QBarSeries::append
时间: 2023-09-19 12:06:13 浏览: 42
(QBarSet *set)
The QBarSeries::append() function appends a bar set to the QBarSeries. The bar set is added to the end of the series.
Parameters:
- set: a pointer to the QBarSet that is to be appended to the series.
Returns: None.
Example:
```cpp
// Create a QBarSet object and add values to it
QBarSet *set = new QBarSet("Sales");
*set << 100 << 200 << 300 << 400 << 500;
// Create a QBarSeries object and append the QBarSet object to it
QBarSeries *series = new QBarSeries();
series->append(set);
```
相关问题
pyqt QBarSeries::append
QBarSeries is a class in PyQt that represents a series of bars in a bar chart. The append() method of QBarSeries allows you to add a new bar to the series.
The syntax for the append() method is as follows:
```python
append(QBarSet *set)
```
Here, the parameter set is a QBarSet object that represents the data for the new bar. You can create a QBarSet object by specifying the values for the bar using the constructor:
```python
QBarSet(QString label[, QObject *parent])
```
The label parameter is a string that represents the label for the bar. The parent parameter is optional and specifies the parent object for the QBarSet.
Here is an example of using the append() method to add a bar to a QBarSeries object:
```python
series = QtChart.QBarSeries()
set1 = QtChart.QBarSet("Bar 1")
set1.append(1)
set1.append(2)
set1.append(3)
series.append(set1)
```
This code creates a new QBarSeries object and a new QBarSet object with the label "Bar 1". The append() method is then used to add three values to the QBarSet object. Finally, the append() method is called on the QBarSeries object to add the QBarSet object as a new bar in the bar chart.
QBarSeries可以使用append函数吗
可以的。QBarSeries是Qt Charts中的一个类,用于绘制柱状图。它提供了append函数,可以向柱状图中添加数据。示例代码如下:
```
QBarSeries *series = new QBarSeries();
QBarSet *set = new QBarSet("Series 1");
*set << 1 << 2 << 3 << 4 << 5;
series->append(set);
```
在上面的示例中,首先创建了一个QBarSeries对象,然后创建了一个QBarSet对象并添加了数据,最后使用append函数将QBarSet添加到QBarSeries中。这样就可以向柱状图添加数据了。