matplotlib.axes.Axes.arrow

Axes.arrow(x, y, dx, dy, **kwargs)

Add an arrow to the axes.

Draws arrow on specified axis from (x, y) to (x + dx, y + dy). Uses FancyArrow patch to construct the arrow.

Parameters:	x : float X-coordinate of the arrow base y : float Y-coordinate of the arrow base dx : float Length of arrow along x-coordinate dy : float Length of arrow along y-coordinate
Returns:	a : FancyArrow patches.FancyArrow object
Other Parameters:
	Optional kwargs (inherited from FancyArrow patch) control the arrow construction and properties: 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 :class:`Patch`) are: Property Description agg_filter unknown alpha float or None animated [True | False] antialiased or aa [True | False] or None for default 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, None, ‘none’, or ‘auto’ 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’ | (offset, on-off-dash-seq) | '-' | '--' | '-.' | ':' | 'None' | ' ' | ''] linewidth or lw float or None for default 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

Notes

The resulting arrow is affected by the axes aspect ratio and limits. This may produce an arrow whose head is not square with its stem. To create an arrow whose head is square with its stem, use annotate() for example:

ax.annotate("", xy=(0.5, 0.5), xytext=(0, 0),
    arrowprops=dict(arrowstyle="->"))