In this article we will see how we can set minimum size of the 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 and the Control Panel. By default plot window can be resized, by setting minimum size we assure that user will not be able to resize the window below the minimum size point. We can create a plot window with the help of command given below
# creating a pyqtgraph plot window window = pg.plot()
In order to do this we use setMinimumSize method with the plot window object Syntax : window.setMinimumSize(width, height) Argument : It takes two integer as argument Return : It returns None
Below is the implementation
Python3
# importing pyqtgraph as pgimport pyqtgraph as pg# importing QtCore and QtGui from the pyqtgraph modulefrom pyqtgraph.Qt import QtCore, QtGui# importing numpy as npimport numpy as npimport time# creating a pyqtgraph plot windowwindow = pg.plot()# setting window geometry# left = 100, top = 100# width = 600, height = 500window.setGeometry(100, 100, 600, 500)# title for the plot windowtitle = "Lazyroar PyQtGraph"# setting window title to plot windowwindow.setWindowTitle(title)# create list for y-axisy1 = [5, 5, 7, 10, 3, 8, 9, 1, 6, 2]# create horizontal list i.e x-axisx = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]# create pyqt5graph bar graph item # with width = 0.6# with bar colors = greenbargraph1 = pg.BarGraphItem(x = x, height = y1, width = 0.6, brush ='g')# add item to plot window# adding bargraph item to the windowwindow.addItem(bargraph1)# setting minimum size of plot windowwindow.setMinimumSize(200, 300)# main methodif __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_() |
Output : Below is the minimum size which can window can attain 
