pyqt绘制动态折线图

根据项目需求，新数据动态显示在折线图中，之前在web写过，但不太想做web(原因内容太多，更新太快），用python3.8与 PyQt5绘制动态折线图

from PyQt5.QtChart import QChart, QChartView, QSplineSeries, QValueAxis
from PyQt5.QtWidgets import QApplication,QWidget, QVBoxLayout, QMainWindow
from PyQt5.QtCore import QPointF, Qt, QTimer
from PyQt5.QtGui import QPainter
import sys
import random

class Charts(QChart):
    def __init__(self):
        super().__init__()
        self.chart_init()
        self.i = 0
        self.time_init()

    def time_init(self):
        self.timer = QTimer(self)
        self.timer.start(500)
        self.timer.timeout.connect(self.update_series1)

    def chart_init(self):
    # 创建折线视图
        self.chart = QChart()
        self.chart.setAnimationOptions(QChart.SeriesAnimations)
        # self.chart.legend().hide()
        self.chart.setBackgroundVisible(False)
    #曲线
        self.series_1 = QSplineSeries()
        self.series_1.setName("line1")  #设置曲线名称
        self.series_2 = QSplineSeries()
        self.series_2.setName("line2")
        x2_val = [0, 1, 2, 3, 4, 5, 6, 7]
        y2_val = [0, 2, 6, 1, 7, 5, 4, 3]
        for value in range(len(x2_val)):
            self.series_2.append(x2_val[value], y2_val[value])
    #坐标轴
        self.x_Aix = QValueAxis()
        self.x_Aix.setRange(0.00, 10.00)
        self.x_Aix.setLabelFormat("%u") #%0.2f
        self.x_Aix.setTickCount(11) #10+1
        self.x_Aix.setMinorTickCount(9)
        self.x_Aix.setTitleText("T")
        self.y_Aix = QValueAxis()
        self.y_Aix.setRange(0.00, 10.00)
        self.y_Aix.setLabelFormat("%u")
        self.y_Aix.setTickCount(11)
        self.y_Aix.setMinorTickCount(1)
        self.y_Aix.setTitleText("y")

    #画坐标轴
        self.chart.addAxis(self.x_Aix, Qt.AlignBottom)
        self.chart.addAxis(self.y_Aix, Qt.AlignLeft)
    #画xian
        self.chart.addSeries(self.series_1)
        self.chart.addSeries(self.series_2)
    #把曲线关联到坐标轴
        self.series_1.attachAxis(self.x_Aix)
        self.series_1.attachAxis(self.y_Aix)
        self.series_2.attachAxis(self.x_Aix)
        self.series_2.attachAxis(self.y_Aix)
    
    #创建折线视图 窗口
        self.chartview = QChartView(self.chart)
        self.chart.setTitle("简单折线图")
        self.chartview.setRenderHint(QPainter.Antialiasing)  # 抗锯齿
        self.chartview.setGeometry(0, 0, 600, 600)
        # self.chartview.chart().addSeries(self.series_1)
        # self.chartview.chart().setAxisX(self.x_Aix)
        # self.chartview.chart().setAxisY(self.y_Aix)
        # self.chartview.chart().createDefaultAxes()
        # # self.chartview.chart().setTitleBrush(QBrush())
        # self.chartview.chart().setTitle("Title")
        # self.chartview.series_1
        self.chartview.show()

    def update_series1(self):
        data = random.randint(0, 10)
        self.i += 1
        # 当时间轴大于现有时间轴，进行更新坐标轴，并删除之前数据
        if self.i>=10 :
            self.chart.axisX().setRange(self.i-10, self.i)
        if self.series_1.count() > 10:
            self.series_1.removePoints(0, self.series_1.count() - 10)
        self.series_1.append(self.i, data)
        
            
if __name__ == "__main__":
    app = QApplication(sys.argv)
    charts = Charts()
    
    # v_box = QVBoxLayout()
    # v_box.addWidget(charts.chartview)
    # mw  = QMainWindow()
    # mw.setLayout(v_box)
    # mw.show()
    
    sys.exit(app.exec())

例如：
1、 学习的 vlog 视频 1 个