How to set xticks in subplots

There are two ways:

  1. Use the axes methods of the subplot object (e.g. ax.set_xticks and ax.set_xticklabels) or
  2. Use to set the current axes for the pyplot state machine (i.e. the plt interface).

As an example (this also illustrates using setp to change the properties of all of the subplots):

import matplotlib.pyplot as plt

fig, axes = plt.subplots(nrows=3, ncols=4)

# Set the ticks and ticklabels for all axes
plt.setp(axes, xticks=[0.1, 0.5, 0.9], xticklabels=['a', 'b', 'c'],
        yticks=[1, 2, 3])

# Use the pyplot interface to change just one subplot...[1, 1])
plt.xticks(range(3), ['A', 'Big', 'Cat'], color="red")


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