Merge pull request #18468 from anntzer/multiy

timhoffm · web-flow · commit e146733aa85b · 2020-09-13T17:35:57.000+02:00
Cleanup multiple_yaxis_with_spines example.
diff --git a/examples/ticks_and_spines/multiple_yaxis_with_spines.py b/examples/ticks_and_spines/multiple_yaxis_with_spines.py
@@ -12,58 +12,44 @@
 axes is shown in the :doc:`/gallery/axisartist/demo_parasite_axes` and
 :doc:`/gallery/axisartist/demo_parasite_axes2` examples.
 """
-import matplotlib.pyplot as plt
-
 
-def make_patch_spines_invisible(ax):
-    ax.set_frame_on(True)
-    ax.patch.set_visible(False)
-    for sp in ax.spines.values():
-        sp.set_visible(False)
+import matplotlib.pyplot as plt
 
 
-fig, host = plt.subplots()
+fig, ax = plt.subplots()
 fig.subplots_adjust(right=0.75)
 
-par1 = host.twinx()
-par2 = host.twinx()
+twin1 = ax.twinx()
+twin2 = ax.twinx()
 
-# Offset the right spine of par2.  The ticks and label have already been
+# Offset the right spine of twin2.  The ticks and label have already been
 # placed on the right by twinx above.
-par2.spines["right"].set_position(("axes", 1.2))
-# Having been created by twinx, par2 has its frame off, so the line of its
-# detached spine is invisible.  First, activate the frame but make the patch
-# and spines invisible.
-make_patch_spines_invisible(par2)
-# Second, show the right spine.
-par2.spines["right"].set_visible(True)
+twin2.spines["right"].set_position(("axes", 1.2))
 
-p1, = host.plot([0, 1, 2], [0, 1, 2], "b-", label="Density")
-p2, = par1.plot([0, 1, 2], [0, 3, 2], "r-", label="Temperature")
-p3, = par2.plot([0, 1, 2], [50, 30, 15], "g-", label="Velocity")
+p1, = ax.plot([0, 1, 2], [0, 1, 2], "b-", label="Density")
+p2, = twin1.plot([0, 1, 2], [0, 3, 2], "r-", label="Temperature")
+p3, = twin2.plot([0, 1, 2], [50, 30, 15], "g-", label="Velocity")
 
-host.set_xlim(0, 2)
-host.set_ylim(0, 2)
-par1.set_ylim(0, 4)
-par2.set_ylim(1, 65)
+ax.set_xlim(0, 2)
+ax.set_ylim(0, 2)
+twin1.set_ylim(0, 4)
+twin2.set_ylim(1, 65)
 
-host.set_xlabel("Distance")
-host.set_ylabel("Density")
-par1.set_ylabel("Temperature")
-par2.set_ylabel("Velocity")
+ax.set_xlabel("Distance")
+ax.set_ylabel("Density")
+twin1.set_ylabel("Temperature")
+twin2.set_ylabel("Velocity")
 
-host.yaxis.label.set_color(p1.get_color())
-par1.yaxis.label.set_color(p2.get_color())
-par2.yaxis.label.set_color(p3.get_color())
+ax.yaxis.label.set_color(p1.get_color())
+twin1.yaxis.label.set_color(p2.get_color())
+twin2.yaxis.label.set_color(p3.get_color())
 
 tkw = dict(size=4, width=1.5)
-host.tick_params(axis='y', colors=p1.get_color(), **tkw)
-par1.tick_params(axis='y', colors=p2.get_color(), **tkw)
-par2.tick_params(axis='y', colors=p3.get_color(), **tkw)
-host.tick_params(axis='x', **tkw)
-
-lines = [p1, p2, p3]
+ax.tick_params(axis='y', colors=p1.get_color(), **tkw)
+twin1.tick_params(axis='y', colors=p2.get_color(), **tkw)
+twin2.tick_params(axis='y', colors=p3.get_color(), **tkw)
+ax.tick_params(axis='x', **tkw)
 
-host.legend(lines, [l.get_label() for l in lines])
+ax.legend(handles=[p1, p2, p3])
 
 plt.show()
