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)

Bases: matplotlib.artist.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
alpha	float or None
animated	bool
antialiased	unknown
capstyle	{'butt', 'round', 'projecting'}
clip_box	Bbox
clip_on	bool
clip_path	[(Path, Transform) | Patch | None]
color	color
contains	callable
edgecolor	color or None or 'auto'
facecolor	color or None
figure	Figure
fill	bool
gid	str
hatch	{'/', '\', '|', '-', '+', 'x', 'o', 'O', '.', '*'}
in_layout	bool
joinstyle	{'miter', 'round', 'bevel'}
label	object
linestyle	{'-', '--', '-.', ':', '', (offset, on-off-seq), ...}
linewidth	float or None for default
path_effects	AbstractPathEffect
picker	None or bool or float or callable
rasterized	bool or None
sketch_params	(scale: float, length: float, randomness: float)
snap	bool or None
transform	Transform
url	str
visible	bool
zorder	float

contains(mouseevent, radius=None)

Test whether the mouse event occurred in the patch.

Returns T/F, {}

contains_point(point, radius=None)

Returns True if the given point is inside the path (transformed with its transform attribute).

radius allows the path to be made slightly larger or smaller.

contains_points(points, radius=None)

Returns a bool array which is True if the (closed) path contains the corresponding point. (transformed with its transform attribute).

points must be Nx2 array. radius allows the path to be made slightly larger or smaller.

draw(renderer)

Draw the Patch to the given renderer.

fill

return whether fill is set

get_aa(*args, **kwargs)

alias for get_antialiased

get_antialiased()

Returns True if the Patch is to be drawn with antialiasing.

get_capstyle()

Return the current capstyle

get_data_transform()

Return the Transform instance which maps data coordinates to physical coordinates.

get_ec(*args, **kwargs)

alias for get_edgecolor

get_edgecolor()

Return the edge color of the Patch.

get_extents()

Return a Bbox object defining the axis-aligned extents of the Patch.

get_facecolor()

Return the face color of the Patch.

get_fc(*args, **kwargs)

alias for get_facecolor

get_fill()

return whether fill is set

get_hatch()

Return the current hatching pattern

get_joinstyle()

Return the current joinstyle

get_linestyle()

Return the linestyle.

get_linewidth()

Return the line width in points.

get_ls(*args, **kwargs)

alias for get_linestyle

get_lw(*args, **kwargs)

alias for get_linewidth

get_patch_transform()

Return the Transform instance which takes 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()

Return the path of this patch

get_transform()

Return the Transform applied to the Patch.

get_verts()

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)

Get the axes bounding box in display space. 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_aa(*args, **kwargs)

alias for set_antialiased

set_alpha(alpha)

Set the alpha transparency of the patch.

Parameters:

alpha : float or None

set_antialiased(aa)

Set whether to use antialiased rendering.

Parameters:

b : bool or None

set_capstyle(s)

Set the patch capstyle

Parameters:

s : {'butt', 'round', 'projecting'}

set_color(c)

Set both the edgecolor and the facecolor.

See also

set_facecolor(), set_edgecolor()

For setting the edge or face color individually.

Parameters:

c : color

set_ec(*args, **kwargs)

alias for set_edgecolor

set_edgecolor(color)

Set the patch edge color.

Parameters:

color : color or None or 'auto'

set_facecolor(color)

Set the patch face color.

Parameters:

color : color or None

set_fc(*args, **kwargs)

alias for set_facecolor

set_fill(b)

Set whether to fill the patch.

Parameters:

b : bool

set_hatch(hatch)

Set the hatching pattern

hatch can be one of:

/   - diagonal hatching
\   - back diagonal
|   - vertical
-   - horizontal
+   - crossed
x   - crossed diagonal
o   - small circle
O   - large circle
.   - dots
*   - stars

Letters can be combined, in which case all the specified hatchings are done. If same letter repeats, it increases the density of hatching of that pattern.

Hatching is supported in the PostScript, PDF, SVG and Agg backends only.

Parameters:

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

set_joinstyle(s)

Set the patch joinstyle

Parameters:

s : {'miter', 'round', 'bevel'}

set_linestyle(ls)

Set the patch linestyle.

linestyle	description
'-' or 'solid'	solid line
'--' or 'dashed'	dashed line
'-.' or 'dashdot'	dash-dotted line
':' or 'dotted'	dotted line

Alternatively a dash tuple of the following form can be provided:

(offset, onoffseq),

where onoffseq is an even length tuple of on and off ink in points.

Parameters:

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

The line style.

set_linewidth(w)

Set the patch linewidth in points

ACCEPTS: float or None for default

set_ls(*args, **kwargs)

alias for set_linestyle

set_lw(*args, **kwargs)

alias for set_linewidth

update_from(other)

Updates this Patch from the properties of other.

validCap = ('butt', 'round', 'projecting')

validJoin = ('miter', 'round', 'bevel')

zorder = 1

Examples using matplotlib.patches.Patch

Composing Custom Legends

Legend guide