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我有一个复数的数据集,我希望能够找到最适合数据的参数。你可以使用Python中的scipy实现的leastsq来适合复杂数据中的数据吗?python scipy leastsq适合复数
例如,我的代码是这样的:
import cmath
from scipy.optimize import leastsq
def residuals(p,y,x):
L,Rs,R1,C=p
denominator=1+(x**2)*(C**2)*(R1**2)
sim=complex(Rs+R1/denominator,x*L-(R1**2)*x*C/denominator)
return(y-sim)
z=<read in data, store as complex number>
x0=np.array[1, 2, 3, 4]
res = leastsq(residuals,x0, args=(z,x))
然而,residuals
不喜欢和我的复数的工作,我得到的错误:
File "/tmp/tmp8_rHYR/___code___.py", line 63, in residuals
sim=complex(Rs+R1/denominator,x*L-(R1**_sage_const_2)*x*C/denominator)
File "expression.pyx", line 1071, in sage.symbolic.expression.Expression.__complex__ (sage/symbolic/expression.cpp:7112)
TypeError: unable to simplify to complex approximation
我猜我只需要使用浮动/双打而不是复杂的数字。在那种情况下,我怎样才能分别评估真实和复杂的零件,然后将它们归并为一个单一的错误指标,以便返回residuals
?