Python中matplotlib做的散点图放到主程序的Uii子界面上

如果你想在你的主程序的 UI 界面上显示 matplotlib 生成的散点图，你可以使用 PyQt5 库来实现这个功能。

下面是一个简单的例子：

import sys
import random
from PyQt5.QtWidgets import QApplication, QMainWindow, QMenu, QVBoxLayout, QSizePolicy, QMessageBox, QWidget
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure
import matplotlib.pyplot as plt

class MyMplCanvas(FigureCanvas):
    def __init__(self, parent=None, width=5, height=4, dpi=100):
        fig = Figure(figsize=(width, height), dpi=dpi)
        self.axes = fig.add_subplot(111)
        FigureCanvas.__init__(self, fig)
        self.setParent(parent)
        FigureCanvas.setSizePolicy(self,
                QSizePolicy.Expanding,
                QSizePolicy.Expanding)
        FigureCanvas.updateGeometry(self)
        self.plot()

    def plot(self):
        x = [random.random() for i in range(25)]
        y = [random.random() for i in range(25)]
        self.axes.scatter(x, y)

class MyStaticMplCanvas(MyMplCanvas):
    def __init__(self, *args, **kwargs):
        MyMplCanvas.__init__(self, *args, **kwargs)

class ApplicationWindow(QMainWindow):
    def __init__(self):
        QMainWindow.__init__(self)
        self.setAttribute(Qt.WA_DeleteOnClose)
        self.setWindowTitle("application main window")
        self.main_widget = QWidget(self)
        self.layout = QVBoxLayout(self.main_widget)
        self.sc = MyStaticMplCanvas(self.main_widget, width=5, height=4, dpi=100)
        self.layout.addWidget(self.sc)
        self.main_widget.setFocus()
        self.setCentralWidget(self.main_widget)

qApp = QApplication(sys.argv)
aw = ApplicationWindow()
aw.show()
sys.exit(qApp.exec_())

这个代码中，我们创建了一个继承自 FigureCanvas 的类，这个类实现了画散点图的功能。然后，我们在 ApplicationWindow 类中实例化了这个类，