Plotting Realtime Data using Matplotlib in PyQt6

 This demo program shows how to plot realtime data, specifiy the location on a window among other things.

The Output:

The Code:

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import sys import numpy as np from matplotlib.backends.qt_compat import QtCore, QtGui, QtWidgets from matplotlib.backends.backend_qt5agg import FigureCanvas from matplotlib.figure import Figure def onclick(event): global clicks clicks.append(event.xdata) class ApplicationWindow(QtWidgets.QMainWindow): def __init__(self): super(ApplicationWindow, self).__init__() dynamic_canvas = FigureCanvas(Figure(figsize=(5, 3), dpi=115)) dynamic_canvas.setParent(self) dynamic_canvas.move(25,25) self._dynamic_ax = dynamic_canvas.figure.subplots() dynamic_canvas.figure.canvas.mpl_connect('button_press_event', onclick) self._dynamic_ax.grid() self._timer = dynamic_canvas.new_timer( 100, [(self._update_window, (), {})]) self._timer.start() button_stop = QtWidgets.QPushButton('Stop', self) button_stop.setGeometry(625, 95, 100, 40) button_stop.clicked.connect(self._timer.stop) button_start = QtWidgets.QPushButton('Start', self) button_start.setGeometry(625, 40, 100, 40) button_start.clicked.connect(self._timer.start) self.setGeometry(25, 45, 745, 400) self.setWindowTitle('Post 8') self.show() def _update_window(self): self._dynamic_ax.clear() global x, y1, y2, y3, N, count_iter, last_number_clicks x.append(x[count_iter] + 0.01) y1.append(np.random.random()) idx_inf = max([count_iter-N, 0]) if last_number_clicks < len(clicks): for new_click in clicks[last_number_clicks:(len(clicks))]: rowPosition = self.table_clicks.rowCount() self.table_clicks.insertRow(rowPosition) self.table_clicks.setItem(rowPosition,0, QtWidgets.QTableWidgetItem(str(new_click))) self.table_clicks.setItem(rowPosition,1, QtWidgets.QTableWidgetItem("Descripcion")) last_number_clicks = len(clicks) self._dynamic_ax.plot(x[idx_inf:count_iter], y1[idx_inf:count_iter],'-o', color='b') count_iter += 1 self._dynamic_ax.figure.canvas.draw() #%% if __name__ == "__main__": pressed_key = {} clicks = [] last_number_clicks = len(clicks) N = 25 y1 = [np.random.random()] x = [0] count_iter = 0 qapp = QtWidgets.QApplication(sys.argv) app = ApplicationWindow() app.show() sys.exit(qapp.exec())