AbstractBarSeries QML Type

ChartView {
    title: "Bar series"
    anchors.fill: parent
    legend.alignment: Qt.AlignBottom
    antialiasing: true
    BarSeries {
        id: mySeries
        axisX: BarCategoryAxis { categories: ["2007", "2008", "2009", "2010", "2011", "2012" ] }
        BarSet { label: "Bob"; values: [2, 2, 3, 4, 5, 6] }
        BarSet { label: "Susan"; values: [5, 1, 2, 4, 1, 7] }
        BarSet { label: "James"; values: [3, 5, 8, 13, 5, 8] }
    }
}
					

特性文档编制

The x-axis used for the series. If you leave both axisX and axisXTop undefined, a BarCategoryAxis is created for the series.

另请参阅 axisXTop .

The x-axis used for the series, drawn on top of the chart view.

注意： You can only provide either axisX or axisXTop, but not both.

另请参阅 axisX .

The y-axis used for the series. If you leave both axisY and axisYRight undefined, a ValueAxis is created for the series.

另请参阅 axisYRight .

The y-axis used for the series, drawn to the right of the chart view.

注意： You can only provide either axisY or axisYRight, but not both.

另请参阅 axisY .

宽度单位是 X 轴的单位。条形的最小宽度为 0，且负值被视为 0。将宽度设为 0 意味着屏幕中的条形宽度为 1 像素，不管 X 轴的刻度。宽于 0 的条形按 X 轴的刻度比例缩放。

注意： When used with the BarSeries type, this value specifies the width of a group of bars instead of that of a single bar.

The number of bar sets in a bar series.

The angle of the value labels in degrees.

The format used for showing labels in a bar series.

另请参阅 QAbstractBarSeries::labelsFormat , labelsVisible ，和 labelsPosition .

The position of the data value labels:

另请参阅 labelsVisible and labelsFormat .

The maximum amount of significant digits shown in value labels.

默认值为 6。

The visibility of the labels in a bar series.

信号文档编制

This signal is emitted when bar sets are added to the series.

The corresponding signal handler is onBarsetsAdded .

注意： 相应处理程序是 onBarsetsAdded .

This signal is emitted when bar sets are removed from the series.

The corresponding signal handler is onBarsetsRemoved .

注意： 相应处理程序是 onBarsetsRemoved .

This signal is emitted when the user clicks the bar specified by index in the bar set specified by barset .

The corresponding signal handler is onClicked .

注意： 相应处理程序是 onClicked .

This signal is emitted when the user double-clicks the bar specified by index in the bar set specified by barset .

The corresponding signal handler is onDoubleClicked .

注意： 相应处理程序是 onDoubleClicked .

This signal is emitted when a mouse is hovered over the bar specified by index in the bar set specified by barset . When the mouse moves over the bar, status turns true , and when the mouse moves away again, it turns false .

The corresponding signal handler is onHovered .

注意： 相应处理程序是 onHovered .

This signal is emitted when the user clicks the bar specified by index in the bar set specified by barset and holds down the mouse button.

The corresponding signal handler is onPressed .

注意： 相应处理程序是 onPressed .

This signal is emitted when the user releases the mouse press on the bar specified by index in the bar set specified by barset .

The corresponding signal handler is onReleased .

注意： 相应处理程序是 onReleased .

方法文档编制

Adds a new bar set with label and values to the index. values is a list of real values.

例如：

myBarSeries.append("set 1", [0, 0.2, 0.2, 0.5, 0.4, 1.5, 0.9]);
				

Returns the bar set at index . Returns null if the index is not valid.

Removes all bar sets from the series.

Adds a new bar set with label and values to index . values can be a list of real values or a list of XYPoint 类型。

If the index value is equal to or less than zero, the new bar set is prepended to the bar series. If the index value is equal to or greater than the number of bar sets in the bar series, the new bar set is appended to the bar series.

另请参阅 append() .

Removes the bar set specified by barset from the series. Returns true if successful, false 否则。