[英]python isn't plotting the “tangent” function correctly
我试图在Python中将一般切线函数绘制到matplotlib上但是它出错了。
我想要绘制的函数是:$$ f(x)=一个tan(\\ frac {2 \\ pi} {\\ lambda} x - \\ phi)$$
import numpy as np
import math
import matplotlib.pyplot as plt
import tkinter
f = lambda x, A, lambda_, phi: A * math.sin( ((2 * math.pi) / lambda_) * x - phi)
g = lambda x, A, lambda_, phi: A * math.cos( ((2 * math.pi) / lambda_) * x - phi)
h = lambda x, A, lambda_, phi: f(x, A, lambda_, phi) / g(x, A, lambda_, phi)
def generate_graph(A, lambda_, Phi):
plt.figure()
x = np.arange(-.95, .95, 0.005)
#plt.plot(x, [f(k, A, lambda_, Phi) for k in x], color='red')
#plt.plot(x, [g(k, A, lambda_, Phi) for k in x], color='blue')
plt.plt(x, [h(k, A, lambda_, Phi) for k in x], color='green')
plt.show()
A = 1 #amplitude
lambda_ = 3 #wavelength
Phi = 0 #phase shift
generate_graph(A, lambda_, Phi)
它应该看起来像这样:
但最终看起来像这样:
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