Use ScaleFormatter for plot scaling

[mhostetter]

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

# Example data
x = [1, 2, 3, 4, 5]
y = [1000, 2000, 3000, 4000, 5000]

# Define a formatter function
def scale_formatter(value, tick_number):
    return f'{value / 1000:.1f}'

# Create the plot
fig, ax = plt.subplots()
ax.plot(x, y)

# Apply the formatter to the y-axis
ax.yaxis.set_major_formatter(FuncFormatter(scale_formatter))

# Add labels
ax.set_xlabel("X-axis")
ax.set_ylabel("Y-axis (scaled)")

plt.show()