an argument lambdavalues when calculating the inhomogenious K-function. Hence, when applying the envelope function from spatstat we need to supply additional information for each point pattern for which K(r) should be calculated. That is at this point not possible. This function calculates the lambdavalues and the applies Ksphere. The lambdavalues are calculated based on the function FUN.

If X$window$type == "sphere" then no edge correction is done eventhough correction = "iso".

An object as returned by Ksphere. An fv object.

Andreas Christoffersen andreas@math.aau.dk

adchSTATS/spatstatsphadd documentation built on May 28, 2019, 3:54 p.m.