【发布时间】:2016-02-16 11:50:48
【问题描述】:
这是我的代码
import os
import sys
import numpy as np
import scipy
from scipy.optimize import leastsq
def peval (inp_mat,p):
m0,m1,m2,m3,m4,m5,m6,m7 = p
out_mat = np.array(np.zeros(inp_mat.shape,dtype=np.float32))
mid = inp_mat.shape[0]/2
for xy in range(0,inp_mat.shape[0]):
if (xy<(inp_mat.shape[0]/2)):
out_mat[xy] = ( ( (inp_mat[xy+mid]*m0)+(inp_mat[xy]*m1)+ m2 ) /( (inp_mat[xy+mid]*m6)+(inp_mat[xy]*m7)+1 ) )
else:
out_mat[xy] = ( ( (inp_mat[xy]*m3)+(inp_mat[xy-mid]*m4)+ m5 ) /( (inp_mat[xy]*m6)+(inp_mat[xy-mid]*m7)+1 ) )
return np.array(out_mat)
def residuals(p, out_mat, inp_mat):
m0,m1,m2,m3,m4,m5,m6,m7 = p
err=np.array(np.zeros(inp_mat.shape,dtype=np.float32))
if (out_mat.shape == inp_mat.shape):
for xy in range(0,inp_mat.shape[0]):
err[xy] = err[xy]+ (out_mat[xy] -inp_mat[xy])
return np.array(err)
f = open('/media/anilil/Data/Datasets/repo/txt_op/vid.txt','r')
x = np.loadtxt(f,dtype=np.int16,comments='#',delimiter='\t')
nof = x.shape[0]/72 # Find the number of frames
x1 = x.reshape(-1,60,40)
x1_1= x1[0,:,:].flatten()
x1_2= x1[1,:,:].flatten()
x= []
y= []
for xy in range(1,50,1):
y.append(x1[xy,:,:].flatten())
x.append(x1[xy-1,:,:].flatten())
x=np.array(x,dtype=np.float32)
y=np.array(y,dtype=np.float32)
length = x1_1.shape#initail guess
p0 = np.array([1,1,1,1,1,1,1,1],dtype=np.float32)
abc=leastsq(residuals, p0,args=(y,x))
print ('Size of first matrix is '+str(x1_1.shape))
print ('Size of first matrix is '+str(x1_2.shape))
print ("Done with program")
我尝试在大多数地方添加 np.array 但没有用。 有人可以帮我吗?
这里的另一个问题是我是否通过将所有errorsnp.sum(err,axis=1) 相加来将残差()的输出作为单个值。还是保持原样?
当我在函数residuals() 中return np.sum(err,axis=1)。最初的猜测没有变化。它只是保持不变。
I.E 错误针对输入输出映射中的每个项目。还是整体错误?
输出
ValueError: object too deep for desired array
Traceback (most recent call last):
File "/media/anilil/Data/charm/mv_clean/.idea/nose_reduction_mpeg.py", line 49, in <module>
abc=leastsq(residuals, p0,args=(y,x))
File "/usr/lib/python2.7/dist-packages/scipy/optimize/minpack.py", line 378, in leastsq
gtol, maxfev, epsfcn, factor, diag)
minpack.error: Result from function call is not a proper array of floats.
【问题讨论】:
-
您能分享您正在使用的数据或至少其中的一部分吗?
-
添加了你想要的数据
标签: python numpy error-handling scipy mathematical-optimization