matplotlib.figure
#
matplotlib.figure
implements the following classes:
Figure
Top level
Artist
, which holds all plot elements.Many methods are implemented inFigureBase
.SubFigure
A logical figure inside a figure, usually added to a figure (or parent
SubFigure
)withFigure.add_subfigure
orFigure.subfigures
methods.
Figures are typically created using pyplot methodsfigure
,subplots
, andsubplot_mosaic
.
fig,ax=plt.subplots(figsize=(2,2),facecolor='lightskyblue',layout='constrained')fig.suptitle('Figure')ax.set_title('Axes',loc='left',fontstyle='oblique',fontsize='medium')

Some situations call for directly instantiating aFigure
class,usually inside an application of some sort (seeEmbedding Matplotlib in graphical user interfaces for alist of examples) . More information about Figures can be found atIntroduction to Figures.
Figure#
Figure class#
The top level container for all the plot elements. |
Adding Axes and SubFigures#
Add an | |
Add an | |
Add a set of subplots to this figure. | |
Build a layout of Axes based on ASCII art or nested lists. | |
Low-level API for creating a | |
List of Axes in the Figure. | |
List of Axes in the Figure. | |
Remove the | |
Add a set of subfigures to this figure or subfigure. | |
Add a |
Saving#
Save the current figure as an image or vector graphic to a file. |
Annotating#
Add a colorbar to a plot. | |
Place a legend on the figure. | |
Add text to figure. | |
Add a centered super title to the figure. | |
Return the suptitle as string or an empty string if not set. | |
Add a centered super xlabel to the figure. | |
Return the supxlabel as string or an empty string if not set. | |
Add a centered super ylabel to the figure. | |
Return the supylabel as string or an empty string if not set. | |
Align the xlabels and ylabels of subplots with the same subplots row or column (respectively) if label alignment is being done automatically (i.e. the label position is not manually set). | |
Align the xlabels of subplots in the same subplot row if label alignment is being done automatically (i.e. the label position is not manually set). | |
Align the ylabels of subplots in the same subplot column if label alignment is being done automatically (i.e. the label position is not manually set). | |
Align the titles of subplots in the same subplot row if title alignment is being done automatically (i.e. the title position is not manually set). | |
Date ticklabels often overlap, so it is useful to rotate them and right align them. |
Figure geometry#
Set the figure size in inches. | |
Return the current size of the figure in inches. | |
Set the height of the figure in inches. | |
Return the figure height in inches. | |
Set the width of the figure in inches. | |
Return the figure width in inches. | |
The resolution in dots per inch. | |
Set the resolution of the figure in dots-per-inch. | |
Return the resolution in dots per inch as a float. |
Subplot layout#
Adjust the subplot layout parameters. | |
Set the layout engine for this figure. | |
Discouraged or deprecated#
Adjust the padding between and around subplots. | |
[Deprecated] Set whether and how | |
Return whether | |
[Deprecated] Set whether | |
Return whether constrained layout is being used. | |
[Deprecated] Set padding for | |
[Deprecated] Get padding for |
Interactive#
See also
Blocking call to interact with a figure. | |
Whenever the Axes state change, | |
Blocking call to interact with the figure. | |
Process a pick event. |
Modifying appearance#
Set the figure's background patch visibility, i.e. whether the figure background will be drawn. | |
Return the figure's background patch visibility, i.e. whether the figure background will be drawn. | |
Set the line width of the Figure rectangle. | |
Get the line width of the Figure rectangle. | |
Set the face color of the Figure rectangle. | |
Get the face color of the Figure rectangle. | |
Set the edge color of the Figure rectangle. | |
Get the edge color of the Figure rectangle. |
Adding and getting Artists#
Add an | |
Get a list of artists contained in the figure. | |
Add a non-resampled image to the figure. |
Getting and modifying state#
See also
Clear the figure. | |
Get the current Axes. | |
Set the current Axes to bea and returna. | |
Return a (tight) bounding box of the figurein inches. | |
Get the artist's bounding box in display space. | |
If using a GUI backend with pyplot, display the figure window. | |
Set the canvas that contains the figure | |
Draw the Artist (and its children) using the given renderer. | |
Draw the figure with no output. | |
Draw |
SubFigure#
Matplotlib has the concept of aSubFigure
, which is a logical figure insidea parentFigure
. It has many of the same methods as the parent. SeeNested Axes layouts.

SubFigure class#
Logical figure that can be placed inside a figure. |
Adding Axes and SubFigures#
Add an | |
Add an | |
Add a set of subplots to this figure. | |
Build a layout of Axes based on ASCII art or nested lists. | |
Low-level API for creating a | |
Remove the | |
Add a | |
Add a set of subfigures to this figure or subfigure. |
Annotating#
Add a colorbar to a plot. | |
Place a legend on the figure. | |
Add text to figure. | |
Add a centered super title to the figure. | |
Return the suptitle as string or an empty string if not set. | |
Add a centered super xlabel to the figure. | |
Return the supxlabel as string or an empty string if not set. | |
Add a centered super ylabel to the figure. | |
Return the supylabel as string or an empty string if not set. | |
Align the xlabels and ylabels of subplots with the same subplots row or column (respectively) if label alignment is being done automatically (i.e. the label position is not manually set). | |
Align the xlabels of subplots in the same subplot row if label alignment is being done automatically (i.e. the label position is not manually set). | |
Align the ylabels of subplots in the same subplot column if label alignment is being done automatically (i.e. the label position is not manually set). | |
Align the titles of subplots in the same subplot row if title alignment is being done automatically (i.e. the title position is not manually set). |
Adding and getting Artists#
Add an | |
Get a list of artists contained in the figure. |
Modifying appearance#
Set the figure's background patch visibility, i.e. whether the figure background will be drawn. | |
Return the figure's background patch visibility, i.e. whether the figure background will be drawn. | |
Set the line width of the Figure rectangle. | |
Get the line width of the Figure rectangle. | |
Set the face color of the Figure rectangle. | |
Get the face color of the Figure rectangle. | |
Set the edge color of the Figure rectangle. | |
Get the edge color of the Figure rectangle. |
Passthroughs#
Set the resolution of parent figure in dots-per-inch. | |
Return the resolution of the parent figure in dots-per-inch as a float. |
FigureBase parent class#
- classmatplotlib.figure.FigureBase(**kwargs)[source]#
Base class for
Figure
andSubFigure
containing the methods that addartists to the figure or subfigure, create Axes, etc.- add_artist(artist,clip=False)[source]#
Add an
Artist
to the figure.Usually artists are added to
Axes
objects usingAxes.add_artist
; this method can be used in the rare cases whereone needs to add artists directly to the figure instead.
