Charts (Wt::Chart)

A charting library implemented using the Wt Painting system. More...

Classes
class	Wt::Chart::WAbstractChart
	Abstract base class for MVC-based charts. More...
class	Wt::Chart::WAbstractChartModel
	An abstract model for use with Wt's charts. More...
class	Wt::Chart::WAbstractColorMap
	Maps numerical values to colors. More...
class	Wt::Chart::WAbstractDataSeries3D
	Abstract base class for dataseries that can be drawn on a WCartesian3DChart. More...
class	Wt::Chart::WAbstractGridData
	Class representing grid-based data for on a 3D chart. More...
class	Wt::Chart::WAxis
	Class which represents an axis of a cartesian chart. More...
class	Wt::Chart::WAxisSliderWidget
	A widget for selecting an X axis range to display on an associated WCartesianChart. More...
class	Wt::Chart::WCartesian3DChart
	A 3D Cartesian chart. More...
class	Wt::Chart::SeriesIterator
	Abstract base class for iterating over series data in a chart. More...
class	Wt::Chart::WCartesianChart
	A cartesian chart. More...
class	Wt::Chart::WChartPalette
	Abstract base class for styling rendered data series in charts. More...
class	Wt::Chart::WDataSeries
	A single data series in a cartesian chart. More...
class	Wt::Chart::WEquidistantGridData
	Class representing grid-based data for on a 3D chart. More...
class	Wt::Chart::WGridData
	Class representing grid-based data for a 3D chart. More...
class	Wt::Chart::WPieChart
	A pie chart. More...
class	Wt::Chart::WScatterData
	Class representing a collection of points for on a 3D chart. More...
class	Wt::Chart::WSelection
	Represents a selection on a chart. More...
class	Wt::Chart::WStandardChartProxyModel
	A WAbstractChartModel implementation that wraps a WAbstractItemModel. More...
class	Wt::Chart::WStandardPalette
	Standard styling for rendering series in charts. More...

Typedefs
typedef std::map< WFlags< KeyboardModifier >, InteractiveAction >	Wt::Chart::WheelActions
	A map of mouse wheel actions for interactive charts, indexed by WFlags<KeyboardModifier>

Enumerations
enum class	Wt::Chart::Series3DType { Wt::Chart::Series3DType::Point , Wt::Chart::Series3DType::Surface , Wt::Chart::Series3DType::Bar }
	Enumeration with the possible representations of a WAbstractGridData. More...
enum class	Wt::Chart::Axis {   Wt::Chart::Axis::X = 0 , Wt::Chart::Axis::Y = 1 , Wt::Chart::Axis::Y1 = Y , Wt::Chart::Axis::Y2 = 2 ,   Wt::Chart::Axis::Ordinate = Y , Wt::Chart::Axis::X3D = 0 , Wt::Chart::Axis::Y3D = 3 , Wt::Chart::Axis::Z3D = 1 }
	Enumeration that indicates a chart axis. More...
enum class	Wt::Chart::AxisValue { Wt::Chart::AxisValue::Minimum = 0x1 , Wt::Chart::AxisValue::Maximum = 0x2 , Wt::Chart::AxisValue::Zero = 0x4 , Wt::Chart::AxisValue::Both = 0x8 }
	Enumeration that indicates a logical location for an axis. More...
enum class	Wt::Chart::AxisScale {   Wt::Chart::AxisScale::Discrete = 0 , Wt::Chart::AxisScale::Linear = 1 , Wt::Chart::AxisScale::Log = 2 , Wt::Chart::AxisScale::Date = 3 ,   Wt::Chart::AxisScale::DateTime = 4 }
	Enumeration that indicates a scale for an axis. More...
enum class	Wt::Chart::InteractiveAction {   Wt::Chart::InteractiveAction::ZoomX , Wt::Chart::InteractiveAction::ZoomY , Wt::Chart::InteractiveAction::ZoomXY , Wt::Chart::InteractiveAction::ZoomMatching ,   Wt::Chart::InteractiveAction::PanX , Wt::Chart::InteractiveAction::PanY , Wt::Chart::InteractiveAction::PanMatching }
	Enumeration of mouse wheel actions for interactive charts. More...
enum class	Wt::Chart::SeriesType { Wt::Chart::SeriesType::Point , Wt::Chart::SeriesType::Line , Wt::Chart::SeriesType::Curve , Wt::Chart::SeriesType::Bar }
	Enumeration that specifies the type of a chart series. More...
enum class	Wt::Chart::MarkerType {   Wt::Chart::MarkerType::None , Wt::Chart::MarkerType::Square , Wt::Chart::MarkerType::Circle , Wt::Chart::MarkerType::Cross ,   Wt::Chart::MarkerType::XCross , Wt::Chart::MarkerType::Triangle , Wt::Chart::MarkerType::Custom , Wt::Chart::MarkerType::Star ,   Wt::Chart::MarkerType::InvertedTriangle , Wt::Chart::MarkerType::Asterisk , Wt::Chart::MarkerType::Diamond }
	Enumeration that specifies a type of point marker. More...
enum class	Wt::Chart::FillRangeType { Wt::Chart::FillRangeType::None , Wt::Chart::FillRangeType::MinimumValue , Wt::Chart::FillRangeType::MaximumValue , Wt::Chart::FillRangeType::ZeroValue }
	Enumeration that specifies how an area should be filled. More...
enum class	Wt::Chart::ChartType { Wt::Chart::ChartType::Category , Wt::Chart::ChartType::Scatter }
	Enumeration type that indicates a chart type for a cartesian chart. More...
enum class	Wt::Chart::AxisProperty
	Enumeration that specifies a property of the axes.
enum class	Wt::Chart::LegendLocation { Wt::Chart::LegendLocation::Inside , Wt::Chart::LegendLocation::Outside }
	Enumeration type that indicates a legend location. More...
enum class	Wt::Chart::LabelOption {   Wt::Chart::LabelOption::None = 0x00 , Wt::Chart::LabelOption::Inside = 0x01 , Wt::Chart::LabelOption::Outside = 0x02 , Wt::Chart::LabelOption::TextLabel = 0x10 ,   Wt::Chart::LabelOption::TextPercentage = 0x20 }
	Enumeration that specifies options for the labels. More...

Detailed Description

A charting library implemented using the Wt Painting system.

The charting library contains two main chart widget classes, WCartesianChart and WPieChart, and a number of utility classes for drawing simple to complex charts.

Typedef Documentation

WheelActions

typedef std::map<WFlags<KeyboardModifier>, InteractiveAction> Wt::Chart::WheelActions

A map of mouse wheel actions for interactive charts, indexed by WFlags<KeyboardModifier>

See also

WCartesianChart::setWheelActions(WheelActions)

WCartesianChart::wheelActions()

Enumeration Type Documentation

Axis

enum class Wt::Chart::Axis

strong

Enumeration that indicates a chart axis.

See also

WCartesianChart::axis(Axis)

Enumerator
X	X axis.
Y	First Y axis (== Y1).
Y1	First Y axis (== Y).
Y2	Second Y Axis.
Ordinate	Ordinate axis (== Y1 for a 2D plot).
X3D	X axis on 3D chart.
Y3D	Y axis on 3D chart.
Z3D	Z axis on 3D chart.

AxisScale

enum class Wt::Chart::AxisScale

strong

Enumeration that indicates a scale for an axis.

The scale determines how values are mapped onto an axis.

See also

WAxis::setScale(AxisScale scale)

Enumerator
Discrete	A discrete scale is set as the scale for the X axis in a ChartType::Category, and is only applicable there. It lists all values, evenly spaced, and consecutively in the order of the model. The categories are converted to numbers using their ordinal (first category = 0, second = 1, ...).
Linear	A linear scale is the default scale for all axes, except for the X scale in a AxisScale::Discrete. It maps values in a linear fashion on the axis.
Log	A logarithmic scale is useful for plotting values with of a large range, but only works for positive values.
Date	A date scale is a special linear scale, which is useful for the X axis in a ChartType::Scatter, when the X series contain dates (of type WDate). The dates are converted to numbers, as Julian Days.
DateTime	A datetime scale is a special linear scale, which is useful for the X axis in a ChartType::Scatter, when the X series contain timedates (of type WDateTime). The dates are converted to numbers, as the number of seconds since the Unix Epoch (midnight Coordinated Universal Time (UTC) of January 1, 1970).

AxisValue

enum class Wt::Chart::AxisValue

strong

Enumeration that indicates a logical location for an axis.

The location is dependent on the values of the other axis.

See also

WAxis::setLocation(AxisValue)

Enumerator
Minimum	The minimum value.
Maximum	The maximum value.
Zero	The zero value (if displayed).
Both	At both sides (Minimum and Maximum).

ChartType

enum class Wt::Chart::ChartType

strong

Enumeration type that indicates a chart type for a cartesian chart.

Enumerator
Category	The X series are categories.
Scatter	The X series must be interpreted as numerical data.

FillRangeType

enum class Wt::Chart::FillRangeType

strong

Enumeration that specifies how an area should be filled.

Data series of type SeriesType::Line or CurveSerie may be filled under or above the line or curve. This enumeration specifies the other limit of this fill. Data series of type SeriesType::Bar can use this setting to configure the bottom of the chart.

See also

WDataSeries::setFillRange(FillRangeType range)

WCartesianChart

Enumerator
None	Do not fill under the curve.
MinimumValue	Fill from the curve to the chart bottom (min)
MaximumValue	Fill from the curve to the chart top.
ZeroValue	Fill from the curve to the zero Y value.

InteractiveAction

enum class Wt::Chart::InteractiveAction

strong

Enumeration of mouse wheel actions for interactive charts.

See also

WCartesianChart::WheelActions

WCartesianChart::setWheelActions(WheelActions)

Enumerator
ZoomX	Zoom x-axis.
ZoomY	Zoom y-axis.
ZoomXY	Zoom along both x and y-axes.
ZoomMatching	Zoom y-axis on vertical scroll, x-axis on horizontal scroll.
PanX	Pan x-axis.
PanY	Pan y-axis.
PanMatching	Pan y-axis on vertical scroll, x-axis on horizontal scroll.

LabelOption

enum class Wt::Chart::LabelOption

strong

Enumeration that specifies options for the labels.

See also

WPieChart::setDisplayLabels(WFlags<LabelOption>)

Enumerator
None	Do not display labels (default).
Inside	Display labels inside each segment.
Outside	Display labels outside each segment.
TextLabel	Display the label text.
TextPercentage	Display the value (as percentage)

LegendLocation

enum class Wt::Chart::LegendLocation

strong

Enumeration type that indicates a legend location.

Enumerator
Inside	Inside the chart area.
Outside	Outside the chart area (in the padding area)

MarkerType

enum class Wt::Chart::MarkerType

strong

Enumeration that specifies a type of point marker.

See also

WDataSeries::setMarker(MarkerType marker)

WCartesianChart

Enumerator
None	Do not draw point markers.
Square	Mark points using a square.
Circle	Mark points using a circle.
Cross	Mark points using a cross (+).
XCross	Mark points using a cross (x).
Triangle	Mark points using a triangle.
Custom	Mark points using a custom marker.
Star	Mark points using a star.
InvertedTriangle	Mark points using an inverted (upside-down) triangle.
Asterisk	Mark points using an asterisk (*).
Diamond	Mark points using a diamond.

Series3DType

enum class Wt::Chart::Series3DType

strong

Enumeration with the possible representations of a WAbstractGridData.

Enumerator
Point	Series rendered as points.
Surface	Series rendered as a surface.
Bar	Series rendered as bars.

SeriesType

enum class Wt::Chart::SeriesType

strong

Enumeration that specifies the type of a chart series.

See also

WDataSeries::setType(SeriesType)

WCartesianChart

Enumerator
Point	Series rendered solely as point markers.
Line	Series rendered as points connected by straight lines.
Curve	Series rendered as points connected by curves.
Bar	Series rendered as bars.