How can I format ticks in Matplotlib?

How can I format ticks in Matplotlib?

You can format ticks in Matplotlib using the xticks and yticks functions, or by using FuncFormatter.

Can you give me an example of using FuncFormatter?

Sure! Here's a simple example:

import matplotlib.pyplot as plt
from matplotlib.ticker import FuncFormatter

def currency(x, pos):
    return f'${x:.2f}'

fig, ax = plt.subplots()
ax.plot([1, 2, 3], [1, 4, 9])
ax.yaxis.set_major_formatter(FuncFormatter(currency))
plt.show()

What if I want to format the x-axis instead?

You can use the same FuncFormatter for the x-axis by applying it to ax.xaxis.set_major_formatter(FuncFormatter(currency)) instead.

Are there other ways to format ticks?

Yes, you can also use ScalarFormatter, LogFormatter, or even customize tick labels directly with set_xticklabels and set_yticklabels.