patches

matplotlib.patches

class matplotlib.patches.Arc(xy, width, height, angle=0.0, theta1=0.0, theta2=360.0, **kwargs)

Bases: matplotlib.patches.Ellipse

An elliptical arc. Because it performs various optimizations, it can not be filled.

The arc must be used in an Axes instance—it can not be added directly to a Figure—because it is optimized to only render the segments that are inside the axes bounding box with high resolution.

The following args are supported:

xy

center of ellipse

width

length of horizontal axis

height

length of vertical axis

angle

rotation in degrees (anti-clockwise)

theta1

starting angle of the arc in degrees

theta2

ending angle of the arc in degrees

If theta1 and theta2 are not provided, the arc will form a complete ellipse.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

draw(artist, renderer, *args, **kwargs)

Ellipses are normally drawn using an approximation that uses eight cubic bezier splines. The error of this approximation is 1.89818e-6, according to this unverified source:

Lancaster, Don. Approximating a Circle or an Ellipse Using Four Bezier Cubic Splines.

http://www.tinaja.com/glib/ellipse4.pdf

There is a use case where very large ellipses must be drawn with very high accuracy, and it is too expensive to render the entire ellipse with enough segments (either splines or line segments). Therefore, in the case where either radius of the ellipse is large enough that the error of the spline approximation will be visible (greater than one pixel offset from the ideal), a different technique is used.

In that case, only the visible parts of the ellipse are drawn, with each visible arc using a fixed number of spline segments (8). The algorithm proceeds as follows:

1. The points where the ellipse intersects the axes bounding box are located. (This is done be performing an inverse transformation on the axes bbox such that it is relative to the unit circle – this makes the intersection calculation much easier than doing rotated ellipse intersection directly).

   This uses the “line intersecting a circle” algorithm from:

   Vince, John. Geometry for Computer Graphics: Formulae, Examples & Proofs. London: Springer-Verlag, 2005.

2. The angles of each of the intersection points are calculated.

3. Proceeding counterclockwise starting in the positive x-direction, each of the visible arc-segments between the pairs of vertices are drawn using the bezier arc approximation technique implemented in matplotlib.path.Path.arc().

class matplotlib.patches.Arrow(x, y, dx, dy, width=1.0, **kwargs)

Bases: matplotlib.patches.Patch

An arrow patch.

Draws an arrow, starting at (x, y), direction and length given by (dx, dy) the width of the arrow is scaled by width.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

get_patch_transform()

get_path()

class matplotlib.patches.ArrowStyle

Bases: matplotlib.patches._Style

ArrowStyle is a container class which defines several arrowstyle classes, which is used to create an arrow path along a given path. These are mainly used with FancyArrowPatch.

A arrowstyle object can be either created as:

ArrowStyle.Fancy(head_length=.4, head_width=.4, tail_width=.4)

or:

ArrowStyle("Fancy", head_length=.4, head_width=.4, tail_width=.4)

or:

ArrowStyle("Fancy, head_length=.4, head_width=.4, tail_width=.4")

The following classes are defined

Class	Name	Attrs
Curve	-	None
CurveB	->	head_length=0.4,head_width=0.2
BracketB	-[	widthB=1.0,lengthB=0.2,angleB=None
CurveFilledB	-|>	head_length=0.4,head_width=0.2
CurveA	<-	head_length=0.4,head_width=0.2
CurveAB	<->	head_length=0.4,head_width=0.2
CurveFilledA	<|-	head_length=0.4,head_width=0.2
CurveFilledAB	<|-|>	head_length=0.4,head_width=0.2
BracketA	]-	widthA=1.0,lengthA=0.2,angleA=None
BracketAB	]-[	widthA=1.0,lengthA=0.2,angleA=None,widthB=1.0,lengthB=0.2,angleB=None
Fancy	fancy	head_length=0.4,head_width=0.4,tail_width=0.4
Simple	simple	head_length=0.5,head_width=0.5,tail_width=0.2
Wedge	wedge	tail_width=0.3,shrink_factor=0.5
BarAB	|-|	widthA=1.0,angleA=None,widthB=1.0,angleB=None

An instance of any arrow style class is an callable object, whose call signature is:

__call__(self, path, mutation_size, linewidth, aspect_ratio=1.)

and it returns a tuple of a Path instance and a boolean value. path is a Path instance along witch the arrow will be drawn. mutation_size and aspect_ratio has a same meaning as in BoxStyle. linewidth is a line width to be stroked. This is meant to be used to correct the location of the head so that it does not overshoot the destination point, but not all classes support it.

