How to Draw Vertical Lines on a Time Series Plot in Python?

Drawing Vertical Lines on a Plot

To overlay vertical lines on a time series plot, indicating specific time indices, there are a few approaches available.

Using plt.axvline

The simplest method is to use plt.axvline, which draws a vertical line at the specified x-coordinate. Simply provide the coordinate:

import matplotlib.pyplot as plt

plt.axvline(x=0.22058956)
plt.axvline(x=0.33088437)
plt.axvline(x=2.20589566)

Using a Loop with plt.axvline

Alternatively, you can iterate through a list of coordinates to draw multiple vertical lines:

xcoords = [0.22058956, 0.33088437, 2.20589566]
for xc in xcoords:
    plt.axvline(x=xc)

Both methods allow for customization of line properties such as color, style, and width using the corresponding keyword arguments.

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