| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： oqXs2F
function [G5]=fun(x); []\=(Uc;
syms n1 n2 k1 k2 d; \& KfIh8
[subwave,nsub]=textread('subout.txt','%f %f'); qHU=X"rn
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); w &b?ze{
[p,q]=size(subwave); >EVY,
for j=1:p; d=*&=r0!C{
wavel(j)=subwave(j,1); "8BZj;yS
n(j)=n1+n2/((wavel(j))^2); "DpgX8lG_
k(j)=k1*exp(k2/wavel(j)); <i!:{'%
N(j)=n(j)-i*k(j); $,s"c(pv[,
phase(j)=2*pi*N(j)*d/wavel(j); p+ki1! Ed
ns(j)=nsub(j,1); q' % cVM
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); #9's^}i
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); ZcP/rT3{^
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); 1kX>sajp~
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; OG!+p}yD]
t1(j)=ts(j)*T(j); x_k @hGSC
tf(j)=filmtran(j,1)/100; aR c2#:~;
difference(j)=(t1(j)-tf(j))^2;
M%aA1!@/
end Klv~#9Si
G=symsum(difference(j),1,401); 2k}8` P;
G1=subs(G,n1,sym('x(1)')); Z%_m<Nf8T
G2=subs(G1,n2,sym('x(2)')); oh @|*RU
G3=subs(G2,k1,sym('x(3)')); n0T>sE -9
G4=subs(G3,k2,sym('x(4)')); RaX :&PE
G5=subs(G4,d,sym('x(5)')); ,cF
$_7M
>3,t`Z :
MlVVST
01br l^5K
在matlab下运行 +eIX {J\s
>> options=optimset('tolfun',1e-8,'tolx',1e-8); ]ssX,1#Xh
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); DO5H(a
kJfMTfl,
Iu=n $H
结果出错如下： ~4}'R _
Wh7}G
??? Conversion to double from sym is not possible. 8s@k0T<O
Error in ==> fminsearch at 175 2Jl$/W 3
fv(:,1) = funfcn(x,varargin{:}); IT5a/;J
v;_k*y[VV$
哪位高手给看看 BT3X7Cx
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