# in DBR 6.4 and below, uncomment the line below

# %matplotlib inline

import numpy as np

import matplotlib.pyplot as plt

x = np.linspace(0, 2*np.pi, 50)

y = np.sin(x)

y2 = y + 0.1 * np.random.normal(size=x.shape)

fig, ax = plt.subplots()

ax.plot(x, y, 'k--')

ax.plot(x, y2, 'ro')

# set ticks and tick labels

ax.set_xlim((0, 2*np.pi))

ax.set_xticks([0, np.pi, 2*np.pi])

ax.set_xticklabels(['0', '$\pi$','2$\pi$'])

ax.set_ylim((-1.5, 1.5))

ax.set_yticks([-1, 0, 1])

# Only draw spine between the y-ticks

ax.spines['left'].set_bounds(-1, 1)

# Hide the right and top spines

ax.spines['right'].set_visible(False)

ax.spines['top'].set_visible(False)

# Only show ticks on the left and bottom spines

ax.yaxis.set_ticks_position('left')

ax.xaxis.set_ticks_position('bottom')