PyQtGraph – Closing Plot Window

In this article we will see how we can close plot window in the PyQtGraph module. PyQtGraph is a graphics and user interface library for Python that provides functionality commonly required in designing and science applications. Its primary goals are to provide fast, interactive graphics for displaying data (plots, video, etc.) and second is to provide tools to aid in rapid application development (for example, property trees such as used in Qt Designer).

Plot windows consist of two main parts: the Plot Panel containing the actual plotted graphics (by default, at the top), and the Control Panel (by default, at the bottom). The Control Panel is where you configure what will be plotted. For a simple scatter plot it may just be a case of selecting what columns to plot against each other, but it can get quite detailed.

In order to do this we use close method with the plot window object

Syntax : window.close()

Argument : It takes no argument

Return : It returns None

Below is the implementation

# importing pyqtgraph as pg
import pyqtgraph as pg

# importing QtCore and QtGui from the pyqtgraph module
from pyqtgraph.Qt import QtCore, QtGui

# importing numpy as np
import numpy as np

import time

# creating a pyqtgraph plot window
window = pg.plot()

# title
title = "GeeksforGeeks PyQtGraph"

# setting window title
window.setWindowTitle(title)

# create list for y-axis
y1 = [5, 5, 7, 10, 3, 8, 9, 1, 6, 2]

# create horizontal list i.e x-axis
x = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

# create pyqt5graph bar graph item
# with bar colors = green
bargraph1 = pg.BarGraphItem(x = x, height = y1, width = 0.6, brush ='g')

# adding bargraph item to the window
window.addItem(bargraph1)

# window will get closed
window.close()


# main method
if __name__ == '__main__':

    # importing system
    import sys

    # Start Qt event loop unless running in interactive mode or using
    if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
        QtGui.QApplication.instance().exec_()

    print("window is closed")

Output :

window is closed