matplotlib.github.com/2.2.2/_modules/matplotlib/figure.html at main · ACPMAD/matplotlib.github.com

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>matplotlib.figure — Matplotlib 2.2.2 documentation</title>

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<div id="unreleased-message"> You are reading an old version of the documentation (v2.2.2). For the latest version see <a href="/stable/">https://matplotlib.org/stable/</a> </div>

<div style="float: left; position: absolute; width: 496px; bottom: 0; padding-bottom: 24px">Version 2.2.2</div>

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<h1>Source code for matplotlib.figure</h1><div class="highlight"><pre>

"""

The figure module provides the top-level

:class:`~matplotlib.artist.Artist`, the :class:`Figure`, which

contains all the plot elements. The following classes are defined

:class:`SubplotParams`

control the default spacing of the subplots

:class:`Figure`

top level container for all plot elements

"""

from __future__ import (absolute_import, division, print_function,

unicode_literals)

import six

import logging

import warnings

import numpy as np

from matplotlib import rcParams

from matplotlib import docstring

from matplotlib import __version__ as _mpl_version

import matplotlib.artist as martist

from matplotlib.artist import Artist, allow_rasterization

import matplotlib.cbook as cbook

from matplotlib.cbook import Stack, iterable

from matplotlib import image as mimage

from matplotlib.image import FigureImage

import matplotlib.colorbar as cbar

from matplotlib.axes import Axes, SubplotBase, subplot_class_factory

from matplotlib.blocking_input import BlockingMouseInput, BlockingKeyMouseInput

from matplotlib.gridspec import GridSpec

import matplotlib.legend as mlegend

from matplotlib.patches import Rectangle

from matplotlib.projections import (get_projection_names,

process_projection_requirements)

from matplotlib.text import Text, _process_text_args

from matplotlib.transforms import (Affine2D, Bbox, BboxTransformTo,

TransformedBbox)

import matplotlib._layoutbox as layoutbox

from matplotlib.backend_bases import NonGuiException

_log = logging.getLogger(__name__)

docstring.interpd.update(projection_names=get_projection_names())

def _stale_figure_callback(self, val):

if self.figure:

self.figure.stale = val

<div class="viewcode-block" id="AxesStack"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack">[docs]</a>class AxesStack(Stack):

"""

Specialization of the Stack to handle all tracking of Axes in a Figure.

This stack stores ``key, (ind, axes)`` pairs, where:

* **key** should be a hash of the args and kwargs

used in generating the Axes.

* **ind** is a serial number for tracking the order

in which axes were added.

The AxesStack is a callable, where ``ax_stack()`` returns

the current axes. Alternatively the :meth:`current_key_axes` will

return the current key and associated axes.

"""

def __init__(self):

Stack.__init__(self)

self._ind = 0

<div class="viewcode-block" id="AxesStack.as_list"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack.as_list">[docs]</a> def as_list(self):

"""

Return a list of the Axes instances that have been added to the figure

"""

ia_list = [a for k, a in self._elements]

ia_list.sort()

return [a for i, a in ia_list]</div>

<div class="viewcode-block" id="AxesStack.get"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack.get">[docs]</a> def get(self, key):

"""

Return the Axes instance that was added with *key*.

If it is not present, return None.

"""

item = dict(self._elements).get(key)

if item is None:

return None

cbook.warn_deprecated(

"2.1",

"Adding an axes using the same arguments as a previous axes "

"currently reuses the earlier instance. In a future version, "

"a new instance will always be created and returned. Meanwhile, "

"this warning can be suppressed, and the future behavior ensured, "

"by passing a unique label to each axes instance.")

return item[1]</div>

def _entry_from_axes(self, e):

ind, k = {a: (ind, k) for k, (ind, a) in self._elements}[e]

return (k, (ind, e))

<div class="viewcode-block" id="AxesStack.remove"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack.remove">[docs]</a> def remove(self, a):

"""Remove the axes from the stack."""

