R: Extract Boundary Edges of a Window.

edges {spatstat.geom} | R Documentation

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

### See Also

`perimeter` for calculating the total length of the boundary.

### Examples

      edges(square(1))
      edges(letterR)

[Package spatstat.geom version 2.3-2 Index]