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‎doc/users/next_whats_new/2017-11-1_figure_align_labels.rst

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@@ -13,6 +13,8 @@ Only labels that have the same subplot locations are aligned. i.e. the
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ylabels are aligned only if the subplots are in the same column of the
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subplot layout.
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Alignemnt is persistent and automatic after these are called.
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A convenience wrapper `Figure.align_labels` calls both functions at once.
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.. plot::

‎examples/subplots_axes_and_figures/align_labels_demo.py

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@@ -3,15 +3,14 @@
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Aligning Labels
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===============
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6-
Aligning xlabel and ylabel using
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`Figure.align_xlabels` and
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Aligning xlabel and ylabel using `Figure.align_xlabels` and
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`Figure.align_ylabels`
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`Figure.align_labels` wraps these two functions.
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Note that
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the xlabel "XLabel1 1" would normally be much closer to the x-axis, and
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"YLabel1 0" would be much closer to the y-axis of their respective axes.
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Note that the xlabel "XLabel1 1" would normally be much closer to the
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x-axis, and "YLabel1 0" would be much closer to the y-axis of their
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respective axes.
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"""
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import matplotlib.pyplot as plt
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import numpy as np
@@ -33,6 +32,6 @@
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if i == 0:
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for tick in ax.get_xticklabels():
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tick.set_rotation(55)
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fig.align_labels() # same as fig.align_xlabels() and fig.align_ylabels()
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fig.align_labels() # same as fig.align_xlabels(); fig.align_ylabels()
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plt.show()

‎lib/matplotlib/axis.py

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Original file line numberDiff line numberDiff line change
@@ -1675,8 +1675,8 @@ def set_ticks(self, ticks, minor=False):
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def _get_tick_boxes_siblings(self, renderer):
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"""
1678-
Get the bounding boxes for this axis and its sibblings
1679-
as set by `Figure.align_xlabels` or ``Figure.align_ylables`.
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Get the bounding boxes for this `.axis` and its siblings
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as set by `.Figure.align_xlabels` or `.Figure.align_ylablels`.
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By default it just gets bboxes for self.
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"""

‎lib/matplotlib/figure.py

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@@ -2084,9 +2084,13 @@ def tight_layout(self, renderer=None, pad=1.08, h_pad=None, w_pad=None,
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pad=pad, h_pad=h_pad, w_pad=w_pad, rect=rect)
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self.subplots_adjust(**kwargs)
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2087-
def align_xlabels(self, axs=None, renderer=None):
2087+
def align_xlabels(self, axs=None):
20882088
"""
2089-
Align the xlabels of subplots in this figure.
2089+
Align the ylabels of subplots in the same subplot column if label
2090+
alignment is being done automatically (i.e. the label position is
2091+
not manually set).
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2093+
Alignment persists for draw events after this is called.
20902094
20912095
If a label is on the bottom, it is aligned with labels on axes that
20922096
also have their label on the bottom and that have the same
@@ -2096,11 +2100,8 @@ def align_xlabels(self, axs=None, renderer=None):
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Parameters
20972101
----------
20982102
axs : list of `~matplotlib.axes.Axes` (None)
2099-
Optional list of `~matplotlib.axes.Axes` to align
2100-
the xlabels.
2101-
2102-
renderer : (None)
2103-
Optional renderer to do the adjustment on.
2103+
Optional list of (or ndarray) `~matplotlib.axes.Axes` to align
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the xlabels. Default is to align all axes on the figure.
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21052106
See Also
21062107
--------
@@ -2121,11 +2122,6 @@ def align_xlabels(self, axs=None, renderer=None):
21212122
21222123
"""
21232124

2124-
from .tight_layout import get_renderer
2125-
2126-
if renderer is None:
2127-
renderer = get_renderer(self)
2128-
21292125
if axs is None:
21302126
axs = self.axes
21312127

@@ -2135,25 +2131,30 @@ def align_xlabels(self, axs=None, renderer=None):
21352131
_log.debug(' Working on: %s', ax.get_xlabel())
21362132
ss = ax.get_subplotspec()
21372133
nrows, ncols, row0, row1, col0, col1 = ss.get_rows_columns()
2138-
same = [ax]
2139-
labpo = ax.xaxis.get_label_position()
2134+
labpo = ax.xaxis.get_label_position() # top or bottom
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2136+
# loop through other axes, and search for label positions
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# that are same as this one, and that share the appropriate
2138+
# row number.
2139+
# Add to a list associated with each axes of sibblings.
2140+
# This list is inspected in `axis.draw` by
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# `axis._update_label_position`.
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for axc in axs:
21412143
if axc.xaxis.get_label_position() == labpo:
21422144
ss = axc.get_subplotspec()
21432145
nrows, ncols, rowc0, rowc1, colc, col1 = \
21442146
ss.get_rows_columns()
2145-
if (labpo == 'bottom') and (rowc1 == row1):
2146-
same += [axc]
2147-
elif (labpo == 'top') and (rowc0 == row0):
2148-
same += [axc]
2149-
2150-
for axx in same:
2151-
_log.debug(' Same: %s', axx.xaxis.label)
2152-
axx.xaxis._align_label_siblings += [ax.xaxis]
2147+
if (labpo == 'bottom' and rowc1 == row1 or
2148+
labpo == 'top' and rowc0 == row0):
2149+
axc.xaxis._align_label_siblings += [ax.xaxis]
21532150