Stack.remove(self, self._entry_from_axes(a))</div>

<div class="viewcode-block" id="AxesStack.bubble"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack.bubble">[docs]</a> def bubble(self, a):

"""

Move the given axes, which must already exist in the

stack, to the top.

"""

return Stack.bubble(self, self._entry_from_axes(a))</div>

<div class="viewcode-block" id="AxesStack.add"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack.add">[docs]</a> def add(self, key, a):

"""

Add Axes *a*, with key *key*, to the stack, and return the stack.

If *key* is unhashable, replace it by a unique, arbitrary object.

If *a* is already on the stack, don't add it again, but

return *None*.

"""

# All the error checking may be unnecessary; but this method

# is called so seldom that the overhead is negligible.

if not isinstance(a, Axes):

raise ValueError("second argument, {!r}, is not an Axes".format(a))

try:

hash(key)

except TypeError:

key = object()

a_existing = self.get(key)

if a_existing is not None:

Stack.remove(self, (key, a_existing))

warnings.warn(

"key {!r} already existed; Axes is being replaced".format(key))

# I don't think the above should ever happen.

if a in self:

return None

self._ind += 1

return Stack.push(self, (key, (self._ind, a)))</div>

<div class="viewcode-block" id="AxesStack.current_key_axes"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack.current_key_axes">[docs]</a> def current_key_axes(self):

"""

Return a tuple of ``(key, axes)`` for the active axes.

If no axes exists on the stack, then returns ``(None, None)``.

"""

if not len(self._elements):

return self._default, self._default

else:

key, (index, axes) = self._elements[self._pos]

return key, axes</div>

def __call__(self):

return self.current_key_axes()[1]

def __contains__(self, a):

return a in self.as_list()</div>

<div class="viewcode-block" id="SubplotParams"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.SubplotParams.html#matplotlib.figure.SubplotParams">[docs]</a>class SubplotParams(object):

"""

A class to hold the parameters for a subplot

"""

def __init__(self, left=None, bottom=None, right=None, top=None,

wspace=None, hspace=None):

"""

All dimensions are fraction of the figure width or height.

All values default to their rc params

The following attributes are available

left : 0.125

The left side of the subplots of the figure

right : 0.9

The right side of the subplots of the figure

bottom : 0.1

The bottom of the subplots of the figure

top : 0.9

The top of the subplots of the figure

wspace : 0.2

The amount of width reserved for space between subplots,

expressed as a fraction of the average axis width

hspace : 0.2

The amount of height reserved for space between subplots,

expressed as a fraction of the average axis height

"""

self.validate = True

self.update(left, bottom, right, top, wspace, hspace)

<div class="viewcode-block" id="SubplotParams.update"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.SubplotParams.html#matplotlib.figure.SubplotParams.update">[docs]</a> def update(self, left=None, bottom=None, right=None, top=None,

"""

Update the current values. If any kwarg is None, default to

the current value, if set, otherwise to rc

"""

thisleft = getattr(self, 'left', None)

thisright = getattr(self, 'right', None)

thistop = getattr(self, 'top', None)

thisbottom = getattr(self, 'bottom', None)

thiswspace = getattr(self, 'wspace', None)

thishspace = getattr(self, 'hspace', None)

self._update_this('left', left)

self._update_this('right', right)

self._update_this('bottom', bottom)

self._update_this('top', top)

self._update_this('wspace', wspace)

self._update_this('hspace', hspace)

def reset():

self.left = thisleft

self.right = thisright

self.top = thistop

self.bottom = thisbottom

self.wspace = thiswspace

self.hspace = thishspace

if self.validate:

if self.left >= self.right:

reset()

raise ValueError('left cannot be >= right')

if self.bottom >= self.top:

reset()

raise ValueError('bottom cannot be >= top')</div>

def _update_this(self, s, val):

if val is None:

val = getattr(self, s, None)

if val is None:

key = 'figure.subplot.' + s

val = rcParams[key]

setattr(self, s, val)</div>

<div class="viewcode-block" id="Figure"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure">[docs]</a>class Figure(Artist):

"""

The Figure instance supports callbacks through a *callbacks* attribute

which is a `.CallbackRegistry` instance. The events you can connect to

are 'dpi_changed', and the callback will be called with ``func(fig)`` where

fig is the `Figure` instance.