(Source code, png)

class BarAB(widthA=1.0, angleA=None, widthB=1.0, angleB=None)

Bases: matplotlib.patches._Bracket

An arrow with a bar(|) at both ends.

widthA

width of the bracket

lengthA

length of the bracket

angleA

angle between the bracket and the line

widthB

width of the bracket

lengthB

length of the bracket

angleB

angle between the bracket and the line

class ArrowStyle.BracketA(widthA=1.0, lengthA=0.2, angleA=None)

Bases: matplotlib.patches._Bracket

An arrow with a bracket(]) at its end.

widthA

width of the bracket

lengthA

length of the bracket

angleA

angle between the bracket and the line

class ArrowStyle.BracketAB(widthA=1.0, lengthA=0.2, angleA=None, widthB=1.0, lengthB=0.2, angleB=None)

Bases: matplotlib.patches._Bracket

An arrow with a bracket(]) at both ends.

widthA

width of the bracket

lengthA

length of the bracket

angleA

angle between the bracket and the line

widthB

width of the bracket

lengthB

length of the bracket

angleB

angle between the bracket and the line

class ArrowStyle.BracketB(widthB=1.0, lengthB=0.2, angleB=None)

Bases: matplotlib.patches._Bracket

An arrow with a bracket([) at its end.

widthB

width of the bracket

lengthB

length of the bracket

angleB

angle between the bracket and the line

class ArrowStyle.Curve

Bases: matplotlib.patches._Curve

A simple curve without any arrow head.

class ArrowStyle.CurveA(head_length=0.4, head_width=0.2)

Bases: matplotlib.patches._Curve

An arrow with a head at its begin point.

head_length

length of the arrow head

head_width

width of the arrow head

class ArrowStyle.CurveAB(head_length=0.4, head_width=0.2)

Bases: matplotlib.patches._Curve

An arrow with heads both at the begin and the end point.

head_length

length of the arrow head

head_width

width of the arrow head

class ArrowStyle.CurveB(head_length=0.4, head_width=0.2)

Bases: matplotlib.patches._Curve

An arrow with a head at its end point.

head_length

length of the arrow head

head_width

width of the arrow head

class ArrowStyle.CurveFilledA(head_length=0.4, head_width=0.2)

Bases: matplotlib.patches._Curve

An arrow with filled triangle head at the begin.

head_length

length of the arrow head

head_width

width of the arrow head

class ArrowStyle.CurveFilledAB(head_length=0.4, head_width=0.2)

Bases: matplotlib.patches._Curve

An arrow with filled triangle heads both at the begin and the end point.

head_length

length of the arrow head

head_width

width of the arrow head

class ArrowStyle.CurveFilledB(head_length=0.4, head_width=0.2)

Bases: matplotlib.patches._Curve

An arrow with filled triangle head at the end.

head_length

length of the arrow head

head_width

width of the arrow head

class ArrowStyle.Fancy(head_length=0.4, head_width=0.4, tail_width=0.4)

Bases: matplotlib.patches._Base

A fancy arrow. Only works with a quadratic bezier curve.

head_length

length of the arrow head

head_with

width of the arrow head

tail_width

width of the arrow tail

transmute(path, mutation_size, linewidth)

class ArrowStyle.Simple(head_length=0.5, head_width=0.5, tail_width=0.2)

Bases: matplotlib.patches._Base

A simple arrow. Only works with a quadratic bezier curve.

head_length

length of the arrow head

head_with

width of the arrow head

tail_width

width of the arrow tail

transmute(path, mutation_size, linewidth)

class ArrowStyle.Wedge(tail_width=0.3, shrink_factor=0.5)

Bases: matplotlib.patches._Base

Wedge(?) shape. Only wokrs with a quadratic bezier curve. The begin point has a width of the tail_width and the end point has a width of 0. At the middle, the width is shrink_factor*tail_width.

tail_width

width of the tail

shrink_factor

fraction of the arrow width at the middle point

transmute(path, mutation_size, linewidth)

class matplotlib.patches.BoxStyle

Bases: matplotlib.patches._Style

BoxStyle is a container class which defines several boxstyle classes, which are used for FancyBoxPatch.

A style object can be created as:

BoxStyle.Round(pad=0.2)

or:

BoxStyle("Round", pad=0.2)

or:

BoxStyle("Round, pad=0.2")

Following boxstyle classes are defined.

