matplotlib.pyplot.axvspan

matplotlib.pyplot.axvspan(xmin, xmax, ymin=0, ymax=1, **kwargs)

Add a vertical span (rectangle) across the axes.

The rectangle spans from xmin to xmax horizontally, and, by default, the whole y-axis vertically. The y-span can be set using ymin (default: 0) and ymax (default: 1) which are in axis units; e.g. ymin = 0.5 always refers to the middle of the y-axis regardless of the limits set by set_ylim.

Parameters:

xminfloat

Lower x-coordinate of the span, in data units.

xmaxfloat

Upper x-coordinate of the span, in data units.

yminfloat, default: 0

Lower y-coordinate of the span, in y-axis units (0-1).

ymaxfloat, default: 1

Upper y-coordinate of the span, in y-axis units (0-1).

Returns:

Polygon

Vertical span (rectangle) from (xmin, ymin) to (xmax, ymax).

Other Parameters:

**kwargsPolygon properties

%(Polygon)s

See also

axhspan

Add a horizontal span across the axes.

Examples

Draw a vertical, green, translucent rectangle from x = 1.25 to x = 1.55 that spans the yrange of the axes.

>>> axvspan(1.25, 1.55, facecolor='g', alpha=0.5)

Examples using matplotlib.pyplot.axvspan