Attributes

----------

patch

The `.Rectangle` instance representing the figure patch.

suppressComposite

For multiple figure images, the figure will make composite images

depending on the renderer option_image_nocomposite function. If

*suppressComposite* is a boolean, this will override the renderer.

"""

def __str__(self):

return "Figure(%gx%g)" % tuple(self.bbox.size)

def __repr__(self):

return "<{clsname} size {h:g}x{w:g} with {naxes} Axes>".format(

clsname=self.__class__.__name__,

h=self.bbox.size[0], w=self.bbox.size[1],

naxes=len(self.axes),

)

def __init__(self,

figsize=None, # defaults to rc figure.figsize

dpi=None, # defaults to rc figure.dpi

facecolor=None, # defaults to rc figure.facecolor

edgecolor=None, # defaults to rc figure.edgecolor

linewidth=0.0, # the default linewidth of the frame

frameon=None, # whether or not to draw the figure frame

subplotpars=None, # default to rc

tight_layout=None, # default to rc figure.autolayout

constrained_layout=None, # default to rc

#figure.constrained_layout.use

):

"""

Parameters

----------

figsize : 2-tuple of floats

``(width, height)`` tuple in inches

dpi : float

Dots per inch

facecolor

The figure patch facecolor; defaults to rc ``figure.facecolor``

edgecolor

The figure patch edge color; defaults to rc ``figure.edgecolor``

linewidth : float

The figure patch edge linewidth; the default linewidth of the frame

frameon : bool

If ``False``, suppress drawing the figure frame

subplotpars : :class:`SubplotParams`

Subplot parameters, defaults to rc

tight_layout : bool

If ``False`` use *subplotpars*; if ``True`` adjust subplot

parameters using `.tight_layout` with default padding.

When providing a dict containing the keys

``pad``, ``w_pad``, ``h_pad``, and ``rect``, the default

`.tight_layout` paddings will be overridden.

Defaults to rc ``figure.autolayout``.

constrained_layout : bool

If ``True`` use constrained layout to adjust positioning of plot

elements. Like ``tight_layout``, but designed to be more

flexible. See

:doc:`/tutorials/intermediate/constrainedlayout_guide`

for examples. (Note: does not work with :meth:`.subplot` or

:meth:`.subplot2grid`.)

Defaults to rc ``figure.constrained_layout.use``.

"""

Artist.__init__(self)

# remove the non-figure artist _axes property

# as it makes no sense for a figure to be _in_ an axes

# this is used by the property methods in the artist base class

# which are over-ridden in this class

del self._axes

self.callbacks = cbook.CallbackRegistry()

if figsize is None:

figsize = rcParams['figure.figsize']

if dpi is None:

dpi = rcParams['figure.dpi']

if facecolor is None:

facecolor = rcParams['figure.facecolor']

if edgecolor is None:

edgecolor = rcParams['figure.edgecolor']

if frameon is None:

frameon = rcParams['figure.frameon']

if not np.isfinite(figsize).all():

raise ValueError('figure size must be finite not '

'{}'.format(figsize))

self.bbox_inches = Bbox.from_bounds(0, 0, *figsize)

self.dpi_scale_trans = Affine2D().scale(dpi, dpi)

