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FlexPro Documentation 2025

Erf

Calculates the Gaussian error function.

Syntax

Erf(Number)

 

The syntax of the Erf function consists of the following parts:

Part

Description

Number

The argument for the function.

All data structures are allowed. All real data types are permitted.

Remarks

The data type of the result is always 64-bit floating point.

The structure of the result corresponds to that of the argument Number. The calculation is done element-by-element where appropriate.

The result has the unit 1, if Number has a unit. Otherwise, it has no unit.

For aggregate data structures, only the Y component is calculated.

The Gaussian error function is defined as follows:

The following illustration shows the course of the function within the interval [-3, 3]:

If the argument is a list, then the function is executed for each element of the list and the result is also a list.

Available in

FlexPro Basic, Professional, Developer Suite

Examples

Erf(1)

Results in 0.8427.

Dim x = Series(-3, 3, 0.01)
Signal(Erf(x), x)
 

Calculates a signal with the course of the curve in the interval [-3, 3].

See Also

Gamma Function

LogGamma Function