如何解决只有大小为 1 的数组可以转换为 Python 标量:Integrate.quad Vs Integrate.quadrature
我正在尝试计算一个积分。当我使用函数 scipy.integrate.quad 时,代码运行良好。但是,当我使用 scipy.integrate.quadrature(我需要使用 this 或 fixed.quad 方法)时,它返回“只有大小为 1 的数组可以转换为 Python 标量”错误。我该怎么办?
我的代码
import cmath as c
import math as m
import numpy as np
import scipy as sp
import os
import csv
import time
import scipy.integrate as integrate
from scipy import special
k = 0.1
def solnum(x,chi,y):
Bk = ((2*abs(k))**(3/2))*((1+(1.5*abs(k))))*(m.gamma((1/(2*abs(k)))+(3/4))/m.gamma((1/(2*abs(k)))-(3/4)))
C = (chi/(2*m.sqrt(m.pi)))
R1 = (1/(1+(y**2)))
R2 = (((k**2)*(-((chi**2)*((x-y)**2))/4))-(m.sqrt(1+((k**2)*(-((chi**2)*((x-y)**2))/4)**2))))/(k**2 - 1)
R3 = ((((m.sqrt(1+((k**2)*(-((chi**2)*((x-y)**2))/4)**2)))) + ((k*(-((chi**2)*((x-y)**2))/4))))**(1/k))
sn = (C*Bk*R1*R2*R3)
return sn
def g(x,chi):
f1 = lambda y: solnum(x,y)
f2 = integrate.quadrature(f1,-200,200)
return f2[0]
print(g(0.,0.05)) #for instance
错误信息:
Traceback (most recent call last):
File "c:/Users/pwadmin/Google Drive/Pós-Doc/Py2/Completão/cacete de agulha.py",line 34,in <module>
print(g(0.,0.05))
File "c:/Users/pwadmin/Google Drive/Pós-Doc/Py2/Completão/cacete de agulha.py",line 32,in g
f2 = integrate.quadrature(f1,200)
File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\integrate\_quadrature.py",line 238,in quadrature
newval = fixed_quad(vfunc,a,b,(),n)[0]
File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\integrate\_quadrature.py",line 119,in fixed_quad
return (b-a)/2.0 * np.sum(w*func(y,*args),axis=-1),None
File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\integrate\_quadrature.py",line 149,in vfunc
return func(x,*args)
File "c:/Users/pwadmin/Google Drive/Pós-Doc/Py2/Completão/cacete de agulha.py",line 31,in <lambda>
f1 = lambda y: solnum(y,x,chi)
File "c:/Users/pwadmin/Google Drive/Pós-Doc/Py2/Completão/cacete de agulha.py",line 22,in solnum
R2 = (((k**2)*(-((chi**2)*((x-y)**2))/4))-(m.sqrt(1+((k**2)*(-((chi**2)*((x-y)**2))/4)**2))))/(k**2 - 1)
TypeError: only size-1 arrays can be converted to Python scalars
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