Maintain the subplot size when colorbar is shown

It is important to add colorbar to your figures to show the duynamic range of the image colormap.

import numpy as np
import matplotlib.pyplot as plt

fig, axes = plt.subplots(1, 3,figsize=(12,4))
vmin = -2
vmax = 2

for ax in axes:
    im=np.random.normal(size=[100,100])
    a=ax.imshow(im, vmin=vmin, vmax=vmax, cmap='Blues')

cbar = fig.colorbar(a, ax=axes[-1], ticks=np.linspace(vmin,vmax,5))

Unknown

This issue is fixed when you use the inset_locator

import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import inset_locator

fig, axes = plt.subplots(1, 3,figsize=(12,4))
vmin = -2
vmax = 2

for ax in axes:
    im=np.random.normal(size=[100,100])
    a=ax.imshow(im, vmin=vmin, vmax=vmax, cmap='Blues')

axins = inset_locator.inset_axes(
    axes[-1],
    width="7.5%",   # width: 7.5% of parent_bbox width
    height="100%",  # height: 100%
    loc="lower left",
    bbox_to_anchor=(1.05, 0., 1, 1),
    bbox_transform=axes[-1].transAxes,
    borderpad=0,
)
cbar = fig.colorbar(a, cax=axins, ticks=np.linspace(vmin,vmax,5))
cbar.ax.tick_params(labelsize=8)

Unknown-1