F_VN_ContainerAverageVariance

F_VN_ContainerAverageVariance 1:

Calculate the average and variance of elements in a container.

Syntax

Definition:

FUNCTION F_VN_ContainerAverageVariance : HRESULT
VAR_INPUT
    ipSrcContainer : ITcVnContainer;
END_VAR
VAR_IN_OUT
    fAverage       : LREAL;
    fVariance      : LREAL;
END_VAR
VAR_INPUT
    hrPrev         : HRESULT;
END_VAR

F_VN_ContainerAverageVariance 2: Inputs

Name

Type

Description

ipSrcContainer

ITcVnContainer

Source container (Arithmetic, point and vector element types are supported. For points and vectors, the euclidean norm is used.)

hrPrev

HRESULT

HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

F_VN_ContainerAverageVariance 3: In/Outputs

Name

Type

Description

fAverage

LREAL

Returns the calculated average value

fVariance

LREAL

Returns the calculated variance value

F_VN_ContainerAverageVariance 4: Return value

HRESULT

Further information

The table below shows which functions can be used for which container type:

Types of containers

Usable functions

Containers of elements

F_VN_ContainerAverage

F_VN_ContainerAverageVariance

Containers of vectors, each with 2 elements

F_VN_ContainerAverageElementwise2

F_VN_ContainerAverageVarianceElementwise2

Containers of vectors, each with 3 elements

F_VN_ContainerAverageElementwise3

F_VN_ContainerAverageVarianceElementwise3

Containers of vectors, each with 4 elements

F_VN_ContainerAverageElementwise4

F_VN_ContainerAverageVarianceElementwise4

Required License

TC3 Vision Base

System Requirements

Development environment

Target platform

PLC libraries to include

TwinCAT V3.1.4024.54 or later

PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU

Tc3_Vision