matplotlib.patches.Patch#

class matplotlib.patches.Patch(*, edgecolor=None, facecolor=None, color=None, linewidth=None, linestyle=None, antialiased=None, hatch=None, fill=True, capstyle=None, joinstyle=None, **kwargs)[source]#

Bases: Artist

A patch is a 2D artist with a face color and an edge color.

If any of edgecolor, facecolor, linewidth, or antialiased are None, they default to their rc params setting.

The following kwarg properties are supported

Property	Description
`agg_filter`	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
`alpha`	unknown
`animated`	bool
`antialiased` or aa	bool or None
`capstyle`	`CapStyle` or {'butt', 'projecting', 'round'}
`clip_box`	`Bbox`
`clip_on`	bool
`clip_path`	Patch or (Path, Transform) or None
`color`	color
`edgecolor` or ec	color or None
`facecolor` or fc	color or None
`figure`	`Figure`
`fill`	bool
`gid`	str
`hatch`	{'/', '\', '\|', '-', '+', 'x', 'o', 'O', '.', '*'}
`in_layout`	bool
`joinstyle`	`JoinStyle` or {'miter', 'round', 'bevel'}
`label`	object
`linestyle` or ls	{'-', '--', '-.', ':', '', (offset, on-off-seq), ...}
`linewidth` or lw	float or None
`mouseover`	bool
`path_effects`	`AbstractPathEffect`
`picker`	None or bool or float or callable
`rasterized`	bool
`sketch_params`	(scale: float, length: float, randomness: float)
`snap`	bool or None
`transform`	`Transform`
`url`	str
`visible`	bool
`zorder`	float

contains(mouseevent, radius=None)[source]#

Test whether the mouse event occurred in the patch.

Returns:

(bool, empty dict)

contains_point(point, radius=None)[source]#

Return whether the given point is inside the patch.

Parameters:

point(float, float): The point (x, y) to check, in target coordinates of self.get_transform(). These are display coordinates for patches that are added to a figure or axes.
radiusfloat, optional: Add an additional margin on the patch in target coordinates of self.get_transform(). See Path.contains_point for further details.

Returns:

bool

Notes

The proper use of this method depends on the transform of the patch. Isolated patches do not have a transform. In this case, the patch creation coordinates and the point coordinates match. The following example checks that the center of a circle is within the circle

>>> center = 0, 0
>>> c = Circle(center, radius=1)
>>> c.contains_point(center)
True

The convention of checking against the transformed patch stems from the fact that this method is predominantly used to check if display coordinates (e.g. from mouse events) are within the patch. If you want to do the above check with data coordinates, you have to properly transform them first:

>>> center = 0, 0
>>> c = Circle(center, radius=1)
>>> plt.gca().add_patch(c)
>>> transformed_center = c.get_transform().transform(center)
>>> c.contains_point(transformed_center)
True

contains_points(points, radius=None)[source]#

Return whether the given points are inside the patch.

Parameters:

points(N, 2) array: The points to check, in target coordinates of self.get_transform(). These are display coordinates for patches that are added to a figure or axes. Columns contain x and y values.
radiusfloat, optional: Add an additional margin on the patch in target coordinates of self.get_transform(). See Path.contains_point for further details.

Returns:

length-N bool array

Notes

The proper use of this method depends on the transform of the patch. See the notes on Patch.contains_point.

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:

rendererRendererBase subclass.

