在PyQt6中使用matplotlib库于QGraphicsView部件中画图演示代码

可以，以下是一个简单的示例代码：

import sys
from PyQt6.QtWidgets import *
from PyQt6.QtCore import *
from PyQt6.QtGui import *
from matplotlib.backends.backend_qt6agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Matplotlib in PyQt6")
        self.setGeometry(100, 100, 800, 600)

        # Create a QGraphicsView widget
        self.view = QGraphicsView(self)
        self.view.setGeometry(0, 0, 800, 600)
        self.view.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.view.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)

        # Create a QGraphicsScene and set it to the QGraphicsView
        self.scene = QGraphicsScene(self)
        self.view.setScene(self.scene)

        # Create a Matplotlib figure and add a subplot
        self.fig = Figure()
        self.ax = self.fig.add_subplot(111)

        # Create a Matplotlib canvas and add it to the QGraphicsScene
        self.canvas = FigureCanvas(self.fig)
        self.scene.addWidget(self.canvas)

        # Plot a sine wave
        import numpy as np
        x = np.linspace(0, 10, 100)
        y = np.sin(x)
        self.ax.plot(x, y)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    main_window = MainWindow()
    main_window.show()
    sys.exit(app.exec())

运行这个代码，你会看到一个 Pyqt6 窗口中嵌入了一个 Matplotlib 图形。