DOC: Cleanup spines usage in examples

- hide spines using `set_visible(False)` instead of `set_color('none')`
- remove `ax.xaxis.set_ticks_position('bottom')` and
  `ax.yaxis.set_ticks_position('left')`, because these are already the
  defaults
- use multi-assignment (`spines[['left', 'bottom']].set_*`) when
  possible
- Remove "Custom spine bounds" example. This is already included in the
  "Spines" example

Author: timhoffm

doc/sphinxext/gallery_order.py

@@ -78,6 +78,9 @@ def __call__(self, item):
     "eventplot", "hist2d", "hexbin", "pie",
     # Unstructured
     "tricontour", "tricontourf", "tripcolor", "triplot",
+    # Spines
+    "spines", "spine_placement_demo", "spines_dropped",
+    "multiple_yaxis_with_spines", "centered_spines_with_arrows",
     ]
 explicit_subsection_order = [item + ".py" for item in list_all]
 

examples/showcase/integral.py

@@ -42,10 +42,7 @@ def func(x):
 fig.text(0.9, 0.05, '$x$')
 fig.text(0.1, 0.9, '$y$')
 
-ax.spines.right.set_visible(False)
-ax.spines.top.set_visible(False)
-ax.xaxis.set_ticks_position('bottom')
-
+ax.spines[['top', 'right']].set_visible(False)
 ax.set_xticks([a, b], labels=['$a$', '$b$'])
 ax.set_yticks([])
 

examples/showcase/xkcd.py

@@ -16,8 +16,7 @@
 
     fig = plt.figure()
     ax = fig.add_axes((0.1, 0.2, 0.8, 0.7))
-    ax.spines.right.set_color('none')
-    ax.spines.top.set_color('none')
+    ax.spines[['top', 'right']].set_visible(False)
     ax.set_xticks([])
     ax.set_yticks([])
     ax.set_ylim([-30, 10])
@@ -47,8 +46,7 @@
     fig = plt.figure()
     ax = fig.add_axes((0.1, 0.2, 0.8, 0.7))
     ax.bar([0, 1], [0, 100], 0.25)
-    ax.spines.right.set_color('none')
-    ax.spines.top.set_color('none')
+    ax.spines[['top', 'right']].set_visible(False)
     ax.xaxis.set_ticks_position('bottom')
     ax.set_xticks([0, 1])
     ax.set_xticklabels(['CONFIRMED BY\nEXPERIMENT', 'REFUTED BY\nEXPERIMENT'])

examples/spines/spines.py

@@ -11,6 +11,9 @@
 
 Each `.axes.Axes` has a list of `.Spine` objects, accessible
 via the container ``ax.spines``.
+
+.. redirect-from:: /gallery/spines/spines_bounds
+
 """
 import numpy as np
 import matplotlib.pyplot as plt
@@ -31,20 +34,16 @@
 # Hide the right and top spines
 ax1.spines.right.set_visible(False)
 ax1.spines.top.set_visible(False)
-# Only show ticks on the left and bottom spines
-ax1.yaxis.set_ticks_position('left')
-ax1.xaxis.set_ticks_position('bottom')
 
 ax2.plot(x, y)
+ax2.set_title('spines with bounds limited to data range')
 
-# Only draw spine between the y-ticks
-ax2.spines.left.set_bounds(-1, 1)
+# Only draw spines for the data range, not in the margins
+ax2.spines.bottom.set_bounds(x.min(), x.max())
+ax2.spines.left.set_bounds(y.min(), y.max())
 # Hide the right and top spines
 ax2.spines.right.set_visible(False)
 ax2.spines.top.set_visible(False)
-# Only show ticks on the left and bottom spines
-ax2.yaxis.set_ticks_position('left')
-ax2.xaxis.set_ticks_position('bottom')
 
 plt.show()
 
@@ -53,6 +52,5 @@
 #    The use of the following functions, methods, classes and modules is shown
 #    in this example:
 #
-#    - `matplotlib.Spines.set_visible`
-#    - `matplotlib.Spines.set_bounds`
-#    - `matplotlib.axis.set_ticks_position`
+#    - `matplotlib.spines.Spine.set_visible`
+#    - `matplotlib.spines.Spine.set_bounds`

examples/spines/spines_bounds.py

@@ -18,13 +18,8 @@
 ax.set_title('dropped spines')
 
 # Move left and bottom spines outward by 10 points
-ax.spines.left.set_position(('outward', 10))
-ax.spines.bottom.set_position(('outward', 10))
+ax.spines[['left', 'bottom']].set_position(('outward', 10))
 # 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')
+ax.spines[['top', 'right']].set_visible(False)
 
 plt.show()

examples/spines/spines_dropped.py

@@ -27,8 +27,6 @@ def adjacent_values(vals, q1, q3):
 
 
 def set_axis_style(ax, labels):
-    ax.xaxis.set_tick_params(direction='out')
-    ax.xaxis.set_ticks_position('bottom')
     ax.set_xticks(np.arange(1, len(labels) + 1), labels=labels)
     ax.set_xlim(0.25, len(labels) + 0.75)
     ax.set_xlabel('Sample name')

examples/statistics/customized_violin.py

@@ -18,9 +18,7 @@ def setup(ax, title):
     """Set up common parameters for the Axes in the example."""
     # only show the bottom spine
     ax.yaxis.set_major_locator(ticker.NullLocator())
-    ax.spines.right.set_color('none')
-    ax.spines.left.set_color('none')
-    ax.spines.top.set_color('none')
+    ax.spines[['left', 'right', 'top']].set_visible(False)
 
     # define tick positions
     ax.xaxis.set_major_locator(ticker.MultipleLocator(1.00))

examples/ticks/tick-formatters.py

@@ -17,9 +17,7 @@ def setup(ax, title):
     """Set up common parameters for the Axes in the example."""
     # only show the bottom spine
     ax.yaxis.set_major_locator(ticker.NullLocator())
-    ax.spines.right.set_color('none')
-    ax.spines.left.set_color('none')
-    ax.spines.top.set_color('none')
+    ax.spines[['left', 'right', 'top']].set_visible(False)
 
     ax.xaxis.set_ticks_position('bottom')
     ax.tick_params(which='major', width=1.00, length=5)