forked from 170010011/fr
339 lines
13 KiB
Python
339 lines
13 KiB
Python
|
"""
|
||
|
|
Routines to adjust subplot params so that subplots are
|
||
|
|
nicely fit in the figure. In doing so, only axis labels, tick labels, axes
|
||
|
|
titles and offsetboxes that are anchored to axes are currently considered.
|
||
|
|
|
||
|
|
Internally, this module assumes that the margins (left_margin, etc.) which are
|
||
|
|
differences between ax.get_tightbbox and ax.bbox are independent of axes
|
||
|
|
position. This may fail if Axes.adjustable is datalim. Also, This will fail
|
||
|
|
for some cases (for example, left or right margin is affected by xlabel).
|
||
|
|
"""
|
||
|
|
|
||
|
|
import numpy as np
|
||
|
|
|
||
|
|
from matplotlib import cbook, rcParams
|
||
|
|
from matplotlib.font_manager import FontProperties
|
||
|
|
from matplotlib.transforms import TransformedBbox, Bbox
|
||
|
|
|
||
|
|
|
||
|
|
def auto_adjust_subplotpars(
|
||
|
|
fig, renderer, nrows_ncols, num1num2_list, subplot_list,
|
||
|
|
ax_bbox_list=None, pad=1.08, h_pad=None, w_pad=None, rect=None):
|
||
|
|
"""
|
||
|
|
Return a dict of subplot parameters to adjust spacing between subplots
|
||
|
|
or ``None`` if resulting axes would have zero height or width.
|
||
|
|
|
||
|
|
Note that this function ignores geometry information of subplot
|
||
|
|
itself, but uses what is given by the *nrows_ncols* and *num1num2_list*
|
||
|
|
parameters. Also, the results could be incorrect if some subplots have
|
||
|
|
``adjustable=datalim``.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
nrows_ncols : Tuple[int, int]
|
||
|
|
Number of rows and number of columns of the grid.
|
||
|
|
num1num2_list : List[int]
|
||
|
|
List of numbers specifying the area occupied by the subplot
|
||
|
|
subplot_list : list of subplots
|
||
|
|
List of subplots that will be used to calculate optimal subplot_params.
|
||
|
|
pad : float
|
||
|
|
Padding between the figure edge and the edges of subplots, as a
|
||
|
|
fraction of the font size.
|
||
|
|
h_pad, w_pad : float
|
||
|
|
Padding (height/width) between edges of adjacent subplots, as a
|
||
|
|
fraction of the font size. Defaults to *pad*.
|
||
|
|
rect : Tuple[float, float, float, float]
|
||
|
|
[left, bottom, right, top] in normalized (0, 1) figure coordinates.
|
||
|
|
"""
|
||
|
|
rows, cols = nrows_ncols
|
||
|
|
|
||
|
|
font_size_inches = (
|
||
|
|
FontProperties(size=rcParams["font.size"]).get_size_in_points() / 72)
|
||
|
|
pad_inches = pad * font_size_inches
|
||
|
|
vpad_inches = h_pad * font_size_inches if h_pad is not None else pad_inches
|
||
|
|
hpad_inches = w_pad * font_size_inches if w_pad is not None else pad_inches
|
||
|
|
|
||
|
|
if len(num1num2_list) != len(subplot_list) or len(subplot_list) == 0:
|
||
|
|
raise ValueError
|
||
|
|
|
||
|
|
if rect is None:
|
||
|
|
margin_left = margin_bottom = margin_right = margin_top = None
|
||
|
|
else:
|
||
|
|
margin_left, margin_bottom, _right, _top = rect
|
||
|
|
margin_right = 1 - _right if _right else None
|
||
|
|
margin_top = 1 - _top if _top else None
|
||
|
|
|
||
|
|
vspaces = np.zeros((rows + 1, cols))
|
||
|
|
hspaces = np.zeros((rows, cols + 1))
|
||
|
|
|
||
|
|
if ax_bbox_list is None:
|
||
|
|
ax_bbox_list = [
|
||
|
|
Bbox.union([ax.get_position(original=True) for ax in subplots])
|
||
|
|
for subplots in subplot_list]
|
||
|
|
|
||
|
|
for subplots, ax_bbox, (num1, num2) in zip(subplot_list,
|
||
|
|
ax_bbox_list,
|
||
|
|
num1num2_list):
|
||
|
|
if all(not ax.get_visible() for ax in subplots):
|
||
|
|
continue
|
||
|
|
|
||
|
|
bb = []
|
||
|
|
for ax in subplots:
|
||
|
|
if ax.get_visible():
|
||
|
|
try:
|
||
|
|
bb += [ax.get_tightbbox(renderer, for_layout_only=True)]
|
||
|
|
except TypeError:
|
||
|
|