- add_axes(*args,**kwargs)[source]#
Add an
Axes
to the figure.Call signatures:
add_axes(rect,projection=None,polar=False,**kwargs)add_axes(ax)
- Parameters:
- recttuple (left, bottom, width, height)
The dimensions (left, bottom, width, height) of the new
Axes
. All quantities are in fractions of figure width andheight.- projection{None, 'aitoff', 'hammer', 'lambert', 'mollweide', 'polar', 'rectilinear', str}, optional
The projection type of the
Axes
.str is the name ofa custom projection, seeprojections
. The defaultNone results in a 'rectilinear' projection.- polarbool, default: False
If True, equivalent to projection='polar'.
- axes_classsubclass type of
Axes
, optional The
axes.Axes
subclass that is instantiated. This parameteris incompatible withprojection andpolar. Seeaxisartist for examples.- sharex, sharey
Axes
, optional Share the x or y
axis
with sharex and/or sharey.The axis will have the same limits, ticks, and scale as the axisof the shared Axes.- labelstr
A label for the returned Axes.
- Returns:
Axes
, or a subclass ofAxes
The returned Axes class depends on the projection used. It is
Axes
if rectilinear projection is used andprojections.polar.PolarAxes
if polar projection is used.
- Other Parameters:
- **kwargs
This method also takes the keyword arguments forthe returned Axes class. The keyword arguments for therectilinear Axes class
Axes
can be found inthe following table but there might also be other keywordarguments if another projection is used, see the actual Axesclass.Property
Description
{'box', 'datalim'}
a filter function, which takes a (m, n, 3) float array and a dpi value, and returns a (m, n, 3) array and two offsets from the bottom left corner of the image
float or None
(float, float) or {'C', 'SW', 'S', 'SE', 'E', 'NE', ...}
bool
{'auto', 'equal'} or float
bool
unknown
unknown
Callable[[Axes, Renderer], Bbox]
bool or 'line'
float or None
BboxBase
or Nonebool
Patch or (Path, Transform) or None
bool or "auto"
bool
str
bool
object
bool
bool
unknown
list of
AbstractPathEffect
None or bool or float or callable
[left, bottom, width, height] or
Bbox
float or None
bool
(scale: float, length: float, randomness: float)
bool or None
unknown
str
str
bool
(lower: float, upper: float)
unknown
str
(left: float, right: float)
float greater than -0.5
unknown
unknown
unknown
(lower: float, upper: float)
unknown
str
(bottom: float, top: float)
float greater than -0.5
unknown
unknown
unknown
float
Notes
In rare circumstances,
add_axes
may be called with a singleargument, an Axes instance already created in the present figure butnot in the figure's list of Axes.Examples
Some simple examples:
rect=l,b,w,hfig=plt.figure()fig.add_axes(rect)fig.add_axes(rect,frameon=False,facecolor='g')fig.add_axes(rect,polar=True)ax=fig.add_axes(rect,projection='polar')fig.delaxes(ax)fig.add_axes(ax)
- add_gridspec(nrows=1,ncols=1,**kwargs)[source]#
Low-level API for creating a
GridSpec
that has this figure as a parent.This is a low-level API, allowing you to create a gridspec andsubsequently add subplots based on the gridspec. Most users donot need that freedom and should use the higher-level methods
subplots
orsubplot_mosaic
.- Parameters:
- nrowsint, default: 1
Number of rows in grid.
- ncolsint, default: 1
Number of columns in grid.
- Returns:
- Other Parameters:
- **kwargs
Keyword arguments are passed to
GridSpec
.
See also
Examples
Adding a subplot that spans two rows:
fig=plt.figure()gs=fig.add_gridspec(2,2)ax1=fig.add_subplot(gs[0,0])ax2=fig.add_subplot(gs[1,0])# spans two rows:ax3=fig.add_subplot(gs[:,1])
- add_subfigure(subplotspec,**kwargs)[source]#
Add a
SubFigure
to the figure as part of a subplot arrangement.- Parameters:
- subplotspec
gridspec.SubplotSpec
Defines the region in a parent gridspec where the subfigure willbe placed.
- subplotspec
- Returns:
- Other Parameters:
- **kwargs
Are passed to the
SubFigure
object.
See also
- add_subplot(*args,**kwargs)[source]#
Add an
Axes
to the figure as part of a subplot arrangement.Call signatures:
add_subplot(nrows,ncols,index,**kwargs)add_subplot(pos,**kwargs)add_subplot(ax)add_subplot()
- Parameters:
- *argsint, (int, int,index), or
SubplotSpec
, default: (1, 1, 1) The position of the subplot described by one of
Three integers (nrows,ncols,index). The subplot willtake theindex position on a grid withnrows rows andncols columns.index starts at 1 in the upper left cornerand increases to the right.index can also be a two-tuplespecifying the (first,last) indices (1-based, and includinglast) of the subplot, e.g.,
fig.add_subplot(3,1,(1,2))
makes a subplot that spans the upper 2/3 of the figure.A 3-digit integer. The digits are interpreted as if givenseparately as three single-digit integers, i.e.
fig.add_subplot(235)
is the same asfig.add_subplot(2,3,5)
. Note that this can only be usedif there are no more than 9 subplots.
In rare circumstances,
add_subplot
may be called with a singleargument, a subplot Axes instance already created in thepresent figure but not in the figure's list of Axes.- projection{None, 'aitoff', 'hammer', 'lambert', 'mollweide', 'polar', 'rectilinear', str}, optional
The projection type of the subplot (
Axes
).str is thename of a custom projection, seeprojections
. Thedefault None results in a 'rectilinear' projection.- polarbool, default: False
If True, equivalent to projection='polar'.
- axes_classsubclass type of
Axes
, optional The
axes.Axes
subclass that is instantiated. This parameteris incompatible withprojection andpolar. Seeaxisartist for examples.- sharex, sharey
Axes
, optional Share the x or y
axis
with sharex and/or sharey.The axis will have the same limits, ticks, and scale as the axisof the shared Axes.- labelstr
A label for the returned Axes.
- *argsint, (int, int,index), or
- Returns:
Axes
The Axes of the subplot. The returned Axes can actually be aninstance of a subclass, such as
projections.polar.PolarAxes
forpolar projections.