# do not use property as it will trigger

self._dpi = dpi

self.bbox = TransformedBbox(self.bbox_inches, self.dpi_scale_trans)

self.frameon = frameon

self.transFigure = BboxTransformTo(self.bbox)

self.patch = Rectangle(

xy=(0, 0), width=1, height=1,

facecolor=facecolor, edgecolor=edgecolor, linewidth=linewidth)

self._set_artist_props(self.patch)

self.patch.set_aa(False)

self._hold = rcParams['axes.hold']

if self._hold is None:

self._hold = True

self.canvas = None

self._suptitle = None

if subplotpars is None:

subplotpars = SubplotParams()

self.subplotpars = subplotpars

# constrained_layout:

self._layoutbox = None

# set in set_constrained_layout_pads()

self.set_constrained_layout(constrained_layout)

self.set_tight_layout(tight_layout)

self._axstack = AxesStack() # track all figure axes and current axes

self.clf()

self._cachedRenderer = None

# groupers to keep track of x and y labels we want to align.

# see self.align_xlabels and self.align_ylabels and

# axis._get_tick_boxes_siblings

self._align_xlabel_grp = cbook.Grouper()

self._align_ylabel_grp = cbook.Grouper()

@property

@cbook.deprecated("2.1", alternative="Figure.patch")

def figurePatch(self):

return self.patch

# TODO: I'd like to dynamically add the _repr_html_ method

# to the figure in the right context, but then IPython doesn't

# use it, for some reason.

def _repr_html_(self):

# We can't use "isinstance" here, because then we'd end up importing

# webagg unconditiionally.

if (self.canvas is not None and

'WebAgg' in self.canvas.__class__.__name__):

from matplotlib.backends import backend_webagg

return backend_webagg.ipython_inline_display(self)

<div class="viewcode-block" id="Figure.show"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.show">[docs]</a> def show(self, warn=True):

"""

If using a GUI backend with pyplot, display the figure window.

If the figure was not created using

:func:`~matplotlib.pyplot.figure`, it will lack a

:class:`~matplotlib.backend_bases.FigureManagerBase`, and

will raise an AttributeError.

Parameters

----------

warm : bool

If ``True``, issue warning when called on a non-GUI backend

Notes

-----

For non-GUI backends, this does nothing, in which case a warning will

be issued if *warn* is ``True`` (default).

"""

try:

manager = getattr(self.canvas, 'manager')

except AttributeError as err:

raise AttributeError("%s\n"

"Figure.show works only "

"for figures managed by pyplot, normally "

"created by pyplot.figure()." % err)

if manager is not None:

try:

manager.show()

return

except NonGuiException:

pass

if warn:

import warnings

warnings.warn(

"matplotlib is currently using a non-GUI backend, "

"so cannot show the figure")</div>

def _get_axes(self):

return self._axstack.as_list()

axes = property(fget=_get_axes, doc="Read-only: list of axes in Figure")

def _get_dpi(self):

return self._dpi

def _set_dpi(self, dpi, forward=True):

"""

Parameters

----------

dpi : float

forward : bool

Passed on to `~.Figure.set_size_inches`

"""

self._dpi = dpi

self.dpi_scale_trans.clear().scale(dpi, dpi)

w, h = self.get_size_inches()

self.set_size_inches(w, h, forward=forward)

self.callbacks.process('dpi_changed', self)

dpi = property(_get_dpi, _set_dpi)

<div class="viewcode-block" id="Figure.get_tight_layout"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.get_tight_layout">[docs]</a> def get_tight_layout(self):

"""

Return whether and how `.tight_layout` is called when drawing.

"""

return self._tight</div>

<div class="viewcode-block" id="Figure.set_tight_layout"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.set_tight_layout">[docs]</a> def set_tight_layout(self, tight):

"""

Set whether and how `.tight_layout` is called when drawing.

Parameters

----------

tight : bool or dict with keys "pad", "w_pad", "h_pad", "rect" or None

If a bool, sets whether to call `.tight_layout` upon drawing.

If ``None``, use the ``figure.autolayout`` rcparam instead.

If a dict, pass it as kwargs to `.tight_layout`, overriding the

default paddings.

..

ACCEPTS: [ bool

| dict with keys "pad", "w_pad", "h_pad", "rect"

| None ]

"""

if tight is None:

tight = rcParams['figure.autolayout']

self._tight = bool(tight)

self._tight_parameters = tight if isinstance(tight, dict) else {}

self.stale = True</div>

<div class="viewcode-block" id="Figure.get_constrained_layout"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.get_constrained_layout">[docs]</a> def get_constrained_layout(self):

"""

Return a boolean: True means constrained layout is being used.

