edges {spatstat.geom}

Extract Boundary Edges of a Window.

Description

Extracts the boundary edges of a window and returns them as a line segment pattern.

Usage

  edges(x, ..., window = NULL, check = FALSE) 

Arguments

x

A window (object of class "owin"), or data acceptable to as.owin, specifying the window whose boundary is to be extracted.

...

Ignored.

window

Window to contain the resulting line segments. Defaults to as.rectangle(x).

check

Logical. Whether to check the validity of the resulting segment pattern.

Details

The boundary edges of the window x will be extracted as a line segment pattern.

Value

A line segment pattern (object of class "psp").

Author(s)

Adrian Baddeley [e-mail], Rolf Turner [e-mail] and Ege Rubak [e-mail].

See Also

perimeter for calculating the total length of the boundary.

Examples

  edges(square(1))
  edges(letterR)