You are reading documentation for the unreleased version of Matplotlib. Try searching for the released version of this page instead?
Applications are open for the 2018 John Hunter Matplotlib Summer Fellowship. Apply now!
Version 2.2.2.post1766+g38476fd23
matplotlib
Fork me on GitHub

matplotlib.axes.Axes.format_xdata

Axes.format_xdata(x)

Return x string formatted. This function will use the attribute self.fmt_xdata if it is callable, else will fall back on the xaxis major formatter