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我收到以下错误,当我绘制信号的FFT。该代码从.txt文件中读取信号样本。 类型错误:无法从D(“S17”)投阵列数据,根据规则“安全”蟒蛇FFT图“式的错误”
#%% Import libraries
import numpy as np
from scipy import signal
from scipy import fft,log10
from scipy import ifft
import matplotlib.pyplot as plt
import scipy.fftpack
#%% Import signal
text_file = open("sample.txt", "r")
a=text_file.readlines()
plt.figure(1)
plt.plot(a)
fs=1000
t=np.arange(0,(len(a)))/float(fs)
plt.figure(201)
plt.plot(t,a)
plt.title('Signal')
plt.show()
#%% Plot FFT
n=len(a) # Number of samples
k=np.arange(n)
T=n/float(fs) # Sample spacing
frq=k/T
frq = k/T # two sides frequency range
frq = frq[range(n/2)] # one side frequency range
Y = np.fft.fft(a)/n # fft computing and normalization
Y = Y[range(n/2)]
plt.figure(203)
plt.plot(frq,np.abs(Y),'r') # plotting the spectrum
plt.show()
没有错误是指什么前行? –
文件 “C:\ Python27 \ LIB \站点包\ numpy的\ FFT \ fftpack.py”,行79,在_raw_fft R = work_function(一,wsave) –
哪*您*代码行? –