Returns the area below the curve of the signal S between x_start and x_end (calculated with Trapezoidal method). The parameter x_start and x_end are optional. The function area(S) returns the area below the curve of the whole signal S. If S is complex the result is complex with the result of the area function of the real part of S in the real component and the result of the area function of the imaginary part of S in the imaginary component. The return value is scalar if the first argument is xy-data, otherwise the function returns a vector.

If S is a signal with the abscissa x and channel y with n values, then the result is defined by

Syntax

area(S [,x_start,x_end])

Types

Calculator Input

Use the area button to complete the operation.

Examples

ID	Description	Type	Value	Expression
S		REAL SIGNAL		signal([1,2,4,5,6],[1,2,5,6,7])
aS	Result	REAL VECTOR	(20.5)	area(S)
aS2	Result	REAL VECTOR	(12.5)	area(S,1.5,5)