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To create plots that share a common axis (visually) you can set the hspace between the subplots to zero. Passing sharex=True when creating the subplots will automatically turn off all x ticks and labels except those on the bottom axis.
In this example the plots share a common x axis but you can follow the same logic to supply a common y axis.
import matplotlib.pyplot as pltimport numpy as npt = np.arange(0.0, 2.0, 0.01)s1 = np.sin(2 * np.pi * t)s2 = np.exp(-t)s3 = s1 * s2fig, axs = plt.subplots(3, 1, sharex=True)# Remove horizontal space between axesfig.subplots_adjust(hspace=0)# Plot each graph, and manually set the y tick valuesaxs[0].plot(t, s1)axs[0].set_yticks(np.arange(-0.9, 1.0, 0.4))axs[0].set_ylim(-1, 1)axs[1].plot(t, s2)axs[1].set_yticks(np.arange(0.1, 1.0, 0.2))axs[1].set_ylim(0, 1)axs[2].plot(t, s3)axs[2].set_yticks(np.arange(-0.9, 1.0, 0.4))axs[2].set_ylim(-1, 1)plt.show()
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