perimeter
From spatstat v1.41-1
by Adrian Baddeley
Perimeter Length of Window
Computes the perimeter length of a window
Usage
perimeter(w)
Arguments
- w
- A window (object of class
"owin"
) or data that can be converted to a window byas.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.
See Also
Examples
perimeter(square(3))
data(letterR)
perimeter(letterR)
if(interactive()) print(perimeter(as.mask(letterR)))
Community examples
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