matplotlib.axes.Axes.axvline

Axes.axvline(x=0, ymin=0, ymax=1, **kwargs)[source]

Add a vertical line across the Axes.

Parameters
xfloat, default: 0

x position in data coordinates of the vertical line.

yminfloat, default: 0

Should be between 0 and 1, 0 being the bottom of the plot, 1 the top of the plot.

ymaxfloat, default: 1

Should be between 0 and 1, 0 being the bottom of the plot, 1 the top of the plot.

Returns
Line2D
Other Parameters
**kwargs

Valid keyword arguments are Line2D properties, with the exception of 'transform':

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

scalar or None

animated

bool

antialiased or aa

bool

clip_box

Bbox

clip_on

bool

clip_path

Patch or (Path, Transform) or None

color or c

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 or ds

{'default', 'steps', 'steps-pre', 'steps-mid', 'steps-post'}, default: 'default'

figure

Figure

fillstyle

{'full', 'left', 'right', 'bottom', 'top', 'none'}

gid

str

in_layout

bool

label

object

linestyle or ls

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

linewidth or lw

float

marker

marker style string, Path or MarkerStyle

markeredgecolor or mec

color

markeredgewidth or mew

float

markerfacecolor or mfc

color

markerfacecoloralt or mfcalt

color

markersize or ms

float

markevery

None or int or (int, int) or slice or list[int] or float or (float, float) or list[bool]

path_effects

AbstractPathEffect

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

vlines

Add vertical lines in data coordinates.

axvspan

Add a vertical span (rectangle) across the axis.

axline

Add a line with an arbitrary slope.

Examples

  • draw a thick red vline at x = 0 that spans the yrange:

    >>> axvline(linewidth=4, color='r')
    
  • draw a default vline at x = 1 that spans the yrange:

    >>> axvline(x=1)
    
  • draw a default vline at x = .5 that spans the middle half of the yrange:

    >>> axvline(x=.5, ymin=0.25, ymax=0.75)