Class	Name	Attrs
Circle	circle	pad=0.3
DArrow	darrow	pad=0.3
LArrow	larrow	pad=0.3
RArrow	rarrow	pad=0.3
Round	round	pad=0.3,rounding_size=None
Round4	round4	pad=0.3,rounding_size=None
Roundtooth	roundtooth	pad=0.3,tooth_size=None
Sawtooth	sawtooth	pad=0.3,tooth_size=None
Square	square	pad=0.3

An instance of any boxstyle class is an callable object, whose call signature is:

__call__(self, x0, y0, width, height, mutation_size, aspect_ratio=1.)

and returns a Path instance. x0, y0, width and height specify the location and size of the box to be drawn. mutation_scale determines the overall size of the mutation (by which I mean the transformation of the rectangle to the fancy box). mutation_aspect determines the aspect-ratio of the mutation.

(Source code, png)

class Circle(pad=0.3)

Bases: matplotlib.patches._Base

A simple circle box.

Parameters:

pad : float

The amount of padding around the original box.

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.DArrow(pad=0.3)

Bases: matplotlib.patches._Base

(Double) Arrow Box

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.LArrow(pad=0.3)

Bases: matplotlib.patches._Base

(left) Arrow Box

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.RArrow(pad=0.3)

Bases: matplotlib.patches.LArrow

(right) Arrow Box

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.Round(pad=0.3, rounding_size=None)

Bases: matplotlib.patches._Base

A box with round corners.

pad

amount of padding

rounding_size

rounding radius of corners. pad if None

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.Round4(pad=0.3, rounding_size=None)

Bases: matplotlib.patches._Base

Another box with round edges.

pad

amount of padding

rounding_size

rounding size of edges. pad if None

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.Roundtooth(pad=0.3, tooth_size=None)

Bases: matplotlib.patches.Sawtooth

A rounded tooth box.

pad

amount of padding

tooth_size

size of the sawtooth. pad* if None

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.Sawtooth(pad=0.3, tooth_size=None)

Bases: matplotlib.patches._Base

A sawtooth box.

pad

amount of padding

tooth_size

size of the sawtooth. pad* if None

transmute(x0, y0, width, height, mutation_size)

class BoxStyle.Square(pad=0.3)

Bases: matplotlib.patches._Base

A simple square box.

pad amount of padding

transmute(x0, y0, width, height, mutation_size)

class matplotlib.patches.Circle(xy, radius=5, **kwargs)

Bases: matplotlib.patches.Ellipse

A circle patch.

Create true circle at center xy = (x, y) with given radius. Unlike CirclePolygon which is a polygonal approximation, this uses Bézier splines and is much closer to a scale-free circle.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

get_radius()

return the radius of the circle

radius

return the radius of the circle

set_radius(radius)

Set the radius of the circle

ACCEPTS: float

class matplotlib.patches.CirclePolygon(xy, radius=5, resolution=20, **kwargs)

Bases: matplotlib.patches.RegularPolygon

A polygon-approximation of a circle patch.

Create a circle at xy = (x, y) with given radius. This circle is approximated by a regular polygon with resolution sides. For a smoother circle drawn with splines, see Circle.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

class matplotlib.patches.ConnectionPatch(xyA, xyB, coordsA, coordsB=None, axesA=None, axesB=None, arrowstyle=u'-', arrow_transmuter=None, connectionstyle=u'arc3', connector=None, patchA=None, patchB=None, shrinkA=0.0, shrinkB=0.0, mutation_scale=10.0, mutation_aspect=None, clip_on=False, dpi_cor=1.0, **kwargs)

Bases: matplotlib.patches.FancyArrowPatch

A ConnectionPatch class is to make connecting lines between two points (possibly in different axes).

Connect point xyA in coordsA with point xyB in coordsB

Valid keys are

Key	Description
arrowstyle	the arrow style
connectionstyle	the connection style
relpos	default is (0.5, 0.5)
patchA	default is bounding box of the text
patchB	default is None
shrinkA	default is 2 points
shrinkB	default is 2 points
mutation_scale	default is text size (in points)
mutation_aspect	default is 1.
?	any key for matplotlib.patches.PathPatch

coordsA and coordsB are strings that indicate the coordinates of xyA and xyB.