See :doc:`/tutorials/intermediate/constrainedlayout_guide`

"""

return self._constrained</div>

<div class="viewcode-block" id="Figure.set_constrained_layout"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.set_constrained_layout">[docs]</a> def set_constrained_layout(self, constrained):

"""

Set whether ``constrained_layout`` is used upon drawing. If None,

the rcParams['figure.constrained_layout.use'] value will be used.

When providing a dict containing the keys `w_pad`, `h_pad`

the default ``constrained_layout`` paddings will be

overridden. These pads are in inches and default to 3.0/72.0.

``w_pad`` is the width padding and ``h_pad`` is the height padding.

ACCEPTS: [True | False | dict | None ]

See :doc:`/tutorials/intermediate/constrainedlayout_guide`

"""

self._constrained_layout_pads = dict()

self._constrained_layout_pads['w_pad'] = None

self._constrained_layout_pads['h_pad'] = None

self._constrained_layout_pads['wspace'] = None

self._constrained_layout_pads['hspace'] = None

if constrained is None:

constrained = rcParams['figure.constrained_layout.use']

self._constrained = bool(constrained)

if isinstance(constrained, dict):

self.set_constrained_layout_pads(**constrained)

else:

self.set_constrained_layout_pads()

self.stale = True</div>

<div class="viewcode-block" id="Figure.set_constrained_layout_pads"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.set_constrained_layout_pads">[docs]</a> def set_constrained_layout_pads(self, **kwargs):

"""

Set padding for ``constrained_layout``. Note the kwargs can be passed

as a dictionary ``fig.set_constrained_layout(**paddict)``.

See :doc:`/tutorials/intermediate/constrainedlayout_guide`

Parameters

----------

w_pad : scalar

Width padding in inches. This is the pad around axes

and is meant to make sure there is enough room for fonts to

look good. Defaults to 3 pts = 0.04167 inches

h_pad : scalar

Height padding in inches. Defaults to 3 pts.

wspace: scalar

Width padding between subplots, expressed as a fraction of the

subplot width. The total padding ends up being w_pad + wspace.

hspace: scalar

Height padding between subplots, expressed as a fraction of the

subplot width. The total padding ends up being h_pad + hspace.

"""

todo = ['w_pad', 'h_pad', 'wspace', 'hspace']

for td in todo:

if td in kwargs and kwargs[td] is not None:

self._constrained_layout_pads[td] = kwargs[td]

else:

rcParams['figure.constrained_layout.' + td])</div>

<div class="viewcode-block" id="Figure.get_constrained_layout_pads"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.get_constrained_layout_pads">[docs]</a> def get_constrained_layout_pads(self, relative=False):

"""

Get padding for ``constrained_layout``.

Returns a list of `w_pad, h_pad` in inches and

`wspace` and `hspace` as fractions of the subplot.

See :doc:`/tutorials/intermediate/constrainedlayout_guide`

Parameters

----------

relative : boolean

If `True`, then convert from inches to figure relative.

"""

w_pad = self._constrained_layout_pads['w_pad']

h_pad = self._constrained_layout_pads['h_pad']

wspace = self._constrained_layout_pads['wspace']

hspace = self._constrained_layout_pads['hspace']

if relative and ((w_pad is not None) or (h_pad is not None)):

renderer0 = layoutbox.get_renderer(self)

dpi = renderer0.dpi

w_pad = w_pad * dpi / renderer0.width

h_pad = h_pad * dpi / renderer0.height

return w_pad, h_pad, wspace, hspace</div>

<div class="viewcode-block" id="Figure.autofmt_xdate"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.autofmt_xdate">[docs]</a> def autofmt_xdate(self, bottom=0.2, rotation=30, ha='right', which=None):

"""

Date ticklabels often overlap, so it is useful to rotate them

and right align them. Also, a common use case is a number of

subplots with shared xaxes where the x-axis is date data. The

ticklabels are often long, and it helps to rotate them on the

bottom subplot and turn them off on other subplots, as well as

turn off xlabels.