- Other Parameters:
- **kwargs
This method also takes the keyword arguments for the returned Axesbase class; except for thefigure argument. The keyword argumentsfor the rectilinear base class
Axes
can be found inthe following table but there might also be other keywordarguments if another projection is used.Property
Description
{'box', 'datalim'}
a filter function, which takes a (m, n, 3) float array and a dpi value, and returns a (m, n, 3) array and two offsets from the bottom left corner of the image
float or None
(float, float) or {'C', 'SW', 'S', 'SE', 'E', 'NE', ...}
bool
{'auto', 'equal'} or float
bool
unknown
unknown
Callable[[Axes, Renderer], Bbox]
bool or 'line'
float or None
BboxBase
or Nonebool
Patch or (Path, Transform) or None
bool or "auto"
bool
str
bool
object
bool
bool
unknown
list of
AbstractPathEffect
None or bool or float or callable
[left, bottom, width, height] or
Bbox
float or None
bool
(scale: float, length: float, randomness: float)
bool or None
unknown
str
str
bool
(lower: float, upper: float)
unknown
str
(left: float, right: float)
float greater than -0.5
unknown
unknown
unknown
(lower: float, upper: float)
unknown
str
(bottom: float, top: float)
float greater than -0.5
unknown
unknown
unknown
float
Examples
fig=plt.figure()fig.add_subplot(231)ax1=fig.add_subplot(2,3,1)# equivalent but more generalfig.add_subplot(232,frameon=False)# subplot with no framefig.add_subplot(233,projection='polar')# polar subplotfig.add_subplot(234,sharex=ax1)# subplot sharing x-axis with ax1fig.add_subplot(235,facecolor="red")# red subplotax1.remove()# delete ax1 from the figurefig.add_subplot(ax1)# add ax1 back to the figure
- align_labels(axs=None)[source]#
Align the xlabels and ylabels of subplots with the same subplotsrow or column (respectively) if label alignment is beingdone automatically (i.e. the label position is not manually set).
Alignment persists for draw events after this is called.
- Parameters:
See also
Notes
This assumes that all Axes in
axs
are from the sameGridSpec
,so that theirSubplotSpec
positions correspond to figure positions.
- align_titles(axs=None)[source]#
Align the titles of subplots in the same subplot row if titlealignment is being done automatically (i.e. the title position isnot manually set).
Alignment persists for draw events after this is called.
- Parameters:
See also
Notes
This assumes that all Axes in
axs
are from the sameGridSpec
,so that theirSubplotSpec
positions correspond to figure positions.Examples
Example with titles:
fig,axs=plt.subplots(1,2)axs[0].set_aspect('equal')axs[0].set_title('Title 0')axs[1].set_title('Title 1')fig.align_titles()
- align_xlabels(axs=None)[source]#
Align the xlabels of subplots in the same subplot row if labelalignment is being done automatically (i.e. the label position isnot manually set).
Alignment persists for draw events after this is called.
If a label is on the bottom, it is aligned with labels on Axes thatalso have their label on the bottom and that have the samebottom-most subplot row. If the label is on the top,it is aligned with labels on Axes with the same top-most row.
- Parameters:
See also
Notes
This assumes that all Axes in
axs
are from the sameGridSpec
,so that theirSubplotSpec
positions correspond to figure positions.Examples
Example with rotated xtick labels:
fig,axs=plt.subplots(1,2)axs[0].tick_params(axis='x',rotation=55)axs[0].set_xlabel('XLabel 0')axs[1].set_xlabel('XLabel 1')fig.align_xlabels()
- align_ylabels(axs=None)[source]#
Align the ylabels of subplots in the same subplot column if labelalignment is being done automatically (i.e. the label position isnot manually set).
Alignment persists for draw events after this is called.
If a label is on the left, it is aligned with labels on Axes thatalso have their label on the left and that have the sameleft-most subplot column. If the label is on the right,it is aligned with labels on Axes with the same right-most column.
- Parameters:
See also
Notes
This assumes that all Axes in
axs
are from the sameGridSpec
,so that theirSubplotSpec
positions correspond to figure positions.Examples
Example with large yticks labels:
fig,axs=plt.subplots(2,1)axs[0].plot(np.arange(0,1000,50))axs[0].set_ylabel('YLabel 0')axs[1].set_ylabel('YLabel 1')fig.align_ylabels()
- autofmt_xdate(bottom=0.2,rotation=30,ha='right',which='major')[source]#
Date ticklabels often overlap, so it is useful to rotate themand right align them. Also, a common use case is a number ofsubplots with shared x-axis where the x-axis is date data. Theticklabels are often long, and it helps to rotate them on thebottom subplot and turn them off on other subplots, as well asturn off xlabels.
- Parameters:
- bottomfloat, default: 0.2
The bottom of the subplots for
subplots_adjust
.- rotationfloat, default: 30 degrees
The rotation angle of the xtick labels in degrees.
- ha{'left', 'center', 'right'}, default: 'right'
The horizontal alignment of the xticklabels.
- which{'major', 'minor', 'both'}, default: 'major'
Selects which ticklabels to rotate.
- clear(keep_observers=False)[source]#
Clear the figure.
- Parameters:
- keep_observersbool, default: False
Setkeep_observers to True if, for example,a gui widget is tracking the Axes in the figure.
- clf(keep_observers=False)[source]#
[Discouraged] Alias for the
clear()
method.Discouraged
The use of
clf()
is discouraged. Useclear()
instead.- Parameters:
- keep_observersbool, default: False
Setkeep_observers to True if, for example,a gui widget is tracking the Axes in the figure.
- colorbar(mappable,cax=None,ax=None,use_gridspec=True,**kwargs)[source]#
Add a colorbar to a plot.
- Parameters:
- mappable
The
matplotlib.cm.ScalarMappable
(i.e.,AxesImage
,ContourSet
, etc.) described by this colorbar. This argument ismandatory for theFigure.colorbar
method but optional for thepyplot.colorbar
function, which sets the default to the currentimage.Note that one can create a
ScalarMappable
"on-the-fly" togenerate colorbars not attached to a previously drawn artist, e.g.fig.colorbar(cm.ScalarMappable(norm=norm,cmap=cmap),ax=ax)
- cax
Axes
, optional Axes into which the colorbar will be drawn. If
None
, then a newAxes is created and the space for it will be stolen from the Axes(s)specified inax.- ax
Axes
or iterable ornumpy.ndarray
of Axes, optional The one or more parent Axes from which space for a new colorbar Axeswill be stolen. This parameter is only used ifcax is not set.
Defaults to the Axes that contains the mappable used to create thecolorbar.
- use_gridspecbool, optional
Ifcax is
None
, a newcax is created as an instance ofAxes. Ifax is positioned with a subplotspec anduse_gridspecisTrue
, thencax is also positioned with a subplotspec.
- Returns:
- colorbar
Colorbar
- colorbar
- Other Parameters:
- locationNone or {'left', 'right', 'top', 'bottom'}
The location, relative to the parent Axes, where the colorbar Axesis created. It also determines theorientation of the colorbar(colorbars on the left and right are vertical, colorbars at the topand bottom are horizontal). If None, the location will come from theorientation if it is set (vertical colorbars on the right, horizontalones at the bottom), or default to 'right' iforientation is unset.
- orientationNone or {'vertical', 'horizontal'}
The orientation of the colorbar. It is preferable to set thelocationof the colorbar, as that also determines theorientation; passingincompatible values forlocation andorientation raises an exception.
- fractionfloat, default: 0.15
Fraction of original Axes to use for colorbar.
- shrinkfloat, default: 1.0
Fraction by which to multiply the size of the colorbar.
- aspectfloat, default: 20
Ratio of long to short dimensions.