bb += [ax.get_tightbbox(renderer)]
|
||
|
|
|
||
|
|
tight_bbox_raw = Bbox.union(bb)
|
||
|
|
tight_bbox = TransformedBbox(tight_bbox_raw,
|
||
|
|
fig.transFigure.inverted())
|
||
|
|
|
||
|
|
row1, col1 = divmod(num1, cols)
|
||
|
|
if num2 is None:
|
||
|
|
num2 = num1
|
||
|
|
row2, col2 = divmod(num2, cols)
|
||
|
|
|
||
|
|
for row_i in range(row1, row2 + 1):
|
||
|
|
hspaces[row_i, col1] += ax_bbox.xmin - tight_bbox.xmin # left
|
||
|
|
hspaces[row_i, col2 + 1] += tight_bbox.xmax - ax_bbox.xmax # right
|
||
|
|
for col_i in range(col1, col2 + 1):
|
||
|
|
vspaces[row1, col_i] += tight_bbox.ymax - ax_bbox.ymax # top
|
||
|
|
vspaces[row2 + 1, col_i] += ax_bbox.ymin - tight_bbox.ymin # bot.
|
||
|
|
|
||
|
|
fig_width_inch, fig_height_inch = fig.get_size_inches()
|
||
|
|
|
||
|
|
# margins can be negative for axes with aspect applied, so use max(, 0) to
|
||
|
|
# make them nonnegative.
|
||
|
|
if not margin_left:
|
||
|
|
margin_left = (max(hspaces[:, 0].max(), 0)
|
||
|
|
+ pad_inches / fig_width_inch)
|
||
|
|
if not margin_right:
|
||
|
|
margin_right = (max(hspaces[:, -1].max(), 0)
|
||
|
|
+ pad_inches / fig_width_inch)
|
||
|
|
if not margin_top:
|
||
|
|
margin_top = (max(vspaces[0, :].max(), 0)
|
||
|
|
+ pad_inches / fig_height_inch)
|
||
|
|
suptitle = fig._suptitle
|
||
|
|
if suptitle and suptitle.get_in_layout():
|
||
|
|
rel_suptitle_height = fig.transFigure.inverted().transform_bbox(
|
||
|
|
suptitle.get_window_extent(renderer)).height
|
||
|
|
margin_top += rel_suptitle_height + pad_inches / fig_height_inch
|
||
|
|
if not margin_bottom:
|
||
|
|
margin_bottom = (max(vspaces[-1, :].max(), 0)
|
||
|
|
+ pad_inches / fig_height_inch)
|
||
|
|
|
||
|
|
if margin_left + margin_right >= 1:
|
||
|
|
cbook._warn_external('Tight layout not applied. The left and right '
|
||
|
|
'margins cannot be made large enough to '
|
||
|
|
'accommodate all axes decorations. ')
|
||
|
|
return None
|
||
|
|
if margin_bottom + margin_top >= 1:
|
||
|
|
cbook._warn_external('Tight layout not applied. The bottom and top '
|
||
|
|
'margins cannot be made large enough to '
|
||
|
|
'accommodate all axes decorations. ')
|
||
|
|
return None
|
||
|
|
|
||
|
|
kwargs = dict(left=margin_left,
|
||
|
|
right=1 - margin_right,
|
||
|
|
bottom=margin_bottom,
|
||
|
|
top=1 - margin_top)
|
||
|
|
|
||
|
|
if cols > 1:
|
||
|
|
hspace = hspaces[:, 1:-1].max() + hpad_inches / fig_width_inch
|
||
|
|
# axes widths:
|
||
|
|
h_axes = (1 - margin_right - margin_left - hspace * (cols - 1)) / cols
|
||
|
|
if h_axes < 0:
|
||
|
|
cbook._warn_external('Tight layout not applied. tight_layout '
|
||
|
|
'cannot make axes width small enough to '
|
||
|
|
'accommodate all axes decorations')
|
||
|
|
return None
|
||
|
|
else:
|
||
|
|
kwargs["wspace"] = hspace / h_axes
|
||
|
|
if rows > 1:
|
||
|
|
vspace = vspaces[1:-1, :].max() + vpad_inches / fig_height_inch
|
||
|
|
v_axes = (1 - margin_top - margin_bottom - vspace * (rows - 1)) / rows
|
||
|
|
if v_axes < 0:
|
||
|
|
cbook._warn_external('Tight layout not applied. tight_layout '
|
||
|
|
'cannot make axes height small enough to '
|
||
|
|
'accommodate all axes decorations')
|
||
|
|
return None
|
||
|
|
else:
|
||
|
|
kwargs["hspace"] = vspace / v_axes
|
||
|
|
|
||
|
|
return kwargs
|
||
|
|
|
||
|
|
|
||
|
|
def get_renderer(fig):
|
||
|
|
if fig._cachedRenderer:
|
||
|
|
return fig._cachedRenderer
|
||
|
|
else:
|
||
|
|
canvas = fig.canvas
|
||
|
|
if canvas and hasattr(canvas, "get_renderer"):
|
||
|
|
return canvas.get_renderer()
|
||
|
|
else:
|
||
|
|
from . import backend_bases
|
||
|
|
return backend_bases._get_renderer(fig)
|
||
|
|
|
||
|
|
|
||
|
|
def get_subplotspec_list(axes_list, grid_spec=None):
|
||
|
|
"""
|
||
|
|
Return a list of subplotspec from the given list of axes.
