perimeter

Perimeter of polyshape

Syntax

P = perimeter(polyin)

P = perimeter(polyin,I)

P = perimeter(polyin) returns the perimeter of a polyshape object, which is the sum of the lengths of its boundaries.

P = perimeter(polyin,I) returns the perimeter of the Ith boundary of polyin.

This syntax is only supported when polyin is a scalar polyshape object.

Create a polygon with one hole, and compute its perimeter.

V = [0 0; 0 2; 2 2; 2 0; NaN NaN; 0.5 0.5; 0.5 1.5; 1.5 1.5; 1.5 0.5];
polyin = polyshape(V);
plot(polyin)
axis equal

Figure contains an axes object. The axes object contains an object of type polygon.

P = perimeter(polyin)

P = 
12

Input polyshape, specified as a scalar, vector, matrix, or multidimensional array.

Data Types: polyshape

Boundary index, specified as a scalar integer or vector of integers. Each element of I corresponds to a single boundary of the input polyshape.

Usage notes and limitations:

Introduced in R2017b