Notes

This method is overridden in the Artist subclasses.

property fill#: Return whether the patch is filled.

get_aa()[source]#: Alias for get_antialiased.

get_antialiased()[source]#: Return whether antialiasing is used for drawing.

get_capstyle()[source]#: Return the capstyle.

get_data_transform()[source]#: Return the Transform mapping data coordinates to physical coordinates.

get_ec()[source]#: Alias for get_edgecolor.

get_edgecolor()[source]#: Return the edge color.

get_extents()[source]#: Return the Patch's axis-aligned extents as a Bbox.

get_facecolor()[source]#: Return the face color.

get_fc()[source]#: Alias for get_facecolor.

get_fill()[source]#: Return whether the patch is filled.

get_hatch()[source]#: Return the hatching pattern.

get_joinstyle()[source]#: Return the joinstyle.

get_linestyle()[source]#: Return the linestyle.

get_linewidth()[source]#: Return the line width in points.

get_ls()[source]#: Alias for get_linestyle.

get_lw()[source]#: Alias for get_linewidth.

get_patch_transform()[source]#

Return the Transform instance mapping patch coordinates to data coordinates.

For example, one may define a patch of a circle which represents a radius of 5 by providing coordinates for a unit circle, and a transform which scales the coordinates (the patch coordinate) by 5.

get_path()[source]#: Return the path of this patch.

get_transform()[source]#: Return the Transform applied to the Patch.

get_verts()[source]#

Return a copy of the vertices used in this patch.

If the patch contains Bezier curves, the curves will be interpolated by line segments. To access the curves as curves, use get_path.

get_window_extent(renderer=None)[source]#

Get the artist's bounding box in display space.

The bounding box' width and height are nonnegative.

Subclasses should override for inclusion in the bounding box "tight" calculation. Default is to return an empty bounding box at 0, 0.

Be careful when using this function, the results will not update if the artist window extent of the artist changes. The extent can change due to any changes in the transform stack, such as changing the axes limits, the figure size, or the canvas used (as is done when saving a figure). This can lead to unexpected behavior where interactive figures will look fine on the screen, but will save incorrectly.

set(*, agg_filter=<UNSET>, alpha=<UNSET>, animated=<UNSET>, antialiased=<UNSET>, capstyle=<UNSET>, clip_box=<UNSET>, clip_on=<UNSET>, clip_path=<UNSET>, color=<UNSET>, edgecolor=<UNSET>, facecolor=<UNSET>, fill=<UNSET>, gid=<UNSET>, hatch=<UNSET>, in_layout=<UNSET>, joinstyle=<UNSET>, label=<UNSET>, linestyle=<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

agg_filter

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

alpha

unknown

animated

bool

antialiased

bool or None

capstyle

CapStyle or {'butt', 'projecting', 'round'}

clip_box

Bbox

clip_on

bool

clip_path

Patch or (Path, Transform) or None

color

color

edgecolor

color or None

facecolor

color or None

figure

Figure

fill

bool

gid

str

hatch

{'/', '\', '|', '-', '+', 'x', 'o', 'O', '.', '*'}

in_layout

bool

joinstyle

JoinStyle or {'miter', 'round', 'bevel'}

label

object

linestyle

{'-', '--', '-.', ':', '', (offset, on-off-seq), ...}

linewidth

float or None

mouseover

bool

path_effects

AbstractPathEffect

picker

None or bool or float or callable

rasterized

bool

sketch_params

(scale: float, length: float, randomness: float)

snap

bool or None

transform

Transform

url

str

visible

bool

zorder

float

set_aa(aa)[source]#: Alias for set_antialiased.

set_alpha(alpha)[source]#

Set the alpha value used for blending - not supported on all backends.

Parameters:

alphascalar or None: alpha must be within the 0-1 range, inclusive.

set_antialiased(aa)[source]#

Set whether to use antialiased rendering.

Parameters:

aabool or None

set_capstyle(s)[source]#

Set the CapStyle.

The default capstyle is 'round' for FancyArrowPatch and 'butt' for all other patches.

Parameters:

sCapStyle or {'butt', 'projecting', 'round'}

set_color(c)[source]#

Set both the edgecolor and the facecolor.

Parameters:

ccolor

linestyle	description
`'-'` or `'solid'`	solid line
`'--'` or `'dashed'`	dashed line
`'-.'` or `'dashdot'`	dash-dotted line
`':'` or `'dotted'`	dotted line
`'none'`, `'None'`, `' '`, or `''`	draw nothing