使用QT5 python调整MatPlotLib图表的大小

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QWidget
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure

class MatplotlibWidget(QWidget):
    def __init__(self, parent=None):
        super(MatplotlibWidget, self).__init__(parent)
        self.figure = Figure()
        self.canvas = FigureCanvas(self.figure)
        layout = QVBoxLayout()
        layout.addWidget(self.canvas)
        self.setLayout(layout)

class MainWindow(QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()
        self.setWindowTitle("Matplotlib Widget Example")
        self.setGeometry(100, 100, 800, 600)  # 设置主窗口大小

        matplotlib_widget = MatplotlibWidget(self)
        matplotlib_widget.figure.set_figwidth(6)  # 设置图表宽度
        matplotlib_widget.figure.set_figheight(4)  # 设置图表高度

        self.setCentralWidget(matplotlib_widget)

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