- padfloat, default: 0.05 if vertical, 0.15 if horizontal
Fraction of original Axes between colorbar and new image Axes.
- anchor(float, float), optional
The anchor point of the colorbar Axes.Defaults to (0.0, 0.5) if vertical; (0.5, 1.0) if horizontal.
- panchor(float, float), orFalse, optional
The anchor point of the colorbar parent Axes. IfFalse, the parentaxes' anchor will be unchanged.Defaults to (1.0, 0.5) if vertical; (0.5, 0.0) if horizontal.
- extend{'neither', 'both', 'min', 'max'}
Make pointed end(s) for out-of-range values (unless 'neither'). These areset for a given colormap using the colormap set_under and set_over methods.
- extendfrac{None, 'auto', length, lengths}
If set toNone, both the minimum and maximum triangular colorbarextensions will have a length of 5% of the interior colorbar length (thisis the default setting).
If set to 'auto', makes the triangular colorbar extensions the same lengthsas the interior boxes (whenspacing is set to 'uniform') or the samelengths as the respective adjacent interior boxes (whenspacing is set to'proportional').
If a scalar, indicates the length of both the minimum and maximumtriangular colorbar extensions as a fraction of the interior colorbarlength. A two-element sequence of fractions may also be given, indicatingthe lengths of the minimum and maximum colorbar extensions respectively asa fraction of the interior colorbar length.
- extendrectbool
IfFalse the minimum and maximum colorbar extensions will be triangular(the default). IfTrue the extensions will be rectangular.
- ticksNone or list of ticks or Locator
If None, ticks are determined automatically from the input.
- formatNone or str or Formatter
If None,
ScalarFormatter
is used.Format strings, e.g.,"%4.2e"
or"{x:.2e}"
, are supported.An alternativeFormatter
may be given instead.- drawedgesbool
Whether to draw lines at color boundaries.
- labelstr
The label on the colorbar's long axis.
- boundaries, valuesNone or a sequence
If unset, the colormap will be displayed on a 0-1 scale.If sequences,values must have a length 1 less thanboundaries. Foreach region delimited by adjacent entries inboundaries, the color mappedto the corresponding value invalues will be used. The size of eachregion is determined by thespacing parameter.Normally only useful for indexed colors (i.e.
norm=NoNorm()
) or otherunusual circumstances.- spacing{'uniform', 'proportional'}
For discrete colorbars (
BoundaryNorm
or contours), 'uniform' gives eachcolor the same space; 'proportional' makes the space proportional to thedata interval.
Notes
Ifmappable is a
ContourSet
, itsextend kwarg isincluded automatically.Theshrink kwarg provides a simple way to scale the colorbar withrespect to the Axes. Note that ifcax is specified, it determines thesize of the colorbar, andshrink andaspect are ignored.
For more precise control, you can manually specify the positions of theaxes objects in which the mappable and the colorbar are drawn. In thiscase, do not use any of the Axes properties kwargs.
It is known that some vector graphics viewers (svg and pdf) renderwhite gaps between segments of the colorbar. This is due to bugs inthe viewers, not Matplotlib. As a workaround, the colorbar can berendered with overlapping segments:
cbar=colorbar()cbar.solids.set_edgecolor("face")draw()
However, this has negative consequences in other circumstances, e.g.with semi-transparent images (alpha < 1) and colorbar extensions;therefore, this workaround is not used by default (see issue #1188).
- draw(renderer)[source]#
Draw the Artist (and its children) using the given renderer.
This has no effect if the artist is not visible (
Artist.get_visible
returns False).- Parameters:
- renderer
RendererBase
subclass.
- renderer
Notes
This method is overridden in the Artist subclasses.
- propertyfigure#
The root
Figure
. To get the parent of aSubFigure
, use theget_figure
method.
- propertyframeon#
Return the figure's background patch visibility, i.e.whether the figure background will be drawn. Equivalent to
Figure.patch.get_visible()
.
- gca()[source]#
Get the current Axes.
If there is currently no Axes on this Figure, a new one is createdusing
Figure.add_subplot
. (To test whether there is currently anAxes on a Figure, check whetherfigure.axes
is empty. To testwhether there is currently a Figure on the pyplot figure stack, checkwhetherpyplot.get_fignums()
is empty.)
- get_default_bbox_extra_artists()[source]#
Return a list of Artists typically used in
Figure.get_tightbbox
.
- get_figure(root=None)[source]#
Return the
Figure
orSubFigure
instance the (Sub)Figure belongs to.- Parameters:
- rootbool, default=True
If False, return the (Sub)Figure this artist is on. If True,return the root Figure for a nested tree of SubFigures.
Deprecated since version 3.10:From version 3.12root will default to False.
- get_frameon()[source]#
Return the figure's background patch visibility, i.e.whether the figure background will be drawn. Equivalent to
Figure.patch.get_visible()
.
- get_tightbbox(renderer=None,*,bbox_extra_artists=None)[source]#
Return a (tight) bounding box of the figurein inches.
Note that
FigureBase
differs from all other artists, which returntheirBbox
in pixels.Artists that have
artist.set_in_layout(False)
are not includedin the bbox.- Parameters:
- renderer
RendererBase
subclass Renderer that will be used to draw the figures (i.e.
fig.canvas.get_renderer()
)- bbox_extra_artistslist of
Artist
orNone
List of artists to include in the tight bounding box. If
None
(default), then all artist children of each Axes areincluded in the tight bounding box.
- renderer
- Returns:
BboxBase
containing the bounding box (in figure inches).
- get_window_extent(renderer=None)[source]#
Get the artist's bounding box in display space.
The bounding box's width and height are non-negative.
Subclasses should override for inclusion in the bounding box"tight" calculation. Default is to return an empty boundingbox at 0, 0.
Warning
The extent can change due to any changes in the transform stack, suchas changing the Axes limits, the figure size, the canvas used (as isdone when saving a figure), or the DPI.
Relying on a once-retrieved window extent can lead to unexpectedbehavior in various cases such as interactive figures being resized ormoved to a screen with different dpi, or figures that look fine onscreen render incorrectly when saved to file.
To get accurate results you may need to manually call
matplotlib.figure.Figure.savefig
ormatplotlib.figure.Figure.draw_without_rendering
to have Matplotlibcompute the rendered size.
- legend(*args,**kwargs)[source]#
Place a legend on the figure.
Call signatures:
legend()legend(handles,labels)legend(handles=handles)legend(labels)
The call signatures correspond to the following different ways to usethis method:
1. Automatic detection of elements to be shown in the legend
The elements to be added to the legend are automatically determined,when you do not pass in any extra arguments.