Property	Description
‘figure points’	points from the lower left corner of the figure
‘figure pixels’	pixels from the lower left corner of the figure
‘figure fraction’	0,0 is lower left of figure and 1,1 is upper, right
‘axes points’	points from lower left corner of axes
‘axes pixels’	pixels from lower left corner of axes
‘axes fraction’	0,1 is lower left of axes and 1,1 is upper right
‘data’	use the coordinate system of the object being annotated (default)
‘offset points’	Specify an offset (in points) from the xy value
‘polar’	you can specify theta, r for the annotation, even in cartesian plots. Note that if you are using a polar axes, you do not need to specify polar for the coordinate system since that is the native “data” coordinate system.

draw(renderer)

Draw.

get_annotation_clip()

Return annotation_clip attribute. See set_annotation_clip() for the meaning of return values.

get_path_in_displaycoord()

Return the mutated path of the arrow in the display coord

set_annotation_clip(b)

set annotation_clip attribute.

• True: the annotation will only be drawn when self.xy is inside the

  axes.

• False: the annotation will always be drawn regardless of its

  position.

• None: the self.xy will be checked only if xycoords is “data”

class matplotlib.patches.ConnectionStyle

Bases: matplotlib.patches._Style

ConnectionStyle is a container class which defines several connectionstyle classes, which is used to create a path between two points. These are mainly used with FancyArrowPatch.

A connectionstyle object can be either created as:

ConnectionStyle.Arc3(rad=0.2)

or:

ConnectionStyle("Arc3", rad=0.2)

or:

ConnectionStyle("Arc3, rad=0.2")

The following classes are defined

Class	Name	Attrs
Angle	angle	angleA=90,angleB=0,rad=0.0
Angle3	angle3	angleA=90,angleB=0
Arc	arc	angleA=0,angleB=0,armA=None,armB=None,rad=0.0
Arc3	arc3	rad=0.0
Bar	bar	armA=0.0,armB=0.0,fraction=0.3,angle=None

An instance of any connection style class is an callable object, whose call signature is:

__call__(self, posA, posB,
         patchA=None, patchB=None,
         shrinkA=2., shrinkB=2.)

and it returns a Path instance. posA and posB are tuples of x,y coordinates of the two points to be connected. patchA (or patchB) is given, the returned path is clipped so that it start (or end) from the boundary of the patch. The path is further shrunk by shrinkA (or shrinkB) which is given in points.

class Angle(angleA=90, angleB=0, rad=0.0)

Bases: matplotlib.patches._Base

Creates a picewise continuous quadratic bezier path between two points. The path has a one passing-through point placed at the intersecting point of two lines which crosses the start (or end) point and has a angle of angleA (or angleB). The connecting edges are rounded with rad.

angleA

starting angle of the path

angleB

ending angle of the path

rad

rounding radius of the edge

connect(posA, posB)

class ConnectionStyle.Angle3(angleA=90, angleB=0)

Bases: matplotlib.patches._Base

Creates a simple quadratic bezier curve between two points. The middle control points is placed at the intersecting point of two lines which crosses the start (or end) point and has a angle of angleA (or angleB).

angleA

starting angle of the path

angleB

ending angle of the path

connect(posA, posB)

class ConnectionStyle.Arc(angleA=0, angleB=0, armA=None, armB=None, rad=0.0)

Bases: matplotlib.patches._Base

Creates a picewise continuous quadratic bezier path between two points. The path can have two passing-through points, a point placed at the distance of armA and angle of angleA from point A, another point with respect to point B. The edges are rounded with rad.

angleA :

starting angle of the path

angleB :

ending angle of the path

armA :

length of the starting arm

armB :

length of the ending arm

rad :

rounding radius of the edges

connect(posA, posB)

class ConnectionStyle.Arc3(rad=0.0)

Bases: matplotlib.patches._Base

Creates a simple quadratic bezier curve between two points. The curve is created so that the middle contol points (C1) is located at the same distance from the start (C0) and end points(C2) and the distance of the C1 to the line connecting C0-C2 is rad times the distance of C0-C2.

rad curvature of the curve.

connect(posA, posB)

class ConnectionStyle.Bar(armA=0.0, armB=0.0, fraction=0.3, angle=None)

Bases: matplotlib.patches._Base

A line with angle between A and B with armA and armB. One of the arm is extend so that they are connected in a right angle. The length of armA is determined by (armA + fraction x AB distance). Same for armB.

armA : minimum length of armA

armB : minimum length of armB

fraction : a fraction of the distance between two points that

will be added to armA and armB.

angle : angle of the connecting line (if None, parallel to A

and B)

connect(posA, posB)

class matplotlib.patches.Ellipse(xy, width, height, angle=0.0, **kwargs)

Bases: matplotlib.patches.Patch

A scale-free ellipse.

xy

center of ellipse

width

total length (diameter) of horizontal axis

height

total length (diameter) of vertical axis

angle

rotation in degrees (anti-clockwise)

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

contains(ev)

get_patch_transform()

get_path()

Return the vertices of the rectangle

class matplotlib.patches.FancyArrow(x, y, dx, dy, width=0.001, length_includes_head=False, head_width=None, head_length=None, shape=u'full', overhang=0, head_starts_at_zero=False, **kwargs)

Bases: matplotlib.patches.Polygon

Like Arrow, but lets you set head width and head height independently.

