matplotlib · NelleV · Jan 28, 2017 · Jan 28, 2017
diff --git a/doc/users/dflt_style_changes.rst b/doc/users/dflt_style_changes.rst
@@ -18,6 +18,7 @@ values is a single line of python
 See :ref:`customizing-with-matplotlibrc-files` for details about how to
 persistently and selectively revert many of these changes.
 
+
 .. contents:: Table of Contents
    :depth: 2
    :local:

diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -795,10 +795,11 @@ def get_yaxis_text1_transform(self, pad_points):
             place axis elements in different locations.
 
         """
+        labels_valign = matplotlib.rcParams["ytick.alignment"]
         return (self.get_yaxis_transform(which='tick1') +
                 mtransforms.ScaledTranslation(-1 * pad_points / 72.0, 0,
                                               self.figure.dpi_scale_trans),
-                "center_baseline", "right")
+                labels_valign, "right")
 
     def get_yaxis_text2_transform(self, pad_points):
         """
@@ -821,10 +822,12 @@ def get_yaxis_text2_transform(self, pad_points):
             place axis elements in different locations.
 
         """
+        labels_valign = matplotlib.rcParams["ytick.alignment"]
+
         return (self.get_yaxis_transform(which='tick2') +
                 mtransforms.ScaledTranslation(pad_points / 72.0, 0,
                                               self.figure.dpi_scale_trans),
-                "center_baseline", "left")
+                labels_valign, "left")
 
     def _update_transScale(self):
         self.transScale.set(
@@ -2540,13 +2543,10 @@ def ticklabel_format(self, **kwargs):
                 raise ValueError("scilimits must be a sequence of 2 integers")
         if style[:3] == 'sci':
             sb = True
-        elif style in ['plain', 'comma']:
+        elif style == 'plain':
             sb = False
-            if style == 'plain':
-                cb = False
-            else:
-                cb = True
-                raise NotImplementedError("comma style remains to be added")
+        elif style == 'comma':
+            raise NotImplementedError("comma style remains to be added")
         elif style == '':
             sb = None
         else:

diff --git a/lib/matplotlib/mpl-data/stylelib/_classic_test.mplstyle b/lib/matplotlib/mpl-data/stylelib/_classic_test.mplstyle
diff --git a/lib/matplotlib/mpl-data/stylelib/classic.mplstyle b/lib/matplotlib/mpl-data/stylelib/classic.mplstyle
@@ -271,6 +271,7 @@ ytick.major.left     : True   # draw y axis left major ticks
 ytick.major.right    : True   # draw y axis right major ticks
 ytick.minor.left     : True   # draw y axis left minor ticks
 ytick.minor.right    : True   # draw y axis right minor ticks
+ytick.alignment      : center
 
 ### GRIDS
 grid.color       :   k       # grid color

diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py
@@ -467,6 +467,11 @@ def validate_font_properties(s):
     'verbose',
     ['silent', 'helpful', 'debug', 'debug-annoying'])
 
+validate_alignment = ValidateInStrings(
+    'alignment',
+    ['center', 'top', 'bottom', 'baseline',
+     'center_baseline'])
+
 def validate_whiskers(s):
     if s == 'range':
         return 'range'
@@ -1218,6 +1223,7 @@ def validate_animation_writer_path(p):
     # fontsize of the ytick labels
     'ytick.labelsize':   ['medium', validate_fontsize],
     'ytick.direction':   ['out', six.text_type],            # direction of yticks
+    'ytick.alignment':   ["center_baseline", validate_alignment],
 
     'grid.color':        ['#b0b0b0', validate_color],  # grid color
     'grid.linestyle':    ['-', six.text_type],      # solid

diff --git a/lib/matplotlib/testing/decorators.py b/lib/matplotlib/testing/decorators.py
@@ -11,9 +11,9 @@
 import warnings
 import unittest
 
-# Note - don't import nose up here - import it only as needed in functions. This
-# allows other functions here to be used by pytest-based testing suites without
-# requiring nose to be installed.
+# Note - don't import nose up here - import it only as needed in functions.
+# This allows other functions here to be used by pytest-based testing suites
+# without requiring nose to be installed.
 
 
 import matplotlib as mpl
@@ -158,7 +158,7 @@ def wrapped_callable(*args, **kwargs):
         return make_cleanup
     else:
         result = make_cleanup(style)
-        style = 'classic'
+        style = '_classic_test'
         return result
 
 
@@ -267,7 +267,8 @@ def setup(self):
                 'Figures and baseline_images count are not the same'
                 ' (`%s`)' % getattr(func, '__qualname__', func.__name__))
         except:
-            # Restore original settings before raising errors during the update.
+            # Restore original settings before raising errors during the
+            # update.
             self.teardown_class()
             raise
 
@@ -366,43 +367,42 @@ def runner_wrapper():
 
 def image_comparison(baseline_images=None, extensions=None, tol=0,
                      freetype_version=None, remove_text=False,
-                     savefig_kwarg=None, style='classic'):
+                     savefig_kwarg=None, style='_classic_test'):
     """
     Compare images generated by the test with those specified in
     *baseline_images*, which must correspond else an
     ImageComparisonFailure exception will be raised.
 
