Different X and Y scales in zoomed inset in Matplotlib

To show different X and Y scales in zoomed inset in Matplotlib, we can use inset_axes() method.

Steps

Set the figure size and adjust the padding between and around the subplots.
Create x and y data points using numpy.
Add a subplot to the current figure.
Plot x and y data points using plot() method.
Create an inset axes with a given width and height.
Set different x and y scales.
Draw a box to mark the location of an area represented by an inset axes.
To display the figure, use show() method.

Example

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

plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True

x = np.linspace(0, 1, 100)
y = x ** 2

ax = plt.subplot(1, 1, 1)
ax.plot(x, y)

axins = inset_axes(ax, 1, 1, loc=2, bbox_to_anchor=(0.2, 0.55),
                  bbox_transform=ax.figure.transFigure)
axins.plot(x, y)

x1, x2 = .4, .6
y1, y2 = x1 ** 2, x2 ** 2

axins.set_xlim(x1, x2)
axins.set_ylim(y1, y2)

mark_inset(ax, axins, loc1=1, loc2=3, fc="none", ec="0.5")

plt.show()

Output

Rishikesh Kumar Rishi

Published on 17-Jun-2021 11:56:31

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