QOpcUaAxisInformation Class | Qt OPC UA 6.4.1

- Qt 6.4
- Qt OPC UA
- C++ Classes
- QOpcUaAxisInformation
- Qt 6.4.1 Reference Documentation

# QOpcUaAxisInformation Class

The OPC UA AxisInformation type. More...

Header: | #include <QOpcUaAxisInformation>
CMake: | find_package(Qt6 REQUIRED COMPONENTS OpcUa) target_link_libraries(mytarget PRIVATE Qt6::OpcUa)
qmake: | QT += opcua

- List of all members, including inherited members

## Public Functions

| QOpcUaAxisInformation(const QOpcUaEUInformation &engineeringUnits, const QOpcUaRange &eURange, const QOpcUaLocalizedText &title, const QOpcUa::AxisScale &axisScaleType, const QList<double> &axisSteps)
| QOpcUaAxisInformation(const QOpcUaAxisInformation &rhs)
QOpcUaAxisInformation & | operator=(const QOpcUaAxisInformation &rhs)
QOpcUa::AxisScale | axisScaleType() const
QList<double> | axisSteps() const
QList<double> & | axisStepsRef()
QOpcUaRange | eURange() const
QOpcUaEUInformation | engineeringUnits() const
void | setAxisScaleType(QOpcUa::AxisScale axisScaleType)
void | setAxisSteps(const QList<double> &axisSteps)
void | setEURange(const QOpcUaRange &eURange)
void | setEngineeringUnits(const QOpcUaEUInformation &engineeringUnits)
void | setTitle(const QOpcUaLocalizedText &title)
QOpcUaLocalizedText | title() const
QVariant | operator QVariant() const
bool | operator==(const QOpcUaAxisInformation &rhs) const

## Detailed Description

This is the Qt OPC UA representation for the OPC UA AxisInformation type defined in OPC-UA part 8, 5.6.6. It contains information about an axis which can be used for multiple purposes. A common use case could involve the plotting of display data. The engineering units and the title are used for the text on the plot, range, axisScaleType and axisSteps provide the scaling and the axis ranges of the plot.

## Member Function Documentation

### QOpcUaAxisInformation::QOpcUaAxisInformation(const QOpcUaEUInformation &engineeringUnits, const QOpcUaRange &eURange, const QOpcUaLocalizedText &title, const QOpcUa::AxisScale &axisScaleType, const QList<double> &axisSteps)

Constructs axis information with engineering units engineeringUnits, range eURange, title title, scaling axisScaleType and axis steps axisSteps.

### QOpcUaAxisInformation::QOpcUaAxisInformation(const QOpcUaAxisInformation &rhs)

Constructs axis information from rhs.

### QOpcUaAxisInformation &QOpcUaAxisInformation::operator=(const QOpcUaAxisInformation &rhs)

Sets the values from rhs in this axis information.

### QOpcUa::AxisScale QOpcUaAxisInformation::axisScaleType() const

Returns the scaling of this axis, defined by QOpcUa::AxisScale.

See also setAxisScaleType().

### QList<double> QOpcUaAxisInformation::axisSteps() const

Returns specific values for each axis step.

This value is empty if the points are equally distributed and the step size can be calculated from the number of steps and the range. If the steps are different for each point but constant over a longer time, there is an entry for each data point.

See also setAxisSteps().

### QList<double> &QOpcUaAxisInformation::axisStepsRef()

Returns a reference to the axis steps.

### QOpcUaRange QOpcUaAxisInformation::eURange() const

Returns the lower and upper values of this axis.

See also setEURange().

### QOpcUaEUInformation QOpcUaAxisInformation::engineeringUnits() const

Returns the engineering units of this axis.

See also setEngineeringUnits().

### void QOpcUaAxisInformation::setAxisScaleType(QOpcUa::AxisScale axisScaleType)

Sets the axis scale type to axisScaleType.

See also axisScaleType().

### void QOpcUaAxisInformation::setAxisSteps(const QList<double> &axisSteps)

Sets the axis steps to axisSteps.

See also axisSteps().

### void QOpcUaAxisInformation::setEURange(const QOpcUaRange &eURange)

Sets the lower and upper values of this axis to eURange.

See also eURange().

### void QOpcUaAxisInformation::setEngineeringUnits(const QOpcUaEUInformation &engineeringUnits)

Sets the engineering units to engineeringUnits.

See also engineeringUnits().

### void QOpcUaAxisInformation::setTitle(const QOpcUaLocalizedText &title)

Sets the title to title.

See also title().

### QOpcUaLocalizedText QOpcUaAxisInformation::title() const

Returns the title of this axis.

See also setTitle().

### QVariant QOpcUaAxisInformation::operator QVariant() const

Converts this axis information to QVariant.

### bool QOpcUaAxisInformation::operator==(const QOpcUaAxisInformation &rhs) const

Returns `true` if this axis information has the same value as rhs.