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PyQt5 Matplotlib

Matplotlib plots can be included in a PyQt5 application. Several imports need to be added:

from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure
import matplotlib.pyplot as plt

We create a widget called PlotCanvas that includes the Matplotlib plot.

pyqt5-matplotlib Matplot plot in PyQt5 window

PyQt5 Matplotlib example The example below embeds a matplotlib plot in a PyQt5 window.

import sys

from PyQt5.QtWidgets import QApplication, QMainWindow, QMenu, QVBoxLayout, QSizePolicy, QMessageBox, QWidget, QPushButton from PyQt5.QtGui import QIcon

from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas from matplotlib.figure import Figure import matplotlib.pyplot as plt

import random

class App(QMainWindow):

def __init__(self): super().__init__() self.left = 10 self.top = 10 self.title = 'PyQt5 matplotlib example - pythonspot.com' self.width = 640 self.height = 400 self.initUI()

def initUI(self): self.setWindowTitle(self.title) self.setGeometry(self.left, self.top, self.width, self.height)

m = PlotCanvas(self, width=5, height=4) m.move(0,0)

button = QPushButton('PyQt5 button', self) button.setToolTip('This s an example button') button.move(500,0) button.resize(140,100)

self.show()

class PlotCanvas(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): data = [random.random() for i in range(25)] ax = self.figure.add_subplot(111) ax.plot(data, 'r-') ax.set_title('PyQt Matplotlib Example') self.draw()

if __name__ == '__main__': app = QApplication(sys.argv) ex = App() sys.exit(app.exec_())

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