# matplotlib.axes.Axes.set_ylim¶

Axes.set_ylim(self, bottom=None, top=None, emit=True, auto=False, *, ymin=None, ymax=None)

Set the y-axis view limits.

Parameters: bottomfloat, optionalThe bottom ylim in data coordinates. Passing None leaves the limit unchanged. The bottom and top ylims may also be passed as the tuple (bottom, top) as the first positional argument (or as the bottom keyword argument). topfloat, optionalThe top ylim in data coordinates. Passing None leaves the limit unchanged. emitbool, default: TrueWhether to notify observers of limit change. autobool or None, default: FalseWhether to turn on autoscaling of the y-axis. True turns on, False turns off, None leaves unchanged. ymin, ymaxfloat, optionalThey are equivalent to bottom and top respectively, and it is an error to pass both ymin and bottom or ymax and top. bottom, top(float, float)The new y-axis limits in data coordinates.

Notes

The bottom value may be greater than the top value, in which case the y-axis values will decrease from bottom to top.

Examples

>>> set_ylim(bottom, top)
>>> set_ylim((bottom, top))
>>> bottom, top = set_ylim(bottom, top)


One limit may be left unchanged.

>>> set_ylim(top=top_lim)


Limits may be passed in reverse order to flip the direction of the y-axis. For example, suppose y represents depth of the ocean in m. The y-axis limits might be set like the following so 5000 m depth is at the bottom of the plot and the surface, 0 m, is at the top.

>>> set_ylim(5000, 0)