Constructor arguments

width: float (default: 0.001)

width of full arrow tail

length_includes_head: [True | False] (default: False)

True if head is to be counted in calculating the length.

head_width: float or None (default: 3*width)

total width of the full arrow head

head_length: float or None (default: 1.5 * head_width)

length of arrow head

shape: [‘full’, ‘left’, ‘right’] (default: ‘full’)

draw the left-half, right-half, or full arrow

overhang: float (default: 0)

fraction that the arrow is swept back (0 overhang means triangular shape). Can be negative or greater than one.

head_starts_at_zero: [True | False] (default: False)

if True, the head starts being drawn at coordinate 0 instead of ending at coordinate 0.

Other valid kwargs (inherited from Patch) are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

class matplotlib.patches.FancyArrowPatch(posA=None, posB=None, path=None, arrowstyle=u'simple', arrow_transmuter=None, connectionstyle=u'arc3', connector=None, patchA=None, patchB=None, shrinkA=2.0, shrinkB=2.0, mutation_scale=1.0, mutation_aspect=None, dpi_cor=1.0, **kwargs)

Bases: matplotlib.patches.Patch

A fancy arrow patch. It draws an arrow using the :class:ArrowStyle.

If posA and posB is given, a path connecting two point are created according to the connectionstyle. The path will be clipped with patchA and patchB and further shirnked by shrinkA and shrinkB. An arrow is drawn along this resulting path using the arrowstyle parameter. If path provided, an arrow is drawn along this path and patchA, patchB, shrinkA, and shrinkB are ignored.

The connectionstyle describes how posA and posB are connected. It can be an instance of the ConnectionStyle class (matplotlib.patches.ConnectionStlye) or a string of the connectionstyle name, with optional comma-separated attributes. The following connection styles are available.

Class	Name	Attrs
Angle	angle	angleA=90,angleB=0,rad=0.0
Angle3	angle3	angleA=90,angleB=0
Arc	arc	angleA=0,angleB=0,armA=None,armB=None,rad=0.0
Arc3	arc3	rad=0.0
Bar	bar	armA=0.0,armB=0.0,fraction=0.3,angle=None

The arrowstyle describes how the fancy arrow will be drawn. It can be string of the available arrowstyle names, with optional comma-separated attributes, or one of the ArrowStyle instance. The optional attributes are meant to be scaled with the mutation_scale. The following arrow styles are available.

Class	Name	Attrs
Curve	-	None
CurveB	->	head_length=0.4,head_width=0.2
BracketB	-[	widthB=1.0,lengthB=0.2,angleB=None
CurveFilledB	-|>	head_length=0.4,head_width=0.2
CurveA	<-	head_length=0.4,head_width=0.2
CurveAB	<->	head_length=0.4,head_width=0.2
CurveFilledA	<|-	head_length=0.4,head_width=0.2
CurveFilledAB	<|-|>	head_length=0.4,head_width=0.2
BracketA	]-	widthA=1.0,lengthA=0.2,angleA=None
BracketAB	]-[	widthA=1.0,lengthA=0.2,angleA=None,widthB=1.0,lengthB=0.2,angleB=None
Fancy	fancy	head_length=0.4,head_width=0.4,tail_width=0.4
Simple	simple	head_length=0.5,head_width=0.5,tail_width=0.2
Wedge	wedge	tail_width=0.3,shrink_factor=0.5
BarAB	|-|	widthA=1.0,angleA=None,widthB=1.0,angleB=None

mutation_scale : a value with which attributes of arrowstyle

(e.g., head_length) will be scaled. default=1.

mutation_aspect : The height of the rectangle will be

squeezed by this value before the mutation and the mutated box will be stretched by the inverse of it. default=None.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

draw(renderer)

get_arrowstyle()

Return the arrowstyle object

get_connectionstyle()

Return the ConnectionStyle instance

get_dpi_cor()

dpi_cor is currently used for linewidth-related things and shink factor. Mutation scale is not affected by this.

get_mutation_aspect()

Return the aspect ratio of the bbox mutation.

get_mutation_scale()

Return the mutation scale.

get_path()

return the path of the arrow in the data coordinate. Use get_path_in_displaycoord() method to retrieve the arrow path in the display coord.

get_path_in_displaycoord()

Return the mutated path of the arrow in the display coord

set_arrowstyle(arrowstyle=None, **kw)

Set the arrow style.

arrowstyle can be a string with arrowstyle name with optional

comma-separated attributes. Alternatively, the attrs can be provided as keywords.

set_arrowstyle(“Fancy,head_length=0.2”) set_arrowstyle(“fancy”, head_length=0.2)

Old attrs simply are forgotten.

