Learn R Programming

spatstat.geom (version 3.3-2)

selfcut.psp: 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)

Value

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

A.

The result also has an attribute "camefrom" indicating the provenance of each segment in the result. For example camefrom[3]=2 means that the third segment in the result is a piece of the second segment of A.

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.

Author

Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner rolfturner@posteo.net and Ege Rubak rubak@math.aau.dk.

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.

See Also

selfcrossing.psp

Examples

Run this code
  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)))

Run the code above in your browser using DataLab