|
||
|
|
|
||
|
|
For an instance of axes that does not support subplotspec, None is inserted
|
||
|
|
in the list.
|
||
|
|
|
||
|
|
If grid_spec is given, None is inserted for those not from the given
|
||
|
|
grid_spec.
|
||
|
|
"""
|
||
|
|
subplotspec_list = []
|
||
|
|
for ax in axes_list:
|
||
|
|
axes_or_locator = ax.get_axes_locator()
|
||
|
|
if axes_or_locator is None:
|
||
|
|
axes_or_locator = ax
|
||
|
|
|
||
|
|
if hasattr(axes_or_locator, "get_subplotspec"):
|
||
|
|
subplotspec = axes_or_locator.get_subplotspec()
|
||
|
|
subplotspec = subplotspec.get_topmost_subplotspec()
|
||
|
|
gs = subplotspec.get_gridspec()
|
||
|
|
if grid_spec is not None:
|
||
|
|
if gs != grid_spec:
|
||
|
|
subplotspec = None
|
||
|
|
elif gs.locally_modified_subplot_params():
|
||
|
|
subplotspec = None
|
||
|
|
else:
|
||
|
|
subplotspec = None
|
||
|
|
|
||
|
|
subplotspec_list.append(subplotspec)
|
||
|
|
|
||
|
|
return subplotspec_list
|
||
|
|
|
||
|
|
|
||
|
|
def get_tight_layout_figure(fig, axes_list, subplotspec_list, renderer,
|
||
|
|
pad=1.08, h_pad=None, w_pad=None, rect=None):
|
||
|
|
"""
|
||
|
|
Return subplot parameters for tight-layouted-figure with specified padding.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
fig : Figure
|
||
|
|
axes_list : list of Axes
|
||
|
|
subplotspec_list : list of `.SubplotSpec`
|
||
|
|
The subplotspecs of each axes.
|
||
|
|
renderer : renderer
|
||
|
|
pad : float
|
||
|
|
Padding between the figure edge and the edges of subplots, as a
|
||
|
|
fraction of the font size.
|
||
|
|
h_pad, w_pad : float
|
||
|
|
Padding (height/width) between edges of adjacent subplots. Defaults to
|
||
|
|
*pad*.
|
||
|
|
rect : Tuple[float, float, float, float], optional
|
||
|
|
(left, bottom, right, top) rectangle in normalized figure coordinates
|
||
|
|
that the whole subplots area (including labels) will fit into.
|
||
|
|
Defaults to using the entire figure.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
subplotspec or None
|
||
|
|
subplotspec kwargs to be passed to `.Figure.subplots_adjust` or
|
||
|
|
None if tight_layout could not be accomplished.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
subplot_list = []
|
||
|
|
nrows_list = []
|
||
|
|
ncols_list = []
|
||
|
|
ax_bbox_list = []