Without argument (or with arrowstyle=None), return available box styles as a list of strings.

set_connectionstyle(connectionstyle, **kw)

Set the connection style.

connectionstyle can be a string with connectionstyle name with

optional comma-separated attributes. Alternatively, the attrs can be probided as keywords.

set_connectionstyle(“arc,angleA=0,armA=30,rad=10”) set_connectionstyle(“arc”, angleA=0,armA=30,rad=10)

Old attrs simply are forgotten.

Without argument (or with connectionstyle=None), return available styles as a list of strings.

set_dpi_cor(dpi_cor)

dpi_cor is currently used for linewidth-related things and shink factor. Mutation scale is not affected by this.

set_mutation_aspect(aspect)

Set the aspect ratio of the bbox mutation.

ACCEPTS: float

set_mutation_scale(scale)

Set the mutation scale.

ACCEPTS: float

set_patchA(patchA)

set the begin patch.

set_patchB(patchB)

set the begin patch

set_positions(posA, posB)

set the begin end end positions of the connecting path. Use current vlaue if None.

class matplotlib.patches.FancyBboxPatch(xy, width, height, boxstyle=u'round', bbox_transmuter=None, mutation_scale=1.0, mutation_aspect=None, **kwargs)

Bases: matplotlib.patches.Patch

Draw a fancy box around a rectangle with lower left at xy*=(*x, y) with specified width and height.

FancyBboxPatch class is similar to Rectangle class, but it draws a fancy box around the rectangle. The transformation of the rectangle box to the fancy box is delegated to the BoxTransmuterBase and its derived classes.

xy = lower left corner

width, height

boxstyle determines what kind of fancy box will be drawn. It can be a string of the style name with a comma separated attribute, or an instance of BoxStyle. Following box styles are available.

Class	Name	Attrs
Circle	circle	pad=0.3
DArrow	darrow	pad=0.3
LArrow	larrow	pad=0.3
RArrow	rarrow	pad=0.3
Round	round	pad=0.3,rounding_size=None
Round4	round4	pad=0.3,rounding_size=None
Roundtooth	roundtooth	pad=0.3,tooth_size=None
Sawtooth	sawtooth	pad=0.3,tooth_size=None
Square	square	pad=0.3

mutation_scale : a value with which attributes of boxstyle (e.g., pad) will be scaled. default=1.

mutation_aspect : The height of the rectangle will be squeezed by this value before the mutation and the mutated box will be stretched by the inverse of it. default=None.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

get_bbox()

get_boxstyle()

Return the boxstyle object

get_height()

Return the height of the rectangle

get_mutation_aspect()

Return the aspect ratio of the bbox mutation.

get_mutation_scale()

Return the mutation scale.

get_path()

Return the mutated path of the rectangle

get_width()

Return the width of the rectangle

get_x()

Return the left coord of the rectangle

get_y()

Return the bottom coord of the rectangle

set_bounds(*args)

Set the bounds of the rectangle: l,b,w,h

ACCEPTS: (left, bottom, width, height)

set_boxstyle(boxstyle=None, **kw)

Set the box style.

boxstyle can be a string with boxstyle name with optional comma-separated attributes. Alternatively, the attrs can be provided as keywords:

set_boxstyle("round,pad=0.2")
set_boxstyle("round", pad=0.2)

Old attrs simply are forgotten.

Without argument (or with boxstyle = None), it returns available box styles.

The following boxstyles are available:

Class	Name	Attrs
Circle	circle	pad=0.3
DArrow	darrow	pad=0.3
LArrow	larrow	pad=0.3
RArrow	rarrow	pad=0.3
Round	round	pad=0.3,rounding_size=None
Round4	round4	pad=0.3,rounding_size=None
Roundtooth	roundtooth	pad=0.3,tooth_size=None
Sawtooth	sawtooth	pad=0.3,tooth_size=None
Square	square	pad=0.3

ACCEPTS: [ ‘circle’ | ‘darrow’ | ‘larrow’ | ‘rarrow’ | ‘round’ | ‘round4’ | ‘roundtooth’ | ‘sawtooth’ | ‘square’ ]

set_height(h)

Set the width rectangle

ACCEPTS: float

set_mutation_aspect(aspect)

Set the aspect ratio of the bbox mutation.

