Visualization with three axes

threeaxes.md

Three axes visualizations

%matplotlib inline
import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0, 3.1415)
y1 = np.sin(x)
y2 = np.cos(x)
y3 = np.tan(x)

# cosmetics
fontsize = 15
direction = {'direction':'in', 'which':'both', 'right':True, 'top':True, 'size':7}


fig, ax1 = plt.subplots(figsize=(10, 8))

# first curve
ax1.plot(x, y1, color='b')
ax1.set_ylabel(r'sin(x)', color='b', fontsize=fontsize)
ax1.spines['left'].set_color('b')
ax1.tick_params(axis='y', colors='b', labelsize=fontsize, **direction)
ax1.tick_params(axis='x', labelsize=fontsize, **direction) # x- has a different color
ax1.set_xlabel('x', fontsize=fontsize)

# second curve
ax2 = ax1.twinx()
ax2.plot(x, y2, color='r', ls='--')
ax2.set_ylabel('cos(x)', color='r', fontsize=fontsize)
ax2.tick_params(axis='both', colors='r', labelsize=fontsize, **direction)
ax2.spines['right'].set_color('r')


# third curve
ax3 = ax1.twinx()
ax3.plot(x, y3, color='k', ls='-.')
ax3.set_ylabel(r'tan(x)', color='k', fontsize=fontsize)
ax3.tick_params(axis='both', colors='k', labelsize=fontsize, **direction)
ax3.spines['right'].set_color('k')
ax3.spines['right'].set_position(('outward', 90)) 

# save with 'fig.savefig'

You will get something like: