XYSeries QML Type

A parent type for all x & y series types. More...

Import Statement: import QtGraphs
In C++: QXYSeries
Inherits:

AbstractSeries

Inherited By:

LineSeries and ScatterSeries

Properties

Signals

Methods

Detailed Description

In XYSeries, data points are defined as a list of point types, defining X and Y positions.

Property Documentation

color : color

The main color of the series. For LineSeries this means the line color and for ScatterSeries the color of the point


count : int [read-only]

Returns the number of data points in a series.


pointDelegate : Component

A custom QML Component used as a marker for data points.

The dynamic properties available for this component are:

TypeNameDescription
boolpointSelectedThis value is true when the point is selected.
ColorpointColorThe color of the series. This value comes either from the GraphsTheme or from XYSeries::color if the XYSeries overrides the color.
ColorpointBorderColorThe border color of the series. This value comes from the GraphsTheme.
ColorpointSelectedColorThe selected color of the series. This value comes either from the GraphsTheme or from XYSeries::selectedColor if the XYSeries overrides the color.
realpointBorderWidthThe border width of the series. This value comes from the GraphsTheme.
realpointValueXThe value of the XYPoint::x at this position.
realpointValueYThe value of the XYPoint::y at this position.

To use any of these, add property with the defined name into your custom component. For example "property color pointColor" and "property real pointValueX".


selectedColor : color

The main color of the selected series. For LineSeries this means the line color and for ScatterSeries the color of the point


selectedPoints : list<int> [read-only]

The indexes of the points which are currently selected.


Signal Documentation

colorChanged(color color)

This signal is emitted when the line color changes to color.

Note: The corresponding handler is onColorChanged.


draggableChanged()

This signal is emitted when a series becomes draggable by a mouse/touch or becomes fixed.

Note: The corresponding handler is onDraggableChanged.


pointMarkerChanged()

This signal is emitted when a point is changed.

Note: The corresponding handler is onPointMarkerChanged.


pointReplaced(int index)

This signal is emitted when a point is replaced at the position specified by index.

Note: The corresponding handler is onPointReplaced.


pointsReplaced()

This signal is emitted when all points are replaced.

Note: The corresponding handler is onPointsReplaced.


selectedColorChanged(color color)

This signal is emitted when the color of selected series changes to color.

Note: The corresponding handler is onSelectedColorChanged.


selectedPointsChanged()

This signal is emitted when the set of selected points changes.

Note: The corresponding handler is onSelectedPointsChanged.


Method Documentation

append(list<point> points)

Appends points with the coordinates points to the series.


append(point point)

Appends a point with the coordinates point to the series.


append(real x, real y)

Appends a point with the coordinates x and y to the series.


point at(int index)

Returns the point at the position specified by index. Returns (0, 0) if the index is not valid.


clear()

Removes all points from the series.


deselectAllPoints()

Deselects all points in the series.

See also setPointSelected().


deselectPoint(int index)

Deselects point at given index.

See also setPointSelected().


deselectPoints(list<int> indexes)

Marks multiple points passed in a indexes list as deselected.

See also setPointSelected().


int find(point point)

Finds and returns the index of the first matching point found as defined by point. Returns -1 if the point is not found.


insert(int index, point point)

Inserts a point with the coordinates point to the position specified by index in the series. If the index is 0 or less than 0, the point is prepended to the list of points. If the index is equal to or greater than than the number of points in the series, the point is appended to the list of points.


bool isPointSelected(int index)

Returns true if point at given index is among selected points and false otherwise.

Note: Selected points are drawn using the selected color if it was specified.

See also selectedPoints, setPointSelected(), and selectedColor.


remove(int index)

Removes the point at the position specified by index from the series.


remove(point point)

Removes the point with the coordinates point from the series. Does nothing if the point does not exist.


remove(real x, real y)

Removes the point with the coordinates x and y from the series. Does nothing if the point does not exist.


removeMultiple(int index, int count)

Removes the number of points specified by count from the series starting at the position specified by index.


replace(list<point> points)

Replaces the current points with the points specified by points

Note: This is much faster than replacing data points one by one, or first clearing all data, and then appending the new data. Emits pointsReplaced when the points have been replaced.


replace(int index, point newPoint)

Replaces the point at the position specified by index with the point that has the coordinates newPoint.


replace(point oldPoint, point newPoint)

Replaces the point with the coordinates oldPoint with the point with the coordinates newPoint. Does nothing if the old point does not exist.


replace(int index, real newX, real newY)

Replaces the point at the position specified by index with the point that has the coordinates newX and newY.


replace(real oldX, real oldY, real newX, real newY)

Replaces the point with the coordinates oldX and oldY with the point with the coordinates newX and newY. Does nothing if the old point does not exist.


selectAllPoints()

Marks all points in the series as selected,

See also setPointSelected().


selectPoint(int index)

Marks point at index as selected.

See also setPointSelected().


selectPoints(list<int> indexes)

Marks multiple points passed in a indexes list as selected.

See also setPointSelected().


setPointSelected(int index, bool selected)

Marks point at given index as either selected or deselected as specified by selected.

Note: Selected points are drawn using the selected color if it was specified. Emits QXYSeries::selectedPointsChanged

See also isPointSelected(), selectAllPoints(), and selectedColor.


bool take(point point)

Takes a point, specified by point, out of the series if found. Returns true if the operation is successful.


toggleSelection(list<int> indexes)

Changes selection state of points at given indexes to the opposite one.

See also setPointSelected().


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