In this case, the labels are taken from the artist. You can specifythem either at artist creation or by calling the
set_label()
method on the artist:ax.plot([1,2,3],label='Inline label')fig.legend()
or:
line,=ax.plot([1,2,3])line.set_label('Label via method')fig.legend()
Specific lines can be excluded from the automatic legend elementselection by defining a label starting with an underscore.This is default for all artists, so calling
Figure.legend
withoutany arguments and without setting the labels manually will result inno legend being drawn.2. Explicitly listing the artists and labels in the legend
For full control of which artists have a legend entry, it is possibleto pass an iterable of legend artists followed by an iterable oflegend labels respectively:
fig.legend([line1,line2,line3],['label1','label2','label3'])
3. Explicitly listing the artists in the legend
This is similar to 2, but the labels are taken from the artists'label properties. Example:
line1,=ax1.plot([1,2,3],label='label1')line2,=ax2.plot([1,2,3],label='label2')fig.legend(handles=[line1,line2])
4. Labeling existing plot elements
Discouraged
This call signature is discouraged, because the relation betweenplot elements and labels is only implicit by their order and caneasily be mixed up.
To make a legend for all artists on all Axes, call this function withan iterable of strings, one for each legend item. For example:
fig,(ax1,ax2)=plt.subplots(1,2)ax1.plot([1,3,5],color='blue')ax2.plot([2,4,6],color='red')fig.legend(['the blues','the reds'])
- Parameters:
- handleslist of
Artist
, optional A list of Artists (lines, patches) to be added to the legend.Use this together withlabels, if you need full control on whatis shown in the legend and the automatic mechanism described aboveis not sufficient.
The length of handles and labels should be the same in thiscase. If they are not, they are truncated to the smaller length.
- labelslist of str, optional
A list of labels to show next to the artists.Use this together withhandles, if you need full control on whatis shown in the legend and the automatic mechanism described aboveis not sufficient.
- handleslist of
- Returns:
- Other Parameters:
- locstr or pair of floats, default: 'upper right'
The location of the legend.
The strings
'upperleft'
,'upperright'
,'lowerleft'
,'lowerright'
place the legend at the corresponding corner of thefigure.The strings
'uppercenter'
,'lowercenter'
,'centerleft'
,'centerright'
place the legend at the center of the corresponding edgeof the figure.The string
'center'
places the legend at the center of the figure.The location can also be a 2-tuple giving the coordinates of the lower-leftcorner of the legend in figure coordinates (in which casebbox_to_anchorwill be ignored).
For back-compatibility,
'centerright'
(but no other location) can alsobe spelled'right'
, and each "string" location can also be given as anumeric value:Location String
Location Code
'best' (Axes only)
0
'upper right'
1
'upper left'
2
'lower left'
3
'lower right'
4
'right'
5
'center left'
6
'center right'
7
'lower center'
8
'upper center'
9
'center'
10
If a figure is using the constrained layout manager, the string codesof theloc keyword argument can get better layout behaviour using theprefix 'outside'. There is ambiguity at the corners, so 'outsideupper right' will make space for the legend above the rest of theaxes in the layout, and 'outside right upper' will make space on theright side of the layout. In addition to the values ofloclisted above, we have 'outside right upper', 'outside right lower','outside left upper', and 'outside left lower'. SeeLegend guide for more details.
- bbox_to_anchor
BboxBase
, 2-tuple, or 4-tuple of floats Box that is used to position the legend in conjunction withloc.Defaults to
axes.bbox
(if called as a method toAxes.legend
) orfigure.bbox
(iffigure.legend
). This argument allows arbitraryplacement of the legend.Bbox coordinates are interpreted in the coordinate system given bybbox_transform, with the default transformAxes or Figure coordinates, depending on which
legend
is called.If a 4-tuple or
BboxBase
is given, then it specifies the bbox(x,y,width,height)
that the legend is placed in.To put the legend in the best location in the bottom rightquadrant of the Axes (or figure):loc='best',bbox_to_anchor=(0.5,0.,0.5,0.5)
A 2-tuple
(x,y)
places the corner of the legend specified byloc atx, y. For example, to put the legend's upper right-hand corner in thecenter of the Axes (or figure) the following keywords can be used:loc='upper right',bbox_to_anchor=(0.5,0.5)
- ncolsint, default: 1
The number of columns that the legend has.
For backward compatibility, the spellingncol is also supportedbut it is discouraged. If both are given,ncols takes precedence.
- propNone or
FontProperties
or dict The font properties of the legend. If None (default), the current
matplotlib.rcParams
will be used.- fontsizeint or {'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', 'xx-large'}
The font size of the legend. If the value is numeric the size will be theabsolute font size in points. String values are relative to the currentdefault font size. This argument is only used ifprop is not specified.
- labelcolorstr or list, default:
rcParams["legend.labelcolor"]
(default:'None'
) The color of the text in the legend. Either a valid color string(for example, 'red'), or a list of color strings. The labelcolor canalso be made to match the color of the line or marker using 'linecolor','markerfacecolor' (or 'mfc'), or 'markeredgecolor' (or 'mec').
Labelcolor can be set globally using
rcParams["legend.labelcolor"]
(default:'None'
). If None,usercParams["text.color"]
(default:'black'
).- numpointsint, default:
rcParams["legend.numpoints"]
(default:1
) The number of marker points in the legend when creating a legendentry for a
Line2D
(line).- scatterpointsint, default:
rcParams["legend.scatterpoints"]
(default:1
) The number of marker points in the legend when creatinga legend entry for a
PathCollection
(scatter plot).- scatteryoffsetsiterable of floats, default:
[0.375,0.5,0.3125]
The vertical offset (relative to the font size) for the markerscreated for a scatter plot legend entry. 0.0 is at the base thelegend text, and 1.0 is at the top. To draw all markers at thesame height, set to
[0.5]
.- markerscalefloat, default:
rcParams["legend.markerscale"]
(default:1.0
) The relative size of legend markers compared to the originally drawn ones.
- markerfirstbool, default: True
IfTrue, legend marker is placed to the left of the legend label.IfFalse, legend marker is placed to the right of the legend label.
- reversebool, default: False
IfTrue, the legend labels are displayed in reverse order from the input.IfFalse, the legend labels are displayed in the same order as the input.
Added in version 3.7.
- frameonbool, default:
rcParams["legend.frameon"]
(default:True
) Whether the legend should be drawn on a patch (frame).
