matplotlib.pyplot.axline#

matplotlib.pyplot.axline(xy1,xy2=None,*,slope=None,**kwargs)[source]#

Add an infinitely long straight line.

The line can be defined either by two pointsxy1 andxy2, orby one pointxy1 and aslope.

This draws a straight line "on the screen", regardless of the x and yscales, and is thus also suitable for drawing exponential decays insemilog plots, power laws in loglog plots, etc. However,slopeshould only be used with linear scales; It has no clear meaning forall other scales, and thus the behavior is undefined. Please specifythe line using the pointsxy1,xy2 for non-linear scales.

Thetransform keyword argument only applies to the pointsxy1,xy2. Theslope (if given) is always in data coordinates. This canbe used e.g. withax.transAxes for drawing grid lines with a fixedslope.

Parameters:

xy1, xy2(float, float)

Points for the line to pass through.Eitherxy2 orslope has to be given.

slopefloat, optional

The slope of the line. Eitherxy2 orslope has to be given.

Returns:

AxLine

Other Parameters:

**kwargs

Valid kwargs areLine2D properties

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	float or None
animated	bool
antialiased oraa	bool
clip_box	BboxBase or None
clip_on	bool
clip_path	Patch or (Path, Transform) or None
color orc	color
dash_capstyle	CapStyle or {'butt', 'projecting', 'round'}
dash_joinstyle	JoinStyle or {'miter', 'round', 'bevel'}
dashes	sequence of floats (on/off ink in points) or (None, None)
data	(2, N) array or two 1D arrays
drawstyle ords	{'default', 'steps', 'steps-pre', 'steps-mid', 'steps-post'}, default: 'default'
figure	Figure orSubFigure
fillstyle	{'full', 'left', 'right', 'bottom', 'top', 'none'}
gapcolor	color or None
gid	str
in_layout	bool
label	object
linestyle orls	{'-', '--', '-.', ':', '', (offset, on-off-seq), ...}
linewidth orlw	float
marker	marker style string,Path orMarkerStyle
markeredgecolor ormec	color
markeredgewidth ormew	float
markerfacecolor ormfc	color
markerfacecoloralt ormfcalt	color
markersize orms	float
markevery	None or int or (int, int) or slice or list[int] or float or (float, float) or list[bool]
mouseover	bool
path_effects	list ofAbstractPathEffect
picker	float or callable[[Artist, Event], tuple[bool, dict]]
pickradius	float
rasterized	bool
sketch_params	(scale: float, length: float, randomness: float)
snap	bool or None
solid_capstyle	CapStyle or {'butt', 'projecting', 'round'}
solid_joinstyle	JoinStyle or {'miter', 'round', 'bevel'}
transform	unknown
url	str
visible	bool
xdata	1D array
ydata	1D array
zorder	float

See also

axhline

for horizontal lines

axvline

for vertical lines

Notes

Note

This is thepyplot wrapper foraxes.Axes.axline.

Examples

Draw a thick red line passing through (0, 0) and (1, 1):

>>>axline((0,0),(1,1),linewidth=4,color='r')

Examples usingmatplotlib.pyplot.axline#

Infinite lines

Infinite lines

Anscombe's quartet

Anscombe's quartet