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

Question

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

Answer 1

I always use the following pattern:

x_inches = 150*(1/25.4)     # [mm]*constant
y_inches = x_inches*(0.8)
dpi = 96

fig = plt.figure(1, figsize = (x_inches,y_inches), dpi = dpi, constrained_layout = True)

With this example you are able to set figure dimensions in inches or in milimiters and setting constrained_layout to True plots fill your figure without borders.