Parameters

----------

bottom : scalar

The bottom of the subplots for :meth:`subplots_adjust`

rotation : angle in degrees

The rotation of the xtick labels

ha : string

The horizontal alignment of the xticklabels

which : {None, 'major', 'minor', 'both'}

Selects which ticklabels to rotate (default is None which works

same as major)

"""

allsubplots = all(hasattr(ax, 'is_last_row') for ax in self.axes)

if len(self.axes) == 1:

for label in self.axes[0].get_xticklabels(which=which):

label.set_ha(ha)

label.set_rotation(rotation)

else:

if allsubplots:

for ax in self.get_axes():

if ax.is_last_row():

for label in ax.get_xticklabels(which=which):

label.set_ha(ha)

label.set_rotation(rotation)

else:

label.set_visible(False)

ax.set_xlabel('')

if allsubplots:

self.subplots_adjust(bottom=bottom)

self.stale = True</div>

<div class="viewcode-block" id="Figure.get_children"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.get_children">[docs]</a> def get_children(self):

"""Get a list of artists contained in the figure."""

children = [self.patch]

children.extend(self.artists)

return children</div>

<div class="viewcode-block" id="Figure.contains"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.contains">[docs]</a> def contains(self, mouseevent):

"""

Test whether the mouse event occurred on the figure.

Returns True, {}.

"""

if callable(self._contains):

return self._contains(self, mouseevent)

inside = self.bbox.contains(mouseevent.x, mouseevent.y)

return inside, {}</div>

<div class="viewcode-block" id="Figure.get_window_extent"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.get_window_extent">[docs]</a> def get_window_extent(self, *args, **kwargs):

"""

Return figure bounding box in display space; arguments are ignored.

"""

return self.bbox</div>

<div class="viewcode-block" id="Figure.suptitle"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.suptitle">[docs]</a> def suptitle(self, t, **kwargs):

"""

Add a centered title to the figure.

kwargs are :class:`matplotlib.text.Text` properties. Using figure

coordinates, the defaults are:

x : 0.5

The x location of the text in figure coords

y : 0.98

The y location of the text in figure coords

horizontalalignment : 'center'

The horizontal alignment of the text

verticalalignment : 'top'

The vertical alignment of the text

If the `fontproperties` keyword argument is given then the

rcParams defaults for `fontsize` (`figure.titlesize`) and

`fontweight` (`figure.titleweight`) will be ignored in favour

of the `FontProperties` defaults.

A :class:`matplotlib.text.Text` instance is returned.

Example::

fig.suptitle('this is the figure title', fontsize=12)

"""

x = kwargs.pop('x', 0.5)

y = kwargs.pop('y', 0.98)

if ('horizontalalignment' not in kwargs) and ('ha' not in kwargs):

kwargs['horizontalalignment'] = 'center'

if ('verticalalignment' not in kwargs) and ('va' not in kwargs):

kwargs['verticalalignment'] = 'top'

if 'fontproperties' not in kwargs:

if 'fontsize' not in kwargs and 'size' not in kwargs:

kwargs['size'] = rcParams['figure.titlesize']

if 'fontweight' not in kwargs and 'weight' not in kwargs:

kwargs['weight'] = rcParams['figure.titleweight']

sup = self.text(x, y, t, **kwargs)

if self._suptitle is not None:

self._suptitle.set_text(t)

self._suptitle.set_position((x, y))

self._suptitle.update_from(sup)

sup.remove()

else:

self._suptitle = sup

if self._layoutbox is not None:

# assign a layout box to the suptitle...

figlb = self._layoutbox

self._suptitle._layoutbox = layoutbox.LayoutBox(

parent=figlb,

name=figlb.name+'.suptitle')

for child in figlb.children:

if not (child == self._suptitle._layoutbox):

w_pad, h_pad, wspace, hspace = \

self.get_constrained_layout_pads(

relative=True)

layoutbox.vstack([self._suptitle._layoutbox, child],

padding=h_pad*2., strength='required')

self.stale = True

return self._suptitle</div>

<div class="viewcode-block" id="Figure.set_canvas"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.set_canvas">[docs]</a> def set_canvas(self, canvas):

