内容

• 特性
• 公共函数
• 信号
• 静态公共成员
• 详细描述

QScatter3DSeries Class

The QScatter3DSeries class represents a data series in a 3D scatter graph. 更多...

头：	#include <QScatter3DSeries>
Since:	QtDataVisualization 1.0
实例化：	Scatter3DSeries
继承：	QAbstract3DSeries

• 所有成员列表，包括继承成员

特性

• dataProxy : QScatterDataProxy*
• itemSize : float
• selectedItem : int

公共函数

	QScatter3DSeries (QScatterDataProxy * dataProxy , QObject * parent = nullptr)
	QScatter3DSeries (QObject * parent = nullptr)
virtual	~QScatter3DSeries ()
QScatterDataProxy *	dataProxy () const
float	itemSize () const
int	selectedItem () const
void	setDataProxy (QScatterDataProxy * proxy )
void	setItemSize (float size )
void	setSelectedItem (int index )

信号

void	dataProxyChanged (QScatterDataProxy * proxy )
void	itemSizeChanged (float size )
void	selectedItemChanged (int index )

静态公共成员

int	invalidSelectionIndex ()

详细描述

This class manages the series specific visual elements, as well as the series data (via a data proxy).

If no data proxy is set explicitly for the series, the series creates a default proxy. Setting another proxy will destroy the existing proxy and all data added to it.

QScatter3DSeries supports the following format tags for QAbstract3DSeries::setItemLabelFormat ():

@xTitle	Title from x-axis
@yTitle	Title from y-axis
@zTitle	Title from z-axis
@xLabel	Item value formatted using the format of the x-axis. For more information, see QValue3DAxis::setLabelFormat ().
@yLabel	Item value formatted using the format of the y-axis. For more information, see QValue3DAxis::setLabelFormat ().
@zLabel	Item value formatted using the format of the z-axis. For more information, see QValue3DAxis::setLabelFormat ().
@seriesName	Name of the series

例如：

proxy->setItemLabelFormat(QStringLiteral("@valueTitle for (@rowLabel, @colLabel): %.1f"));
					

另请参阅 Qt Data Visualization 数据处理 .

特性文档编制

dataProxy : QScatterDataProxy *

This property holds the active data proxy.

访问函数：

QScatterDataProxy *	dataProxy () const
void	setDataProxy (QScatterDataProxy * proxy )

通知程序信号：

void	dataProxyChanged (QScatterDataProxy * proxy )

itemSize : float

Item size for the series.

The size must be between 0.0f and 1.0f . Setting the size to 0.0f causes the item size to be automatically scaled based on the total number of items in all the series for the graph.

The preset default is 0.0f .

访问函数：

float	itemSize () const
void	setItemSize (float size )

通知程序信号：

void	itemSizeChanged (float size )

selectedItem : int

This property holds the item that is selected in the series.

访问函数：

int	selectedItem () const
void	setSelectedItem (int index )

通知程序信号：

void	selectedItemChanged (int index )

成员函数文档编制

QScatter3DSeries:: QScatter3DSeries ( QScatterDataProxy * dataProxy , QObject * parent = nullptr)

Constructs a scatter 3D series with the data proxy dataProxy and the parent parent .

QScatter3DSeries:: QScatter3DSeries ( QObject * parent = nullptr)

Constructs a scatter 3D series with the parent parent .

[虚拟] QScatter3DSeries:: ~QScatter3DSeries ()

Deletes the scatter 3D series.

[static] int QScatter3DSeries:: invalidSelectionIndex ()

Returns an invalid index for selection. This index is set to the selectedItem property to clear the selection from this series.

另请参阅 QAbstract3DGraph::clearSelection ().

void QScatter3DSeries:: setDataProxy ( QScatterDataProxy * proxy )

Sets the active data proxy for the series to proxy . The series assumes ownership of any proxy set to it and deletes any previously set proxy when a new one is added. The proxy argument cannot be null or set to another series.

注意： setter 函数对于特性 dataProxy .

另请参阅 dataProxy ().

void QScatter3DSeries:: setSelectedItem ( int index )

Selects the item at the index index in the data array of the series. Only one item can be selected at a time.

To clear selection from this series, invalidSelectionIndex () is set as index . If this series is added to a graph, the graph can adjust the selection according to user interaction or if it becomes invalid. Selecting an item on another added series will also clear the selection.

Removing items from or inserting items to the series before the selected item will adjust the selection so that the same item will stay selected.

注意： setter 函数对于特性 selectedItem .

另请参阅 selectedItem () 和 QAbstract3DGraph::clearSelection ().