Solid cap style

An example demoing the solide cap style in matplotlib.

import numpy as np
import matplotlib.pyplot as plt

size = 256, 16
dpi = 72.0
figsize = size[0] / float(dpi), size[1] / float(dpi)
fig = plt.figure(figsize=figsize, dpi=dpi)
fig.patch.set_alpha(0)
plt.axes([0, 0, 1, 1], frameon=False)

plt.plot(np.arange(4), np.ones(4), color="blue", linewidth=8, solid_capstyle="butt")

plt.plot(
    5 + np.arange(4), np.ones(4), color="blue", linewidth=8, solid_capstyle="round"
)

plt.plot(
    10 + np.arange(4),
    np.ones(4),
    color="blue",
    linewidth=8,
    solid_capstyle="projecting",
)

plt.xlim(0, 14)
plt.xticks([])
plt.yticks([])

plt.show()