PySide6 加载matplotlib

Question

PySide6 加载matplotlib，我计划用PySide6中的graphicsView控件绘图，但图是用matplotlib绘制的，matplotlib绘制的图在graphicsView控件中显示。求一个完整的，可运行，有备注的代码。

Answer 1

这是一个使用 PySide6 和 Matplotlib 绘制图形的例子。它使用 Matplotlib 的 FigureCanvas 类将图形绘制到 QWidget 中，然后使用 QGraphicsView 将图形显示出来。

需要先安装 PySide6 和 Matplotlib：

pip install pyside6 matplotlib

import sys
import random

from PySide6.QtWidgets import QApplication, QMainWindow, QPushButton
from PySide6.QtCore import Qt
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas

class MatplotlibWidget(QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)

        # Create a Matplotlib figure and a FigureCanvas to display it
        self.figure = Figure()
        self.canvas = FigureCanvas(self.figure)

        # Create a QGraphicsView to display the FigureCanvas
        self.view = QGraphicsView(self)
        self.view.setRenderHint(QGraphicsView.Antialiasing)
        self.view.setRenderHint(QGraphicsView.SmoothPixmapTransform)
        self.view.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.view.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.view.setResizeAnchor(QGraphicsView.AnchorViewCenter)
        self.view.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
        self.view.setOptimizationFlag(QGraphicsView.DontAdjustForAntialiasing, True)
        self.view.setOptimizationFlag(QGraphicsView.DontSavePainterState, True)

        # Create a QGraphicsScene to hold the FigureCanvas
        self.scene = QGraphicsScene(self)
        self.scene.addWidget(self.canvas)
        self.view.setScene(self.scene)

        # Lay out the widget
        layout = QVBoxLayout(self)
        layout.addWidget(self.view)
        self.setLayout(layout)

    def plot(self):
        # Generate some random data
        data = [random.random() for _ in range(10)]

        # Clear the figure and redraw the plot
        self.figure.clear()
        ax = self.figure.add_subplot(111)
        ax.plot(data, "r-")
        self.canvas.draw()

if __name__ == "__main__":
    app = QApplication(sys.argv)

    window = QMainWindow()

    # Create a MatplotlibWidget and add it to the window
    plot_widget = MatplotlibWidget()
    window.setCentralWidget(plot_widget)

    # Create a button to redraw the plot
    button = QPushButton("Redraw")
    button.clicked.connect(plot_widget.plot)
    window.addToolBar(button)

    window.show()

    app.exec_()

仅供参考，望采纳，谢谢。