PyQt5+QtChart实现绘制区域图

series0 = QLineSeries()
series1 = QLineSeries()
area = QAreaSeries(series0, series1)

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
from PyQt5.QtChart import QAreaSeries, QLineSeries, QSplineSeries, QValueAxis, QChart, QChartView


class MyAreaWindow(QWidget):
    def __init__(self, parent=None):
        super(MyAreaWindow, self).__init__(parent)
        self.setWindowTitle("区域图")
        chart = QChart()
        chartView = QChartView()
        
        # 创建Series
        series0 = QLineSeries()
        series1 = QLineSeries()

        # 添加数据
        series0 << QPointF(1, 5) << QPointF(3, 7) << QPointF(7, 6) << QPointF(9, 7) \
        << QPointF(12, 6) << QPointF(16, 7) << QPointF(18, 5)
        series1 << QPointF(1, 3) << QPointF(3, 4) << QPointF(7, 3) << QPointF(8, 2) \
        << QPointF(12, 3) << QPointF(16, 4) << QPointF(18, 3)

        # 创建区域图
        area = QAreaSeries(series0, series1)
        area.setName("面积")

        # 设置画笔, pen用于画区域的边框
        pen = QPen(Qt.red)
        pen.setWidth(3)
        area.setPen(pen)

        # 设置画刷,brush用于填充区域
        brush = QBrush(Qt.yellow)
        area.setBrush(brush)

        # gradient = QLinearGradient(QPointF(0, 0), QPointF(0, 1))
        # gradient.setColorAt(0.0, QColor(0x3cc63c))
        # gradient.setColorAt(1.0, QColor(0x16f626))
        # gradient.setCoordinateMode(QGradient.ObjectBoundingMode)
        # area.setBrush(gradient)

        chart.addSeries(area)
        chart.createDefaultAxes()
        chart.axisX().setRange(0, 20)
        chart.axisY().setRange(0, 10)

        chartView.setChart(chart)
        chartView.setRenderHint(QPainter.Antialiasing)

        vbox = QVBoxLayout()
        vbox.addWidget(chartView)
        self.setLayout(vbox)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = MyAreaWindow()
    win.show()
    sys.exit(app.exec_())

import sys
from PyQt5.QtCore import Qt, QPointF
from PyQt5.QtGui import QPainter, QPen, QLinearGradient, QColor
from PyQt5.QtWidgets import QApplication, QMainWindow
from  PyQt5.QtChart import QChartView, QChart, QLineSeries, QAreaSeries
 
class DemoChartArea(QMainWindow):
    def __init__(self, parent=None):
        super(DemoChartArea, self).__init__(parent)   
        
         # 设置窗口标题
        self.setWindowTitle('实战 Qt for Python: QChart面积图演示')      
        # 设置窗口大小
        self.resize(480, 360)
        
        self.createChart()
        
    def createChart(self):
        
        #面积图的上下两条曲线
        #注意line0和line1的生存周期!!!!!
        self.line0 = QLineSeries()
        self.line1 = QLineSeries()
        
        self.line0 << QPointF(1, 5) << QPointF(3, 7) << QPointF(7, 6) << QPointF(9, 7) << QPointF(12, 6) << QPointF(16, 7) << QPointF(18, 5)
        self.line1 << QPointF(1, 3) << QPointF(3, 4) << QPointF(7, 3) << QPointF(8, 2) << QPointF(12, 3) << QPointF(16, 4) << QPointF(18, 3)
        
        #面积图
        areaSeries = QAreaSeries(self.line0, self.line1)
        areaSeries.setName('蝙蝠侠') #Batman
        
        pen = QPen(QColor(0x059605))
        pen.setWidth(3)
        areaSeries.setPen(pen)
        
        #渐变设置
        gradient = QLinearGradient(QPointF(0,0), QPointF(0, 1))
        gradient.setColorAt(0.0, QColor(0x3cc63c))
        gradient.setColorAt(1.0, QColor(0x26f626))
        gradient.setCoordinateMode(QLinearGradient.ObjectBoundingMode)
        areaSeries.setBrush(gradient)
              
        #创建图表
        chart = QChart()
        chart.addSeries(areaSeries)
        chart.setTitle('简单面积图示例')
        chart.createDefaultAxes()
        chart.axes(Qt.Horizontal)[0].setRange(0, 20) #横坐标数值范围
        chart.axes(Qt.Vertical)[0].setRange(0, 10) #纵坐标数值范围
         
        #图表视图
        chartView = QChartView(chart)
        chartView.setRenderHint(QPainter.Antialiasing)
        
        self.setCentralWidget(chartView)
      
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = DemoChartArea()
    window.show()
    sys.exit(app.exec())