python - How do you plot a vertical line on a time series plot in Pandas?

Question

• How do you plot a vertical line (vlines) in a Pandas series plot?
• I am using Pandas to plot rolling means, etc., and would like to mark important positions with a vertical line.
• Is it possible to use vlines, or something similar, to accomplish this?
• In this case, the x axis is datetime.

Answer 1

plt.axvline(x_position)

It takes the standard plot formatting options (linestlye, color, ect)

(doc)

If you have a reference to your axes object:

ax.axvline(x, color='k', linestyle='--')