Matplotlib

Plot data — waveforms, sensor logs, frequency responses — in a few lines.

Easy

import matplotlib.pyplot as plt

plt.plot(t, signal, label="50 Hz")
plt.xlabel("Time (s)")
plt.ylabel("Voltage (V)")
plt.legend()
plt.grid(True)
plt.show()

Use plt.semilogx for Bode plots and plt.subplots to show several graphs together. Always label axes with units.

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