"""
=========
Stem Plot
=========

Stem plot plots vertical lines from baseline to the y-coordinate
Plotting cosine(x) w.r.t x, using '-.' as the pattern
for plotting vertical lines
"""
import matplotlib.pyplot as plt
import numpy as np

# returns 10 evenly spaced samples from 0.1 to 2*PI
x = np.linspace(0.1, 2 * np.pi, 10)

markerline, stemlines, baseline = plt.stem(x, np.cos(x), '-.')

# setting property of baseline with color red and linewidth 2
plt.setp(baseline, color='r', linewidth=2)

plt.show()

#############################
# This example makes use of:
# * :meth:`matplotlib.axes.Axes.stem`