- fancyboxbool, default:
rcParams["legend.fancybox"]
(default:True
) Whether round edges should be enabled around the
FancyBboxPatch
whichmakes up the legend's background.- shadowNone, bool or dict, default:
rcParams["legend.shadow"]
(default:False
) Whether to draw a shadow behind the legend.The shadow can be configured using
Patch
keywords.Customization viarcParams["legend.shadow"]
(default:False
) is currently not supported.- framealphafloat, default:
rcParams["legend.framealpha"]
(default:0.8
) The alpha transparency of the legend's background.Ifshadow is activated andframealpha is
None
, the default value isignored.- facecolor"inherit" or color, default:
rcParams["legend.facecolor"]
(default:'inherit'
) The legend's background color.If
"inherit"
, usercParams["axes.facecolor"]
(default:'white'
).- edgecolor"inherit" or color, default:
rcParams["legend.edgecolor"]
(default:'0.8'
) The legend's background patch edge color.If
"inherit"
, usercParams["axes.edgecolor"]
(default:'black'
).- mode{"expand", None}
Ifmode is set to
"expand"
the legend will be horizontallyexpanded to fill the Axes area (orbbox_to_anchor if definesthe legend's size).- bbox_transformNone or
Transform
The transform for the bounding box (bbox_to_anchor). For a valueof
None
(default) the Axes'matplotlib.axes.Axes.transAxes
transform will be used.- titlestr or None
The legend's title. Default is no title (
None
).- title_fontpropertiesNone or
FontProperties
or dict The font properties of the legend's title. If None (default), thetitle_fontsize argument will be used if present; iftitle_fontsize isalso None, the current
rcParams["legend.title_fontsize"]
(default:None
) will be used.- title_fontsizeint or {'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', 'xx-large'}, default:
rcParams["legend.title_fontsize"]
(default:None
) The font size of the legend's title.Note: This cannot be combined withtitle_fontproperties. If you wantto set the fontsize alongside other font properties, use thesizeparameter intitle_fontproperties.
- alignment{'center', 'left', 'right'}, default: 'center'
The alignment of the legend title and the box of entries. The entriesare aligned as a single block, so that markers always lined up.
- borderpadfloat, default:
rcParams["legend.borderpad"]
(default:0.4
) The fractional whitespace inside the legend border, in font-size units.
- labelspacingfloat, default:
rcParams["legend.labelspacing"]
(default:0.5
) The vertical space between the legend entries, in font-size units.
- handlelengthfloat, default:
rcParams["legend.handlelength"]
(default:2.0
) The length of the legend handles, in font-size units.
- handleheightfloat, default:
rcParams["legend.handleheight"]
(default:0.7
) The height of the legend handles, in font-size units.
- handletextpadfloat, default:
rcParams["legend.handletextpad"]
(default:0.8
) The pad between the legend handle and text, in font-size units.
- borderaxespadfloat, default:
rcParams["legend.borderaxespad"]
(default:0.5
) The pad between the Axes and legend border, in font-size units.
- columnspacingfloat, default:
rcParams["legend.columnspacing"]
(default:2.0
) The spacing between columns, in font-size units.
- handler_mapdict or None
The custom dictionary mapping instances or types to a legendhandler. Thishandler_map updates the default handler mapfound at
matplotlib.legend.Legend.get_legend_handler_map
.- draggablebool, default: False
Whether the legend can be dragged with the mouse.
See also
Notes
Some artists are not supported by this function. SeeLegend guide for details.
- set(*,agg_filter=<UNSET>,alpha=<UNSET>,animated=<UNSET>,clip_box=<UNSET>,clip_on=<UNSET>,clip_path=<UNSET>,edgecolor=<UNSET>,facecolor=<UNSET>,frameon=<UNSET>,gid=<UNSET>,in_layout=<UNSET>,label=<UNSET>,linewidth=<UNSET>,mouseover=<UNSET>,path_effects=<UNSET>,picker=<UNSET>,rasterized=<UNSET>,sketch_params=<UNSET>,snap=<UNSET>,transform=<UNSET>,url=<UNSET>,visible=<UNSET>,zorder=<UNSET>)[source]#
Set multiple properties at once.
Supported properties are
Property
Description
a filter function, which takes a (m, n, 3) float array and a dpi value, and returns a (m, n, 3) array and two offsets from the bottom left corner of the image
float or None
bool
BboxBase
or Nonebool
Patch or (Path, Transform) or None
unknown
bool
str
bool
object
number
bool
list of
AbstractPathEffect
None or bool or float or callable
bool
(scale: float, length: float, randomness: float)
bool or None
str
bool
float
- set_figure(fig)[source]#
Deprecated since version 3.10:Currently this method will raise an exception iffig is anything otherthan the root
Figure
this (Sub)Figure is on. In future it will alwaysraise an exception.
- set_frameon(b)[source]#
Set the figure's background patch visibility, i.e.whether the figure background will be drawn. Equivalent to
Figure.patch.set_visible()
.- Parameters:
- bbool
- set_linewidth(linewidth)[source]#
Set the line width of the Figure rectangle.
- Parameters:
- linewidthnumber
- subfigures(nrows=1,ncols=1,squeeze=True,wspace=None,hspace=None,width_ratios=None,height_ratios=None,**kwargs)[source]#
Add a set of subfigures to this figure or subfigure.
A subfigure has the same artist methods as a figure, and is logicallythe same as a figure, but cannot print itself.SeeFigure subfigures.
Changed in version 3.10:subfigures are now added in row-major order.
- Parameters:
- nrows, ncolsint, default: 1
Number of rows/columns of the subfigure grid.
- squeezebool, default: True
If True, extra dimensions are squeezed out from the returnedarray of subfigures.
- wspace, hspacefloat, default: None
The amount of width/height reserved for space between subfigures,expressed as a fraction of the average subfigure width/height.If not given, the values will be inferred from rcParams if usingconstrained layout (see
ConstrainedLayoutEngine
), or zero ifnot using a layout engine.- width_ratiosarray-like of lengthncols, optional
Defines the relative widths of the columns. Each column gets arelative width of
width_ratios[i]/sum(width_ratios)
.If not given, all columns will have the same width.- height_ratiosarray-like of lengthnrows, optional
Defines the relative heights of the rows. Each row gets arelative height of
height_ratios[i]/sum(height_ratios)
.If not given, all rows will have the same height.
- subplot_mosaic(mosaic,*,sharex=False,sharey=False,width_ratios=None,height_ratios=None,empty_sentinel='.',subplot_kw=None,per_subplot_kw=None,gridspec_kw=None)[source]#
Build a layout of Axes based on ASCII art or nested lists.
This is a helper function to build complex GridSpec layouts visually.
SeeComplex and semantic figure composition (subplot_mosaic)for an example and full API documentation
- Parameters:
- mosaiclist of list of {hashable or nested} or str
A visual layout of how you want your Axes to be arrangedlabeled as strings. For example
x=[['A panel','A panel','edge'],['C panel','.','edge']]
produces 4 Axes:
'A panel' which is 1 row high and spans the first two columns
'edge' which is 2 rows high and is on the right edge
'C panel' which in 1 row and 1 column wide in the bottom left
a blank space 1 row and 1 column wide in the bottom center
Any of the entries in the layout can be a list of listsof the same form to create nested layouts.
If input is a str, then it can either be a multi-line string ofthe form
'''AAEC.E'''
where each character is a column and each line is a row. Or itcan be a single-line string where rows are separated by
;
:'AB;CC'
The string notation allows only single character Axes labels anddoes not support nesting but is very terse.
