numsides

Number of polyshape sides

Syntax

N = numsides(polyin)

N = numsides(polyin,I)

Description

N = numsides(polyin) returns the number of sides of a polyshape object.

N = numsides(polyin,I) returns the number of sides of the Ith boundary of polyin.

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

Examples

Number of Polygon Sides

Create a polygon and determine its number of sides.

t = 0:0.5:2*pi;
P = [cos(t)' sin(t)'];
polyin = polyshape(P);
plot(polyin)

N = numsides(polyin)

N = 
13

Input Arguments

polyin — Input polyshape

scalar | vector | matrix | multidimensional array

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

Data Types: polyshape

I — Boundary index

scalar integer | vector of integers

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

Data Types: double | single | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using MATLAB® Coder™.

Usage notes and limitations:

• Dynamic memory allocation must be enabled for code generation.

• Name-value pair must be compile time constant.

Version History

Introduced in R2017b