Extract spines_demo_bounds from spine_placement_demo

Author: tonysyu

examples/pylab_examples/spine_placement_demo.py

@@ -1,4 +1,3 @@
-import sys
 import matplotlib.pyplot as plt
 import numpy as np
 from matplotlib.pyplot import show
@@ -122,40 +121,4 @@ def adjust_spines(ax,spines):
 ax.plot(x,y)
 adjust_spines(ax,['bottom'])
 
-# ----------------------------------------------------
-
-fig = plt.figure()
-
-x = np.linspace(0,2*np.pi,50)
-y = np.sin(x)
-y2 = y + 0.1*np.random.normal( size=x.shape )
-
-# plot data
-ax = fig.add_subplot(1,1,1)
-line1,=ax.plot(x,y,'--')
-line2,=ax.plot(x,y2,'bo')
-
-# adjust the spines
-adjust_spines(ax,['left','bottom'])
-
-# set ticks and tick labels
-#   x
-ax.set_xlim((0,2*np.pi))
-ax.set_xticks([0,np.pi,2*np.pi])
-if sys.version_info[0] < 3:
-    pichr = unichr(0x03C0)
-else:
-    pichr = chr(0x03C0)
-ax.set_xticklabels(['0',pichr,'2 '+pichr])
-
-#   y
-ax.set_yticks([-1,0,1])
-
-# disable clipping of data points by axes range
-for artist in (line1,line2):
-    artist.set_clip_on(False)
-
-# adjust spine to be within ticks
-ax.spines['left'].set_bounds( -1, 1 )
-
 show()

examples/tests/backend_driver.py

@@ -84,6 +84,7 @@
     ]
 
 files['ticks_and_spines'] = [
+    'spines_demo_bounds.py',
     'ticklabels_demo_rotation.py',
     ]
 

examples/ticks_and_spines/spines_demo_bounds.py

@@ -0,0 +1,32 @@
+"""
+Demo of spines using custom bounds to limit the extent of the spine.
+"""
+import numpy as np
+import matplotlib.pyplot as plt
+
+
+x = np.linspace(0, 2*np.pi, 50)
+y = np.sin(x)
+y2 = y + 0.1 * np.random.normal(size=x.shape)
+
+fig, ax = plt.subplots()
+ax.plot(x, y, 'k--')
+ax.plot(x, y2, 'ro')
+
+# set ticks and tick labels
+ax.set_xlim((0, 2*np.pi))
+ax.set_xticks([0, np.pi, 2*np.pi])
+ax.set_xticklabels(['0', '$\pi$','2$\pi$'])
+ax.set_ylim((-1.5, 1.5))
+ax.set_yticks([-1, 0, 1])
+
+# Only draw spine between the y-ticks
+ax.spines['left'].set_bounds(-1, 1)
+# Hide the right and top spines
+ax.spines['right'].set_visible(False)
+ax.spines['top'].set_visible(False)
+# Only show ticks on the left and bottom spines
+ax.yaxis.set_ticks_position('left')
+ax.xaxis.set_ticks_position('bottom')
+
+plt.show()