The Axes identifiers may be
str
or a non-iterable hashableobject (e.g.tuple
s may not be used).- sharex, shareybool, default: False
If True, the x-axis (sharex) or y-axis (sharey) will be sharedamong all subplots. In that case, tick label visibility and axisunits behave as for
subplots
. If False, each subplot's x- ory-axis will be independent.- width_ratiosarray-like of lengthncols, optional
Defines the relative widths of the columns. Each column gets arelative width of
width_ratios[i]/sum(width_ratios)
.If not given, all columns will have the same width. Equivalenttogridspec_kw={'width_ratios':[...]}
. In the case of nestedlayouts, this argument applies only to the outer layout.- height_ratiosarray-like of lengthnrows, optional
Defines the relative heights of the rows. Each row gets arelative height of
height_ratios[i]/sum(height_ratios)
.If not given, all rows will have the same height. Equivalenttogridspec_kw={'height_ratios':[...]}
. In the case of nestedlayouts, this argument applies only to the outer layout.- subplot_kwdict, optional
Dictionary with keywords passed to the
Figure.add_subplot
callused to create each subplot. These values may be overridden byvalues inper_subplot_kw.- per_subplot_kwdict, optional
A dictionary mapping the Axes identifiers or tuples of identifiersto a dictionary of keyword arguments to be passed to the
Figure.add_subplot
call used to create each subplot. The valuesin these dictionaries have precedence over the values insubplot_kw.Ifmosaic is a string, and thus all keys are single characters,it is possible to use a single string instead of a tuple as keys;i.e.
"AB"
is equivalent to("A","B")
.Added in version 3.7.
- gridspec_kwdict, optional
Dictionary with keywords passed to the
GridSpec
constructor usedto create the grid the subplots are placed on. In the case ofnested layouts, this argument applies only to the outer layout.For more complex layouts, users should useFigure.subfigures
to create the nesting.- empty_sentinelobject, optional
Entry in the layout to mean "leave this space empty". Defaultsto
'.'
. Note, iflayout is a string, it is processed viainspect.cleandoc
to remove leading white space, which mayinterfere with using white-space as the empty sentinel.
- Returns:
- dict[label, Axes]
A dictionary mapping the labels to the Axes objects. The order ofthe Axes is left-to-right and top-to-bottom of their position in thetotal layout.
- subplots(nrows=1,ncols=1,*,sharex=False,sharey=False,squeeze=True,width_ratios=None,height_ratios=None,subplot_kw=None,gridspec_kw=None)[source]#
Add a set of subplots to this figure.
This utility wrapper makes it convenient to create common layouts ofsubplots in a single call.
- Parameters:
- nrows, ncolsint, default: 1
Number of rows/columns of the subplot grid.
- sharex, shareybool or {'none', 'all', 'row', 'col'}, default: False
Controls sharing of x-axis (sharex) or y-axis (sharey):
True or 'all': x- or y-axis will be shared among all subplots.
False or 'none': each subplot x- or y-axis will be independent.
'row': each subplot row will share an x- or y-axis.
'col': each subplot column will share an x- or y-axis.
When subplots have a shared x-axis along a column, only the x ticklabels of the bottom subplot are created. Similarly, when subplotshave a shared y-axis along a row, only the y tick labels of thefirst column subplot are created. To later turn other subplots'ticklabels on, use
tick_params
.When subplots have a shared axis that has units, calling
Axis.set_units
will update each axis with the new units.Note that it is not possible to unshare axes.
- squeezebool, default: True
If True, extra dimensions are squeezed out from the returnedarray of Axes:
if only one subplot is constructed (nrows=ncols=1), theresulting single Axes object is returned as a scalar.
for Nx1 or 1xM subplots, the returned object is a 1D numpyobject array of Axes objects.
for NxM, subplots with N>1 and M>1 are returned as a 2D array.
If False, no squeezing at all is done: the returned Axes objectis always a 2D array containing Axes instances, even if it endsup being 1x1.
- width_ratiosarray-like of lengthncols, optional
Defines the relative widths of the columns. Each column gets arelative width of
width_ratios[i]/sum(width_ratios)
.If not given, all columns will have the same width. Equivalenttogridspec_kw={'width_ratios':[...]}
.- height_ratiosarray-like of lengthnrows, optional
Defines the relative heights of the rows. Each row gets arelative height of
height_ratios[i]/sum(height_ratios)
.If not given, all rows will have the same height. Equivalenttogridspec_kw={'height_ratios':[...]}
.- subplot_kwdict, optional
Dict with keywords passed to the
Figure.add_subplot
call used tocreate each subplot.- gridspec_kwdict, optional
Dict with keywords passed to the
GridSpec
constructor used to createthe grid the subplots are placed on.
- Returns:
Examples
# First create some toy data:x=np.linspace(0,2*np.pi,400)y=np.sin(x**2)# Create a figurefig=plt.figure()# Create a subplotax=fig.subplots()ax.plot(x,y)ax.set_title('Simple plot')# Create two subplots and unpack the output array immediatelyax1,ax2=fig.subplots(1,2,sharey=True)ax1.plot(x,y)ax1.set_title('Sharing Y axis')ax2.scatter(x,y)# Create four polar Axes and access them through the returned arrayaxes=fig.subplots(2,2,subplot_kw=dict(projection='polar'))axes[0,0].plot(x,y)axes[1,1].scatter(x,y)# Share an X-axis with each column of subplotsfig.subplots(2,2,sharex='col')# Share a Y-axis with each row of subplotsfig.subplots(2,2,sharey='row')# Share both X- and Y-axes with all subplotsfig.subplots(2,2,sharex='all',sharey='all')# Note that this is the same asfig.subplots(2,2,sharex=True,sharey=True)
- subplots_adjust(left=None,bottom=None,right=None,top=None,wspace=None,hspace=None)[source]#
Adjust the subplot layout parameters.
Unset parameters are left unmodified; initial values are given by
rcParams["figure.subplot.[name]"]
.- Parameters:
- leftfloat, optional
The position of the left edge of the subplots,as a fraction of the figure width.
- rightfloat, optional
The position of the right edge of the subplots,as a fraction of the figure width.
- bottomfloat, optional
The position of the bottom edge of the subplots,as a fraction of the figure height.
- topfloat, optional
The position of the top edge of the subplots,as a fraction of the figure height.
- wspacefloat, optional
The width of the padding between subplots,as a fraction of the average Axes width.
- hspacefloat, optional
The height of the padding between subplots,as a fraction of the average Axes height.
- suptitle(t,**kwargs)[source]#
Add a centered super title to the figure.
- Parameters:
- tstr
The super title text.
- xfloat, default: 0.5
The x location of the text in figure coordinates.
- yfloat, default: 0.98
The y location of the text in figure coordinates.
- horizontalalignment, ha{'center', 'left', 'right'}, default: center
The horizontal alignment of the text relative to (x,y).
- verticalalignment, va{'top', 'center', 'bottom', 'baseline'}, default: top
The vertical alignment of the text relative to (x,y).
