'''
=========================================
Labeling ticks using engineering notation
=========================================

Demo to show use of the engineering Formatter.
'''

import matplotlib.pyplot as plt
import numpy as np

from matplotlib.ticker import EngFormatter

prng = np.random.RandomState(123)

fig, ax = plt.subplots()
ax.set_xscale('log')
formatter = EngFormatter(unit='Hz')
ax.xaxis.set_major_formatter(formatter)

xs = np.logspace(1, 9, 100)
ys = (0.8 + 0.4 * prng.uniform(size=100)) * np.log10(xs)**2
ax.plot(xs, ys)

plt.show() 

• 2023/03/27 Ver=1.03 Python 3.11.2 で確認
• 2020/10/29 Ver=1.01 Python 3.7.8 で確認
• 2018/11/23 Ver=1.01 初版リリース

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