perimeter

From spatstat v1.41-1 by Adrian Baddeley

Perimeter Length of Window

Computes the perimeter length of a window

Keywords: spatial, math

Usage

perimeter(w)

Arguments

w: A window (object of class "owin") or data that can be converted to a window by as.owin.

Details

This function computes the perimeter (length of the boundary) of the window w. If w is a rectangle or a polygonal window, the perimeter is the sum of the lengths of the edges of w. If w is a mask, it is first converted to a polygonal window using as.polygonal, then staircase edges are removed using simplify.owin, and the perimeter of the resulting polygon is computed.

Value

A numeric value giving the perimeter length of the window.

Examples

perimeter(square(3))
  data(letterR)
  perimeter(letterR)
  if(interactive()) print(perimeter(as.mask(letterR)))

Documentation reproduced from package spatstat, version 1.41-1, License: GPL (>= 2)

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