Merge pull request #14951 from meeseeksmachine/auto-backport-of-pr-14934-on-v3.1.x

QuLogic · web-flow · commit bbd2db627267 · 2019-08-01T18:48:50.000-04:00
Backport PR #14934 on branch v3.1.x (DOC: update axes_demo to directly manipulate fig, ax)
diff --git a/examples/subplots_axes_and_figures/axes_demo.py b/examples/subplots_axes_and_figures/axes_demo.py
@@ -3,7 +3,14 @@
 Axes Demo
 =========
 
-Example use of ``plt.axes`` to create inset axes within the main plot axes.
+Example use of ``fig.add_axes`` to create inset axes within the main plot axes.
+
+Please see also the :ref:`axes_grid_examples` section, and the following three
+examples:
+
+   - :doc:`/gallery/subplots_axes_and_figures/zoom_inset_axes`
+   - :doc:`/gallery/axes_grid1/inset_locator_demo`
+   - :doc:`/gallery/axes_grid1/inset_locator_demo2`
 """
 import matplotlib.pyplot as plt
 import numpy as np
@@ -19,27 +26,27 @@
 x = np.random.randn(len(t))
 s = np.convolve(x, r)[:len(x)] * dt  # colored noise
 
-# the main axes is subplot(111) by default
-plt.plot(t, s)
-plt.xlim(0, 1)
-plt.ylim(1.1 * np.min(s), 2 * np.max(s))
-plt.xlabel('time (s)')
-plt.ylabel('current (nA)')
-plt.title('Gaussian colored noise')
+fig, main_ax = plt.subplots()
+main_ax.plot(t, s)
+main_ax.set_xlim(0, 1)
+main_ax.set_ylim(1.1 * np.min(s), 2 * np.max(s))
+main_ax.set_xlabel('time (s)')
+main_ax.set_ylabel('current (nA)')
+main_ax.set_title('Gaussian colored noise')
 
 # this is an inset axes over the main axes
-a = plt.axes([.65, .6, .2, .2], facecolor='k')
-n, bins, patches = plt.hist(s, 400, density=True)
-plt.title('Probability')
-plt.xticks([])
-plt.yticks([])
+right_inset_ax = fig.add_axes([.65, .6, .2, .2], facecolor='k')
+right_inset_ax.hist(s, 400, density=True)
+right_inset_ax.set_title('Probability')
+right_inset_ax.set_xticks([])
+right_inset_ax.set_yticks([])
 
 # this is another inset axes over the main axes
-a = plt.axes([0.2, 0.6, .2, .2], facecolor='k')
-plt.plot(t[:len(r)], r)
-plt.title('Impulse response')
-plt.xlim(0, 0.2)
-plt.xticks([])
-plt.yticks([])
+left_inset_ax = fig.add_axes([.2, .6, .2, .2], facecolor='k')
+left_inset_ax.plot(t[:len(r)], r)
+left_inset_ax.set_title('Impulse response')
+left_inset_ax.set_xlim(0, 0.2)
+left_inset_ax.set_xticks([])
+left_inset_ax.set_yticks([])
 
 plt.show()
