Second order orientation density

As in Illian et al 2008, Ch. 4.5.3.

Usage

fry_orientation_density(x, r1, r2, alpha, bw = 0.35)

Arguments

x

point pattern

r1

lower limit of the ranges

r2

upper limit of the ranges

alpha

angles to estimate the density at, on range [0, pi]

bw

Bandwidth (half-width) for the Epanechnicov kernel.