polyarea (MathScript Function) (Windows, Not in Base Package)

LabVIEW 8.5 Help
August 2007

NI Part Number:
371361D-01

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Member of the geometry class.

Syntax

polyarea(x, y)

a = polyarea(x, y)

Calculates the area of a polygon.

Name	Description
x	Specifies the x-coordinates of the polygon. length(x) must be greater than 2. If x is a matrix, each column of x specifies the x-coordinates of a polygon.
y	Specifies the y-coordinates of the polygon. If y is a matrix, each column of y specifies the y-coordinates of a polygon. size(y) must equal size(x).

Name	Description
a	Returns the area of the polygon.

z = 0:pi / 4:2*pi;
x = cos(z);
y = sin(z);
plot(x, y)
polyarea(x, y)