# simplify.owin

0th

Percentile

##### Approximate a Polygon by a Simpler Polygon

Given a polygonal window, this function finds a simpler polygon that approximates it.

Keywords
spatial, math
##### Usage
simplify.owin(W, dmin)
##### Arguments
W

The polygon which is to be simplied. An object of class "owin".

dmin

Numeric value. The smallest permissible length of an edge.

##### Details

This function simplifies a polygon W by recursively deleting the shortest edge of W until all remaining edges are longer than the specified minimum length dmin, or until there are only three edges left.

The argument W must be a window (object of class "owin"). It should be of type "polygonal". If W is a rectangle, it is returned without alteration.

The simplification algorithm is not yet implemented for binary masks. If W is a mask, an error is generated.

##### Value

Another window (object of class "owin") of type "polygonal".

owin

##### Aliases
• simplify.owin
##### Examples
# NOT RUN {
plot(letterR, col="red")