2154-
def align_ylabels(self, axs=None, renderer=None):
2151+
def align_ylabels(self, axs=None):
21552152
"""
2156-
Align the ylabels of subplots in this figure.
2153+
Align the ylabels of subplots in the same subplot column if label
2154+
alignment is being done automatically (i.e. the label position is
2155+
not manually set).
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2157+
Alignment persists for draw events after this is called.
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21582159
If a label is on the left, it is aligned with labels on axes that
21592160
also have their label on the left and that have the same
@@ -2163,11 +2164,8 @@ def align_ylabels(self, axs=None, renderer=None):
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Parameters
21642165
----------
21652166
axs : list of `~matplotlib.axes.Axes` (None)
2166-
Optional list of `~matplotlib.axes.Axes` to align
2167-
the ylabels.
2168-
2169-
renderer : (None)
2170-
Optional renderer to do the adjustment on.
2167+
Optional list (or ndarray) of `~matplotlib.axes.Axes` to align
2168+
the ylabels. Default is to align all axes on the figure.
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See Also
21732171
--------
@@ -2187,11 +2185,6 @@ def align_ylabels(self, axs=None, renderer=None):
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21882186
"""
21892187

2190-
from .tight_layout import get_renderer
2191-
2192-
if renderer is None:
2193-
renderer = get_renderer(self)
2194-
21952188
if axs is None:
21962189
axs = self.axes
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@@ -2202,97 +2195,44 @@ def align_ylabels(self, axs=None, renderer=None):
22022195
nrows, ncols, row0, row1, col0, col1 = ss.get_rows_columns()
22032196
same = [ax]
22042197
labpo = ax.yaxis.get_label_position()
2198+
# loop through other axes, and search for label positions
2199+
# that are same as this one, and that share the appropriate
2200+
# column number.
2201+
# Add to a list associated with each axes of sibblings.
2202+
# This list is inspected in `axis.draw` by
2203+
# `axis._update_label_position`.
22052204
for axc in axs:
22062205
if axc != ax:
22072206
if axc.yaxis.get_label_position() == labpo:
22082207
ss = axc.get_subplotspec()
22092208
nrows, ncols, row0, row1, colc0, colc1 = \
22102209
ss.get_rows_columns()
2211-
if (labpo == 'left') and (colc0 == col0):
2212-
same += [axc]
2213-
elif (labpo == 'right') and (colc1 == col1):
2214-
same += [axc]
2215-
for axx in same:
2216-
_log.debug(' Same: %s', axx.yaxis.label)
2217-
axx.yaxis._align_label_siblings += [ax.yaxis]
2218-
2219-
# place holder until #9498 is merged...
2220-
def align_titles(self, axs=None, renderer=None):
2221-
"""
2222-
Align the titles of subplots in this figure.
2223-
2224-
Parameters
2225-
----------
2226-
axs : list of `~matplotlib.axes.Axes` (None)
2227-
Optional list of axes to align the xlabels.
2228-
2229-
renderer : (None)
2230-
Optional renderer to do the adjustment on.
2231-
2232-
See Also
2233-
--------
2234-
matplotlib.figure.Figure.align_xlabels
2235-
2236-
matplotlib.figure.Figure.align_ylabels
2237-
"""
2238-
2239-
from .tight_layout import get_renderer
2240-
2241-
if renderer is None:
2242-
renderer = get_renderer(self)
2243-
2244-
if axs is None:
2245-
axs = self.axes
2246-
2247-
while len(axs):
2248-
ax = axs.pop()
2249-
ax._update_title_position(renderer)
2250-
same = [ax]
2251-
if ax._autolabelpos:
2252-
ss = ax.get_subplotspec()
2253-
nrows, ncols, row0, row1, col0, col1 = ss.get_rows_columns()
2254-
labpo = ax.xaxis.get_label_position()
2255-
for axc in axs:
2256-
axc._update_title_position(renderer)
2257-
if axc._autolabelpos:
2258-
ss = axc.get_subplotspec()
2259-
nrows, ncols, rowc0, rowc1, colc, col1 = \
2260-
ss.get_rows_columns()
2261-
if (rowc0 == row0):
2262-
same += [axc]
2263-
2264-
x0, y0 = ax.title.get_position()
2265-
for axx in same:
2266-
x, y = axx.title.get_position()
2267-
if y > y0:
2268-
ax.title.set_position(x0, y)
2269-
y0 = y
2270-
elif y0 > y:
2271-
axx.title.set_positions(x, y0)
2210+
if (labpo == 'left' and colc0 == col0 or
2211+
labpo == 'right' and colc1 == col1):
2212+
axc.yaxis._align_label_siblings += [ax.yaxis]
22722213

2273-
def align_labels(self, axs=None, renderer=None):
2214+
def align_labels(self, axs=None):
22742215
"""
22752216
Align the xlabels and ylabels of subplots with the same subplots
2276-
row or column (respectively).
2217+
row or column (respectively) if label alignment is being
2218+
done automatically (i.e. the label position is not manually set).
2219+
2220+
Alignment persists for draw events after this is called.
22772221
22782222
Parameters
22792223
----------
22802224
axs : list of `~matplotlib.axes.Axes` (None)
22812225
Optional list (or ndarray) of `~matplotlib.axes.Axes` to
2282-
align the labels.
2283-
2284-
renderer : (None)
2285-
Optional renderer to do the adjustment on.
2226+
align the labels. Default is to align all axes on the figure.
22862227
22872228
See Also
22882229
--------
22892230
matplotlib.figure.Figure.align_xlabels
22902231
22912232
matplotlib.figure.Figure.align_ylabels
22922233
"""
2293-
self.align_xlabels(axs=axs, renderer=renderer)
2294-
self.align_ylabels(axs=axs, renderer=renderer)
2295-
# self.align_titles(axs=axs, renderer=renderer)
2234+
self.align_xlabels(axs=axs)
2235+
self.align_ylabels(axs=axs)
22962236

22972237

22982238
def figaspect(arg):

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