trapz

Numerical integration of discrete data using the trapezoid rule.

Syntax

area=trapz(x,y)

Inputs

x: Values of the domain variable.; Type: double; Dimension: vector
y: Values of the range variable.; Type: double; Dimension: vector

Outputs

area: The estimated area.; Dimension: scalar | matrix

Example

x = [0:0.05:1]*pi; area = trapz(x,sin(x))

area = 1.99588597

Comments

trapz is appropriate for use with sampled data when the function is not available.