R: Cut Line Segments Where They Intersect

selfcut.psp {spatstat}

R Documentation

Cut Line Segments Where They Intersect

Description

Finds any crossing points between the line segments in a line segment pattern, and cuts the segments into pieces at these crossing-points.

Usage

selfcut.psp(A, ..., eps)

Arguments

`A`	Line segment pattern (object of class `"psp"`).
`eps`	Optional. Smallest permissible length of the resulting line segments. There is a sensible default.
`...`	Ignored.

Details

This function finds any crossing points between different line segments in the line segment pattern A, and cuts the line segments into pieces at these intersection points.

A crossing point occurs whenever one of the line segments in A intersects another line segment in A, at a nonzero angle of intersection.

Value

Another line segment pattern (object of class "psp") in the same window as A with the same kind of marks as A.

Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.

Examples

  X <- psp(runif(10), runif(10), runif(10), runif(10), window=owin())
  Y <- selfcut.psp(X)
  n <- nsegments(Y)
  plot(Y %mark% factor(sample(seq_len(n), n, replace=TRUE)))

[Package spatstat version 1.56-0 Index]