气轻PyQt5 34 数据可视化(QChart, QSplineSeries)

 

QChart和 QChartView是数据可视化的控件，结合QSplineSeries制作了一条曲线。

注：数据来源:国家统计局

 

from PyQt5.QtGui import *

from PyQt5.QtCore import *

from PyQt5.QtWidgets import *

from PyQt5.QtChart import QSplineSeries, QLineSeries, QChart, QChartView, QValueAxis, QBarCategoryAxis

import sys

 

class PyQt534(QMainWindow):

    def __init__(self):

        super().__init__()

        self.initUI()

 

    def initUI(self):

        self.setWindowTitle("chart")

        self.resize(600, 400)                           # 设置窗口大小

 

        gdpData  = [30319.98, 18809.64, 32679.87, 12820.4, 13509.15,

                    12001.52, 22859.35, 24221.98, 20363.19, 15342.77]

 

        chart = QChart()                                # 图表组件

 

        spline = QSplineSeries()                        # 样条曲线

        for i, value in enumerate(gdpData):

            spline.append(i, value)

 

 

        spline.setName("2018年部分城市GDP")

        spline.setColor(Qt.blue)

               

        chart.addSeries(spline)                         # 添加Series

 

        chartView = QChartView()                        # 视图组件

        chartView.setChart(chart)                       # 显示chart

       

        self.setCentralWidget(chartView)

 

        self.show()

 

if __name__ == '__main__':

    app = QApplication(sys.argv)

    window = PyQt534()

    sys.exit(app.exec_())

 

执行结果