我有一个1和0的数组，所以基本上我有一个方波，我想对其进行平滑。总变量是我正在调用Savitzky Golay函数进行过滤的数据，但我不断收到此错误：
File "<ipython-input-45-d4d2478bab0e>", line 1, in <module>
Zf = sgolay2d( total, window_size=29, order=3)
File "<ipython-input-44-545942e8da4f>", line 34, in sgolay2d
new_shape = z.shape[0] + 2*half_size, z.shape[1] + 2*half_size
AttributeError: 'list' object has no attribute 'shape'
我的数据是：
total = [0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1]
'''''''''''''''''''''''''''
代码包含定义函数并调用它并对其进行绘制。但是，它不接受数组的格式（我认为）！有提示吗？
def sgolay2d ( z, window_size, order, derivative=None):
"""
"""
# number of terms in the polynomial expression
n_terms = ( order + 1 ) * ( order + 2) / 2.0
if window_size % 2 == 0:
raise ValueError('window_size must be odd')
if window_size**2 < n_terms:
raise ValueError('order is too high for the window size')
half_size = window_size // 2
# exponents of the polynomial.
# p(x,y) = a0 + a1*x + a2*y + a3*x^2 + a4*y^2 + a5*x*y + ...
# this line gives a list of two item tuple. Each tuple contains
# the exponents of the k-th term. First element of tuple is for x
# second element for y.
# Ex. exps = [(0,0), (1,0), (0,1), (2,0), (1,1), (0,2), ...]
exps = [ (k-n, n) for k in range(order+1) for n in range(k+1) ]
# coordinates of points
ind = np.arange(-half_size, half_size+1, dtype=np.float64)
dx = np.repeat( ind, window_size )
dy = np.tile( ind, [window_size, 1]).reshape(window_size**2, )
# build matrix of system of equation
A = np.empty( (window_size**2, len(exps)) )
for i, exp in enumerate( exps ):
A[:,i] = (dx**exp[0]) * (dy**exp[1])
# pad input array with appropriate values at the four borders
new_shape = z.shape[0] + 2*half_size, z.shape[1] + 2*half_size
Z = np.zeros( (new_shape) )
# top band
band = z[0, :]
Z[:half_size, half_size:-half_size] = band - np.abs( np.flipud(
z[1:half_size+1, :] ) - band )
# bottom band
band = z[-1, :]
Z[-half_size:, half_size:-half_size] = band + np.abs( np.flipud( z[-
half_size-1:-1, :] ) -band )
# left band
band = np.tile( z[:,0].reshape(-1,1), [1,half_size])
Z[half_size:-half_size, :half_size] = band - np.abs( np.fliplr( z[:,
1:half_size+1] ) - band )
# right band
band = np.tile( z[:,-1].reshape(-1,1), [1,half_size] )
Z[half_size:-half_size, -half_size:] = band + np.abs( np.fliplr( z[:,
-half_size-1:-1] ) - band )
# central band
Z[half_size:-half_size, half_size:-half_size] = z
# top left corner
band = z[0,0]
Z[:half_size,:half_size] = band - np.abs(
np.flipud(np.fliplr(z[1:half_size+1,1:half_size+1]) ) - band )
# bottom right corner
band = z[-1,-1]
Z[-half_size:,-half_size:] = band + np.abs( np.flipud(np.fliplr(z[-
half_size-1:-1,-half_size-1:-1]) ) - band )
# top right corner
band = Z[half_size,-half_size:]
Z[:half_size,-half_size:] = band - np.abs(
np.flipud(Z[half_size+1:2*half_size+1,-half_size:]) - band )
# bottom left corner
band = Z[-half_size:,half_size].reshape(-1,1)
Z[-half_size:,:half_size] = band - np.abs( np.fliplr(Z[-half_size:,
half_size+1:2*half_size+1]) - band )
# solve system and convolve
if derivative == None:
m = np.linalg.pinv(A)[0].reshape((window_size, -1))
return scipy.signal.fftconvolve(Z, m, mode='valid')
elif derivative == 'col':
c = np.linalg.pinv(A)[1].reshape((window_size, -1))
return scipy.signal.fftconvolve(Z, -c, mode='valid')
elif derivative == 'row':
r = np.linalg.pinv(A)[2].reshape((window_size, -1))
return scipy.signal.fftconvolve(Z, -r, mode='valid')
elif derivative == 'both':
c = np.linalg.pinv(A)[1].reshape((window_size, -1))
r = np.linalg.pinv(A)[2].reshape((window_size, -1))
return scipy.signal.fftconvolve(Z, -r, mode='valid'),
scipy.signal.fftconvolve(Z, -c, mode='valid')
##########
Zf = sgolay2d( total, window_size=29, order=3)
plt.plot(total)
plt.ylabel('amp')
plt.xlabel('Frames')
plt.show()