Directed K function, old and slow

We use translation edge correction.

Usage

Kest_directional_old(x, u, epsilon, r, pregraph)

Arguments

x

pp, list with $x~coordinates $bbox~bounding box

u

unit vector of direction

epsilon

Central angle for the directed cone (total angle is 2 epsilon)

r

radius vector at which to evaluate K

pregraph

A super graph for determining neighbourhoods

Value

Returns a dataframe.

Details

Compute the sector K function.

Try Kest_anin for a bit better version that does also second order inhomogeneous patterns.