markcorr_anisotropic: Anisotropic mark correlation function, direction vector...

View source: R/ani-markcor.R

markcorr_anisotropicR Documentation

Anisotropic mark correlation function, direction vector formulation

Description

Estimate the anisotropic mark correlation function (2d and 3d), as defined in Stoyan 1991, f. 5.4. (without the additional 'a'-marks)

Usage

markcorr_anisotropic(
  x,
  marks = NULL,
  r,
  f = function(a, b) a * b,
  directions,
  bw,
  adjust = c(1, 1),
  correction = "translation",
  bootsize = 1e+05,
  divisor = "d",
  normaliser = NULL
)

Arguments

x

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

marks

if x is not marked (x$marks is empty), use these marks

r

Evaluate at these lengths.

f

test function of the form function(m1, m2) ..., returning a vector of length(m1)

directions

Matrix of directions, in unit vectors, one direction per row. Default: along axes.

bw

Bandwidths of epanechnicov kernels. Vector of two values, one for ranges and one for angles.

adjust

If bw not given, use bw=adjust[1]*0.15/lambda^(1/dim) for range and bw=adjust[2]*0.15*pi for angle

correction

"none" or "translation". Translation only for rectangular box.

bootsize

bootstrap size for estimating the normaliser if not given.

divisor

either "d" or "r". Divide by dist(i,j) ("d") instead of r ("r")?

normaliser

normalising constant under independent marking. If NULL, estimated with bootstrap.

Details

Default bandwidth: bw=adjust*0.15/lambda^(1/dim) for range and bw=adjust*0.15*pi for angle.


antiphon/Kdirectional documentation built on Feb. 13, 2023, 6:26 a.m.