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"""
======================
Zoom region inset Axes
======================
Example of an inset Axes and a rectangle showing where the zoom is located.
"""
import numpy as np
from matplotlib import cbook
from matplotlib import pyplot as plt
fig, ax = plt.subplots()
# make data
Z = cbook.get_sample_data("axes_grid/bivariate_normal.npy") # 15x15 array
Z2 = np.zeros((150, 150))
ny, nx = Z.shape
Z2[30:30+ny, 30:30+nx] = Z
extent = (-3, 4, -4, 3)
ax.imshow(Z2, extent=extent, origin="lower")
# inset Axes....
x1, x2, y1, y2 = -1.5, -0.9, -2.5, -1.9 # subregion of the original image
axins = ax.inset_axes(
[0.5, 0.5, 0.47, 0.47],
xlim=(x1, x2), ylim=(y1, y2), xticklabels=[], yticklabels=[])
axins.imshow(Z2, extent=extent, origin="lower")
ax.indicate_inset_zoom(axins, edgecolor="black")
plt.show()
# %%
#
# .. admonition:: References
#
# The use of the following functions, methods, classes and modules is shown
# in this example:
#
# - `matplotlib.axes.Axes.inset_axes`
# - `matplotlib.axes.Axes.indicate_inset_zoom`
# - `matplotlib.axes.Axes.imshow`
#
# .. tags::
#
# component: axes
# plot-type: imshow
# level: intermediate
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