|
||
|
|
|
||
|
|
# Multiple axes can share same subplot_interface (e.g., axes_grid1); thus
|
||
|
|
# we need to join them together.
|
||
|
|
subplot_dict = {}
|
||
|
|
|
||
|
|
subplotspec_list2 = []
|
||
|
|
|
||
|
|
for ax, subplotspec in zip(axes_list, subplotspec_list):
|
||
|
|
if subplotspec is None:
|
||
|
|
continue
|
||
|
|
|
||
|
|
subplots = subplot_dict.setdefault(subplotspec, [])
|
||
|
|
|
||
|
|
if not subplots:
|
||
|
|
myrows, mycols, _, _ = subplotspec.get_geometry()
|
||
|
|
nrows_list.append(myrows)
|
||
|
|
ncols_list.append(mycols)
|
||
|
|
subplotspec_list2.append(subplotspec)
|
||
|
|
subplot_list.append(subplots)
|
||
|
|
ax_bbox_list.append(subplotspec.get_position(fig))
|
||
|
|
|
||
|
|
subplots.append(ax)
|
||
|
|
|
||
|
|
if len(nrows_list) == 0 or len(ncols_list) == 0:
|
||
|
|
return {}
|
||
|
|
|
||
|
|
max_nrows = max(nrows_list)
|
||
|
|
max_ncols = max(ncols_list)
|
||
|
|
|
||
|
|
num1num2_list = []
|
||
|
|
for subplotspec in subplotspec_list2:
|
||
|
|
rows, cols, num1, num2 = subplotspec.get_geometry()
|
||
|
|
div_row, mod_row = divmod(max_nrows, rows)
|
||
|
|
div_col, mod_col = divmod(max_ncols, cols)
|
||
|
|
if mod_row != 0:
|
||
|
|
cbook._warn_external('tight_layout not applied: number of rows '
|
||
|
|
'in subplot specifications must be '
|
||
|
|
'multiples of one another.')
|
||
|
|
return {}
|
||
|
|
if mod_col != 0:
|
||
|
|
cbook._warn_external('tight_layout not applied: number of '
|
||
|
|
'columns in subplot specifications must be '
|
||
|
|
'multiples of one another.')
|
||
|
|
return {}
|
||
|
|
|
||
|
|
rowNum1, colNum1 = divmod(num1, cols)
|
||
|
|
if num2 is None:
|
||
|
|
rowNum2, colNum2 = rowNum1, colNum1
|
||
|
|
else:
|
||
|
|
rowNum2, colNum2 = divmod(num2, cols)
|
||
|
|
|
||
|
|
num1num2_list.append((rowNum1 * div_row * max_ncols +
|
||
|
|
colNum1 * div_col,
|
||
|
|
((rowNum2 + 1) * div_row - 1) * max_ncols +
|
||
|
|
(colNum2 + 1) * div_col - 1))
|
||
|
|
|
||
|
|
kwargs = auto_adjust_subplotpars(fig, renderer,
|
||
|
|
nrows_ncols=(max_nrows, max_ncols),
|
||
|
|
num1num2_list=num1num2_list,
|
||
|
|
subplot_list=subplot_list,
|
||
|
|
ax_bbox_list=ax_bbox_list,
|
||
|
|
pad=pad, h_pad=h_pad, w_pad=w_pad)
|
||
|
|
|
||
|
|
# kwargs can be none if tight_layout fails...
|
||
|
|
if rect is not None and kwargs is not None:
|
||
|
|
# if rect is given, the whole subplots area (including
|
||
|
|
# labels) will fit into the rect instead of the
|
||
|
|
# figure. Note that the rect argument of
|
||
|
|
# *auto_adjust_subplotpars* specify the area that will be
|
||
|
|
# covered by the total area of axes.bbox. Thus we call
|
||
|
|
# auto_adjust_subplotpars twice, where the second run
|
||
|
|
# with adjusted rect parameters.
|
||
|
|
|
||
|
|
left, bottom, right, top = rect
|
||
|
|
if left is not None:
|
||
|
|
left += kwargs["left"]
|
||
|
|
if bottom is not None:
|
||
|
|
bottom += kwargs["bottom"]
|
||
|
|
if right is not None:
|
||
|
|
right -= (1 - kwargs["right"])
|
||
|
|
if top is not None:
|
||
|
|
top -= (1 - kwargs["top"])
|
||
|
|
|
||
|
|
kwargs = auto_adjust_subplotpars(fig, renderer,
|
||
|
|
nrows_ncols=(max_nrows, max_ncols),
|
||
|
|
num1num2_list=num1num2_list,
|
||
|
|
subplot_list=subplot_list,
|
||
|
|
ax_bbox_list=ax_bbox_list,
|
||
|
|
pad=pad, h_pad=h_pad, w_pad=w_pad,
|
||
|
|
rect=(left, bottom, right, top))
|
||
|
|
|
||
|
|
return kwargs
|