NumPy 與 Matplotlib 畫正弦波

one_sin.py

import numpy as np
import matplotlib.pyplot as plt

freq = 10         # 頻率
stop = .25        # 取樣範圍為 0 ~ stop
sample_rate = 800 # 取樣率，單位 x 取樣幾次

x = np.linspace(0, stop, int(stop * sample_rate), endpoint = False)
y = np.sin(freq * 2 * np.pi * x) 

plt.plot(x, y)
plt.show()