"""

Set the canvas that contains the figure

ACCEPTS: a FigureCanvas instance

"""

self.canvas = canvas</div>

<div class="viewcode-block" id="Figure.hold"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.hold">[docs]</a> @cbook.deprecated("2.0")

def hold(self, b=None):

"""

Set the hold state. If hold is None (default), toggle the

hold state. Else set the hold state to boolean value b.

e.g.::

hold() # toggle hold

hold(True) # hold is on

hold(False) # hold is off

All "hold" machinery is deprecated.

"""

if b is None:

self._hold = not self._hold

else:

self._hold = b</div>

<div class="viewcode-block" id="Figure.figimage"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.figimage">[docs]</a> def figimage(self, X,

xo=0,

yo=0,

alpha=None,

norm=None,

cmap=None,

vmin=None,

vmax=None,

origin=None,

resize=False,

**kwargs):

"""

Adds a non-resampled image to the figure.

call signatures::

figimage(X, **kwargs)

adds a non-resampled array *X* to the figure.

::

figimage(X, xo, yo)

with pixel offsets *xo*, *yo*,

*X* must be a float array:

* If *X* is MxN, assume luminance (grayscale)

* If *X* is MxNx3, assume RGB

* If *X* is MxNx4, assume RGBA

Optional keyword arguments:

========= =========================================================

Keyword Description

========= =========================================================

resize a boolean, True or False. If "True", then re-size the

Figure to match the given image size.

xo or yo An integer, the *x* and *y* image offset in pixels

cmap a :class:`matplotlib.colors.Colormap` instance, e.g.,

cm.jet. If *None*, default to the rc ``image.cmap``

value

norm a :class:`matplotlib.colors.Normalize` instance. The

default is normalization(). This scales luminance -> 0-1

vmin|vmax are used to scale a luminance image to 0-1. If either

is *None*, the min and max of the luminance values will

be used. Note if you pass a norm instance, the settings

for *vmin* and *vmax* will be ignored.

alpha the alpha blending value, default is *None*

origin [ 'upper' | 'lower' ] Indicates where the [0,0] index of

the array is in the upper left or lower left corner of

the axes. Defaults to the rc image.origin value

========= =========================================================

figimage complements the axes image

(:meth:`~matplotlib.axes.Axes.imshow`) which will be resampled

to fit the current axes. If you want a resampled image to

fill the entire figure, you can define an

:class:`~matplotlib.axes.Axes` with extent [0,0,1,1].

An :class:`matplotlib.image.FigureImage` instance is returned.

Additional kwargs are Artist kwargs passed on to

:class:`~matplotlib.image.FigureImage`

"""

if not self._hold:

self.clf()

if resize:

dpi = self.get_dpi()

figsize = [x / dpi for x in (X.shape[1], X.shape[0])]

self.set_size_inches(figsize, forward=True)

im = FigureImage(self, cmap, norm, xo, yo, origin, **kwargs)

im.stale_callback = _stale_figure_callback

im.set_array(X)

im.set_alpha(alpha)

if norm is None:

im.set_clim(vmin, vmax)

self.images.append(im)

im._remove_method = lambda h: self.images.remove(h)

self.stale = True

return im</div>

<div class="viewcode-block" id="Figure.set_size_inches"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.set_size_inches">[docs]</a> def set_size_inches(self, w, h=None, forward=True):

"""Set the figure size in inches (1in == 2.54cm)

Usage ::

fig.set_size_inches(w, h) # OR

fig.set_size_inches((w, h))

optional kwarg *forward=True* will cause the canvas size to be

automatically updated; e.g., you can resize the figure window

from the shell

ACCEPTS: a w, h tuple with w, h in inches

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