ACCEPTS: float

set_mutation_scale(scale)

Set the mutation scale.

ACCEPTS: float

set_width(w)

Set the width rectangle

ACCEPTS: float

set_x(x)

Set the left coord of the rectangle

ACCEPTS: float

set_y(y)

Set the bottom coord of the rectangle

ACCEPTS: float

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	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

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).

draw(artist, renderer, *args, **kwargs)

Draw the Patch to the given renderer.

fill

return whether fill is set

get_aa()

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

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()

Return the edge color of the Patch.

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()

Return the face color of the Patch.

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. Will be one of [‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]

get_linewidth()

Return the line width in points.

get_ls()

Return the linestyle. Will be one of [‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]

get_lw()

Return the line width in points.

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)

set_aa(aa)

alias for set_antialiased

set_alpha(alpha)

Set the alpha tranparency of the patch.

ACCEPTS: float or None

set_antialiased(aa)

Set whether to use antialiased rendering

ACCEPTS: [True | False] or None for default

set_capstyle(s)

Set the patch capstyle

ACCEPTS: [‘butt’ | ‘round’ | ‘projecting’]

set_color(c)

Set both the edgecolor and the facecolor.

ACCEPTS: matplotlib color spec

See also

set_facecolor(), set_edgecolor()

For setting the edge or face color individually.

set_ec(color)

alias for set_edgecolor

set_edgecolor(color)

Set the patch edge color

ACCEPTS: mpl color spec, or None for default, or ‘none’ for no color

set_facecolor(color)

Set the patch face color

ACCEPTS: mpl color spec, or None for default, or ‘none’ for no color

set_fc(color)

alias for set_facecolor

set_fill(b)

Set whether to fill the patch

ACCEPTS: [True | False]

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.

ACCEPTS: [‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]

set_joinstyle(s)

Set the patch joinstyle

ACCEPTS: [‘miter’ | ‘round’ | ‘bevel’]

set_linestyle(ls)

Set the patch linestyle

ACCEPTS: [‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]

set_linewidth(w)

Set the patch linewidth in points

ACCEPTS: float or None for default

set_ls(ls)

alias for set_linestyle

set_lw(lw)

alias for set_linewidth

update_from(other)

Updates this Patch from the properties of other.

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

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

zorder = 1

class matplotlib.patches.PathPatch(path, **kwargs)

Bases: matplotlib.patches.Patch

A general polycurve path patch.

path is a matplotlib.path.Path object.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

See also

Patch

For additional kwargs

get_path()

class matplotlib.patches.Polygon(xy, closed=True, **kwargs)

Bases: matplotlib.patches.Patch

A general polygon patch.

xy is a numpy array with shape Nx2.

If closed is True, the polygon will be closed so the starting and ending points are the same.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

See also

Patch

For additional kwargs

get_closed()

Returns if the polygon is closed

Returns:

closed : bool

If the path is closed

get_path()

Get the path of the polygon

Returns:

path : Path

The Path object for the polygon

get_xy()

Get the vertices of the path

Returns:

vertices : numpy array

The coordinates of the vertices as a Nx2 ndarray.

set_closed(closed)

Set if the polygon is closed

Parameters:

closed : bool

True if the polygon is closed

set_xy(xy)

Set the vertices of the polygon

Parameters:

xy : numpy array or iterable of pairs

The coordinates of the vertices as a Nx2 ndarray or iterable of pairs.

xy

Set/get the vertices of the polygon. This property is provided for backward compatibility with matplotlib 0.91.x only. New code should use get_xy() and set_xy() instead.

class matplotlib.patches.Rectangle(xy, width, height, angle=0.0, **kwargs)

Bases: matplotlib.patches.Patch

Draw a rectangle with lower left at xy = (x, y) with specified width and height.

angle

rotation in degrees (anti-clockwise)

fill is a boolean indicating whether to fill the rectangle

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

contains(mouseevent)

get_bbox()

get_height()

Return the height of the rectangle

get_patch_transform()

get_path()

Return the vertices of the rectangle

get_width()

Return the width of the rectangle

get_x()

Return the left coord of the rectangle

get_xy()

Return the left and bottom coords of the rectangle

get_y()

Return the bottom coord of the rectangle

set_bounds(*args)

Set the bounds of the rectangle: l,b,w,h

ACCEPTS: (left, bottom, width, height)

set_height(h)

Set the width rectangle

ACCEPTS: float

set_width(w)

Set the width rectangle

ACCEPTS: float

set_x(x)

Set the left coord of the rectangle

ACCEPTS: float

set_xy(xy)

Set the left and bottom coords of the rectangle

ACCEPTS: 2-item sequence

set_y(y)

Set the bottom coord of the rectangle

ACCEPTS: float

xy

Return the left and bottom coords of the rectangle

class matplotlib.patches.RegularPolygon(xy, numVertices, radius=5, orientation=0, **kwargs)

Bases: matplotlib.patches.Patch

A regular polygon patch.