- fontsize, sizedefault:
rcParams["figure.titlesize"]
(default:'large'
) The font size of the text. See
Text.set_size
for possiblevalues.- fontweight, weightdefault:
rcParams["figure.titleweight"]
(default:'normal'
) The font weight of the text. See
Text.set_weight
for possiblevalues.
- Returns:
- text
The
Text
instance of the super title.
- Other Parameters:
- fontpropertiesNone or dict, optional
A dict of font properties. Iffontproperties is given thedefault values for font size and weight are taken from the
FontProperties
defaults.rcParams["figure.titlesize"]
(default:'large'
) andrcParams["figure.titleweight"]
(default:'normal'
) are ignored in this case.- **kwargs
Additional kwargs are
matplotlib.text.Text
properties.
- supxlabel(t,**kwargs)[source]#
Add a centered super xlabel to the figure.
- Parameters:
- tstr
The super xlabel text.
- xfloat, default: 0.5
The x location of the text in figure coordinates.
- yfloat, default: 0.01
The y location of the text in figure coordinates.
- horizontalalignment, ha{'center', 'left', 'right'}, default: center
The horizontal alignment of the text relative to (x,y).
- verticalalignment, va{'top', 'center', 'bottom', 'baseline'}, default: bottom
The vertical alignment of the text relative to (x,y).
- fontsize, sizedefault:
rcParams["figure.labelsize"]
(default:'large'
) The font size of the text. See
Text.set_size
for possiblevalues.- fontweight, weightdefault:
rcParams["figure.labelweight"]
(default:'normal'
) The font weight of the text. See
Text.set_weight
for possiblevalues.
- Returns:
- text
The
Text
instance of the super xlabel.
- Other Parameters:
- fontpropertiesNone or dict, optional
A dict of font properties. Iffontproperties is given thedefault values for font size and weight are taken from the
FontProperties
defaults.rcParams["figure.labelsize"]
(default:'large'
) andrcParams["figure.labelweight"]
(default:'normal'
) are ignored in this case.- **kwargs
Additional kwargs are
matplotlib.text.Text
properties.
- supylabel(t,**kwargs)[source]#
Add a centered super ylabel to the figure.
- Parameters:
- tstr
The super ylabel text.
- xfloat, default: 0.02
The x location of the text in figure coordinates.
- yfloat, default: 0.5
The y location of the text in figure coordinates.
- horizontalalignment, ha{'center', 'left', 'right'}, default: left
The horizontal alignment of the text relative to (x,y).
- verticalalignment, va{'top', 'center', 'bottom', 'baseline'}, default: center
The vertical alignment of the text relative to (x,y).
- fontsize, sizedefault:
rcParams["figure.labelsize"]
(default:'large'
) The font size of the text. See
Text.set_size
for possiblevalues.- fontweight, weightdefault:
rcParams["figure.labelweight"]
(default:'normal'
) The font weight of the text. See
Text.set_weight
for possiblevalues.
- Returns:
- text
The
Text
instance of the super ylabel.
- Other Parameters:
- fontpropertiesNone or dict, optional
A dict of font properties. Iffontproperties is given thedefault values for font size and weight are taken from the
FontProperties
defaults.rcParams["figure.labelsize"]
(default:'large'
) andrcParams["figure.labelweight"]
(default:'normal'
) are ignored in this case.- **kwargs
Additional kwargs are
matplotlib.text.Text
properties.
- text(x,y,s,fontdict=None,**kwargs)[source]#
Add text to figure.
- Parameters:
- x, yfloat
The position to place the text. By default, this is in figurecoordinates, floats in [0, 1]. The coordinate system can be changedusing thetransform keyword.
- sstr
The text string.
- fontdictdict, optional
A dictionary to override the default text properties. If not given,the defaults are determined by
rcParams["font.*"]
. Properties passed askwargs override the corresponding ones given infontdict.
- Returns:
- Other Parameters:
- **kwargs
Text
properties Other miscellaneous text parameters.
Property
Description
a filter function, which takes a (m, n, 3) float array and a dpi value, and returns a (m, n, 3) array and two offsets from the bottom left corner of the image
float or None
bool
bool
dict with properties for
FancyBboxPatch
or Noneunknown
unknown
unknown
fontfamily
orfamily
orfontname
{FONTNAME, 'serif', 'sans-serif', 'cursive', 'fantasy', 'monospace'}
float or {'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', 'xx-large'}
{a numeric value in range 0-1000, 'ultra-condensed', 'extra-condensed', 'condensed', 'semi-condensed', 'normal', 'semi-expanded', 'expanded', 'extra-expanded', 'ultra-expanded'}
{'normal', 'italic', 'oblique'}
{'normal', 'small-caps'}
{a numeric value in range 0-1000, 'ultralight', 'light', 'normal', 'regular', 'book', 'medium', 'roman', 'semibold', 'demibold', 'demi', 'bold', 'heavy', 'extra bold', 'black'}
str
{'left', 'center', 'right'}
bool
object
float (multiple of font size)
str
bool
{'left', 'right', 'center'}
bool
list of
AbstractPathEffect
None or bool or float or callable
(float, float)
bool
float or {'vertical', 'horizontal'}
{None, 'default', 'anchor', 'xtick', 'ytick'}
(scale: float, length: float, randomness: float)
bool or None
object
bool
str
bool, default:
rcParams["text.usetex"]
(default:False
){'baseline', 'bottom', 'center', 'center_baseline', 'top'}
bool
bool
float
float
float
- **kwargs
See also
Helper functions#
- matplotlib.figure.figaspect(arg)[source]#
Calculate the width and height for a figure with a specified aspect ratio.
While the height is taken from
rcParams["figure.figsize"]
(default:[6.4,4.8]
), the width isadjusted to match the desired aspect ratio. Additionally, it is ensuredthat the width is in the range [4., 16.] and the height is in the range[2., 16.]. If necessary, the default height is adjusted to ensure this.- Parameters:
- argfloat or 2D array
If a float, this defines the aspect ratio (i.e. the ratio height /width).In case of an array the aspect ratio is number of rows / number ofcolumns, so that the array could be fitted in the figure undistorted.
- Returns:
- size(2,) array
The width and height of the figure in inches.
Notes
If you want to create an Axes within the figure, that still preserves theaspect ratio, be sure to create it with equal width and height. Seeexamples below.
Thanks to Fernando Perez for this function.
Examples
Make a figure twice as tall as it is wide:
w,h=figaspect(2.)fig=Figure(figsize=(w,h))ax=fig.add_axes([0.1,0.1,0.8,0.8])ax.imshow(A,**kwargs)
Make a figure with the proper aspect for an array:
A=rand(5,3)w,h=figaspect(A)fig=Figure(figsize=(w,h))ax=fig.add_axes([0.1,0.1,0.8,0.8])ax.imshow(A,**kwargs)