-    Keyword arguments:
+    Arguments
+    ---------
+    baseline_images : list
+        A list of strings specifying the names of the images generated by
+        calls to :meth:`matplotlib.figure.savefig`.
 
-      *baseline_images*: list
-        A list of strings specifying the names of the images generated
-        by calls to :meth:`matplotlib.figure.savefig`.
-
-      *extensions*: [ None | list ]
-
-        If *None*, default to all supported extensions.
+    extensions : [ None | list ]
 
+        If None, defaults to all supported extensions.
         Otherwise, a list of extensions to test. For example ['png','pdf'].
 
-      *tol*: (default 0)
+    tol : float, optional, default: 0
         The RMS threshold above which the test is considered failed.
 
-      *freetype_version*: str or tuple
-        The expected freetype version or range of versions for this
-        test to pass.
+    freetype_version : str or tuple
+        The expected freetype version or range of versions for this test to
+        pass.
 
-      *remove_text*: bool
-        Remove the title and tick text from the figure before
-        comparison.  This does not remove other, more deliberate,
-        text, such as legends and annotations.
+    remove_text : bool
+        Remove the title and tick text from the figure before comparison.
+        This does not remove other, more deliberate, text, such as legends and
+        annotations.
 
-      *savefig_kwarg*: dict
+    savefig_kwarg : dict
         Optional arguments that are passed to the savefig method.
 
-      *style*: string
-        Optional name for the base style to apply to the image
-        test. The test itself can also apply additional styles
-        if desired. Defaults to the 'classic' style.
+    style : string
+        Optional name for the base style to apply to the image test. The test
+        itself can also apply additional styles if desired. Defaults to the
+        '_classic_test' style.
 
     """
     if baseline_images is None:

diff --git a/...tests/baseline_images/test_axes/bar_tick_label_multiple_old_label_alignment.png b/...tests/baseline_images/test_axes/bar_tick_label_multiple_old_label_alignment.png
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -1176,6 +1176,15 @@ def test_bar_tick_label_multiple():
     ax.bar([1, 2.5], [1, 2], width=[0.2, 0.5], tick_label=['a', 'b'],
            align='center')
 
+@image_comparison(baseline_images=['bar_tick_label_multiple_old_alignment'],
+                  extensions=['png'])
+def test_bar_tick_label_multiple_old_alignment():
+    # From 2516: plot bar with array of string labels for x axis
+    matplotlib.rcParams["ytick.alignment"] = "center"
+    ax = plt.gca()
+    ax.bar([1, 2.5], [1, 2], width=[0.2, 0.5], tick_label=['a', 'b'],
+           align='center')
+
 
 @image_comparison(baseline_images=['barh_tick_label'],
                   extensions=['png'])

diff --git a/lib/matplotlib/tests/test_backend_pgf.py b/lib/matplotlib/tests/test_backend_pgf.py
@@ -83,7 +83,7 @@ def create_figure():
 
 # test compiling a figure to pdf with xelatex
 @needs_xelatex
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 @switch_backend('pgf')
 def test_xelatex():
     rc_xelatex = {'font.family': 'serif',
@@ -95,7 +95,7 @@ def test_xelatex():
 
 # test compiling a figure to pdf with pdflatex
 @needs_pdflatex
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 @switch_backend('pgf')
 def test_pdflatex():
     import os
@@ -117,7 +117,7 @@ def test_pdflatex():
 # test updating the rc parameters for each figure
 @needs_xelatex
 @needs_pdflatex
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 @switch_backend('pgf')
 def test_rcupdate():
     rc_sets = []
@@ -148,7 +148,7 @@ def test_rcupdate():
 
 # test backend-side clipping, since large numbers are not supported by TeX
 @needs_xelatex
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 @switch_backend('pgf')
 def test_pathclip():
     rc_xelatex = {'font.family': 'serif',
@@ -165,7 +165,7 @@ def test_pathclip():
 
 # test mixed mode rendering
 @needs_xelatex
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 @switch_backend('pgf')
 def test_mixedmode():
     rc_xelatex = {'font.family': 'serif',
@@ -180,7 +180,7 @@ def test_mixedmode():
 
 # test bbox_inches clipping
 @needs_xelatex
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 @switch_backend('pgf')
 def test_bbox_inches():
     rc_xelatex = {'font.family': 'serif',

diff --git a/lib/matplotlib/tests/test_ticker.py b/lib/matplotlib/tests/test_ticker.py
@@ -13,7 +13,7 @@
 import warnings
 
 
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 def test_MaxNLocator():
     loc = mticker.MaxNLocator(nbins=5)
     test_value = np.array([20., 40., 60., 80., 100.])
@@ -174,7 +174,7 @@ def test_SymmetricalLogLocator_set_params():
     assert sym.numticks == 8
 
 
-@cleanup(style='classic')
+@cleanup(style='_classic_test')
 @pytest.mark.parametrize('left, right, offset',
                          [(123, 189, 0),
                           (-189, -123, 0),