Qt framework (with QT Creator IDE) can be used to create a fancy interfaces for Python GUI application. Plotting graphics on a GUI is possible with pyqtgraph library.
Installing pyqtgraph –
There are several ways of installing pyqtgraph depending on your needs.
If you are using Anaconda you can install with:
conda install -c anaconda pyqtgraph
Or with pip command:
pip install pyqtgraph
Creation of plot widgets with QT Creator –
Add the buttons, text areas and other stuffs as usually done with QT Creator. To create a plot area you need to follow the steps:
- Add widget to UI and give it a proper name like “widgetSignal”
- Promote the widget to pyqtgraph
Load UI to Python –
- In your python code call the UI you created with QT Creator.
- Create a sin wave for plotting
- Draw the graph on UI
from PyQt5 import QtWidgets, uic import sys import numpy as np class MainWindow(QtWidgets.QMainWindow): def __init__(self, *args, **kwargs): super(MainWindow, self).__init__(*args, **kwargs) # Load the UI Page self. ui = uic.loadUi('mainwindow.ui', self) # Create a sin wave x_time = np.arange(0, 100, 0.1); y_amplitude = np.sin(x_time) pltSignal = self.widgetSignal pltSignal.clear() pltSignal.setLabel('left', 'Signal Sin Wave', units ='(V)') pltSignal.setLabel('bottom', 'Time', units ='(sec)') pltSignal.plot(x_time, y_amplitude, clear = True) self.ui.show() def main(): app = QtWidgets.QApplication(sys.argv) window = MainWindow() sys.exit(app.exec_()) if __name__ == '__main__': main() |
Output:
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