matplotlib.axes.Axes.axhline  
Axes.axhline(self, y=0, xmin=0, xmax=1, **kwargs) [source]
 
Add a horizontal line across the axis.    
Parameters:

 
y : scalar, optional, default: 0  
y position in data coordinates of the horizontal line.  
xmin : scalar, optional, default: 0  
Should be between 0 and 1, 0 being the far left of the plot, 1 the far right of the plot.  
xmax : scalar, optional, default: 1  
Should be between 0 and 1, 0 being the far left of the plot, 1 the far right of the plot.     
Returns:

 
line : Line2D     
Other Parameters:

 **kwargs 
Valid kwargs 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 float  
animated bool  

antialiased or aa bool  
clip_box Bbox  
clip_on bool  
clip_path [(Path, Transform) | Patch | None]  

color or c color  
contains callable  
dash_capstyle {'butt', 'round', 'projecting'}  
dash_joinstyle {'miter', 'round', 'bevel'}  
dashes sequence of floats (on/off ink in points) or (None, None)  

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  

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)  
path_effects AbstractPathEffect  
picker float or callable[[Artist, Event], Tuple[bool, dict]]  
pickradius float  
rasterized bool or None  
sketch_params (scale: float, length: float, randomness: float)  
snap bool or None  
solid_capstyle {'butt', 'round', 'projecting'}  
solid_joinstyle {'miter', 'round', 'bevel'}  
transform matplotlib.transforms.Transform  
url str  
visible bool  
xdata 1D array  
ydata 1D array  
zorder float         See also  
hlines
 Add horizontal lines in data coordinates. 
axhspan
 Add a horizontal span (rectangle) across the axis.   Examples  
draw a thick red hline at 'y' = 0 that spans the xrange: >>> axhline(linewidth=4, color='r')
  
draw a default hline at 'y' = 1 that spans the xrange: >>> axhline(y=1)
  
draw a default hline at 'y' = .5 that spans the middle half of the xrange: >>> axhline(y=.5, xmin=0.25, xmax=0.75)
   
 Examples using matplotlib.axes.Axes.axhline
 
  Using span_where  

  Colors in the default property cycle  


    
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