Constructor arguments:

xy

A length 2 tuple (x, y) of the center.

numVertices

the number of vertices.

radius

The distance from the center to each of the vertices.

orientation

rotates the polygon (in radians).

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

get_patch_transform()

get_path()

numvertices

orientation

radius

xy

class matplotlib.patches.Shadow(patch, ox, oy, props=None, **kwargs)

Bases: matplotlib.patches.Patch

Create a shadow of the given patch offset by ox, oy. props, if not None, is a patch property update dictionary. If None, the shadow will have have the same color as the face, but darkened.

kwargs are

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

draw(renderer)

get_patch_transform()

get_path()

class matplotlib.patches.Wedge(center, r, theta1, theta2, width=None, **kwargs)

Bases: matplotlib.patches.Patch

Wedge shaped patch.

Draw a wedge centered at x, y center with radius r that sweeps theta1 to theta2 (in degrees). If width is given, then a partial wedge is drawn from inner radius r - width to outer radius r.

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

get_path()

set_center(center)

set_radius(radius)

set_theta1(theta1)

set_theta2(theta2)

set_width(width)

class matplotlib.patches.YAArrow(figure, xytip, xybase, width=4, frac=0.1, headwidth=12, **kwargs)

Bases: matplotlib.patches.Patch

Yet another arrow class.

This is an arrow that is defined in display space and has a tip at x1, y1 and a base at x2, y2.

Constructor arguments:

xytip

(x, y) location of arrow tip

xybase

(x, y) location the arrow base mid point

figure

The Figure instance (fig.dpi)

width

The width of the arrow in points

frac

The fraction of the arrow length occupied by the head

headwidth

The width of the base of the arrow head in points

Valid kwargs are:

Property	Description
agg_filter	unknown
alpha	float or None
animated	[True | False]
antialiased or aa	[True | False] or None for default
axes	an Axes instance
capstyle	[‘butt’ | ‘round’ | ‘projecting’]
clip_box	a matplotlib.transforms.Bbox instance
clip_on	[True | False]
clip_path	[ (Path, Transform) | Patch | None ]
color	matplotlib color spec
contains	a callable function
edgecolor or ec	mpl color spec, or None for default, or ‘none’ for no color
facecolor or fc	mpl color spec, or None for default, or ‘none’ for no color
figure	a matplotlib.figure.Figure instance
fill	[True | False]
gid	an id string
hatch	[‘/’ | ‘\’ | ‘|’ | ‘-‘ | ‘+’ | ‘x’ | ‘o’ | ‘O’ | ‘.’ | ‘*’]
joinstyle	[‘miter’ | ‘round’ | ‘bevel’]
label	string or anything printable with ‘%s’ conversion.
linestyle or ls	[‘solid’ | ‘dashed’ | ‘dashdot’ | ‘dotted’]
linewidth or lw	float or None for default
lod	[True | False]
path_effects	unknown
picker	[None|float|boolean|callable]
rasterized	[True | False | None]
sketch_params	unknown
snap	unknown
transform	Transform instance
url	a url string
visible	[True | False]
zorder	any number

get_patch_transform()

get_path()

getpoints(x1, y1, x2, y2, k)

For line segment defined by (x1, y1) and (x2, y2) return the points on the line that is perpendicular to the line and intersects (x2, y2) and the distance from (x2, y2) of the returned points is k.

matplotlib.patches.bbox_artist(artist, renderer, props=None, fill=True)

This is a debug function to draw a rectangle around the bounding box returned by get_window_extent() of an artist, to test whether the artist is returning the correct bbox.

props is a dict of rectangle props with the additional property ‘pad’ that sets the padding around the bbox in points.

matplotlib.patches.draw_bbox(bbox, renderer, color=u'k', trans=None)

This is a debug function to draw a rectangle around the bounding box returned by get_window_extent() of an artist, to test whether the artist is returning the correct bbox.