How do you change the size of figures drawn with matplotlib?

Question

Can someone tell me any methods change the size of figures drawn with matploatlib?

Answer 1

It's a very simple task to perform, just use figure and it will tell you the call signature:

from matplotlib.pyplot import figure
figure(num=None, figsize=(3, 4), dpi=80, facecolor='k', edgecolor='w')

(1,1,) in figsize will create a inch-by-inch plot and it'll be of 80-by-80 (defined in dpi) pixels. 

Answer 2

You can use the below-mentioned code if you want to change the figure that is drawn with Matplotlib:

fig = matplotlib.pyplot.gcf()

fig.set_size_inches(18.5, 10.5)

fig.savefig('test2png.png', dpi=100)

Now if you need to propagate the size change to an already existing GUI window, then add 'forward=True'

fig.set_size_inches(18.5, 10.5, forward=True)

You can use the following video tutorials to clear all your doubts:-

Answer 3

If you are working with plt.plot(), you can simply use the set a tuple with your respective width and height like:

import matplotlib.pyplot as plt

plt.rcParams["figure.figsize"] = (20,3)

The above code is very beneficial when you plot inline means with IPython Notebook. 

For more information regarding the same, do refer to the Python tutorial that will help you out in a better way.