| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： 4e d+'-"m
function [G5]=fun(x); ^Z7])arA
syms n1 n2 k1 k2 d; kN9pl ^2
[subwave,nsub]=textread('subout.txt','%f %f'); ?pdvFM
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); O HeVm-VC
[p,q]=size(subwave); Gd$odKtI
for j=1:p; eiB5 8b3
wavel(j)=subwave(j,1);
^|DI9G(Bs
n(j)=n1+n2/((wavel(j))^2); 24_F`" :-=
k(j)=k1*exp(k2/wavel(j)); {l= !
N(j)=n(j)-i*k(j); V.Pb AN
phase(j)=2*pi*N(j)*d/wavel(j); M$ L1!o1Xf
ns(j)=nsub(j,1); "=I
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B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); '`^<*;w
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); *h Ph01
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); I^'kt[P'FZ
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; <7T E[M'
t1(j)=ts(j)*T(j); nfck3h
tf(j)=filmtran(j,1)/100; '|n-w\
>Wv
difference(j)=(t1(j)-tf(j))^2; p{7"a
end Wd'wL"6De
G=symsum(difference(j),1,401); Gu Msw*{>
G1=subs(G,n1,sym('x(1)')); SesJg~8
G2=subs(G1,n2,sym('x(2)')); (v*$ Ex F
G3=subs(G2,k1,sym('x(3)')); c #+JG
G4=subs(G3,k2,sym('x(4)')); `As.1@
G5=subs(G4,d,sym('x(5)'));
R*I{?+
Jq) !)={
AZ cW f8
6R% I)
在matlab下运行 RO,
>> options=optimset('tolfun',1e-8,'tolx',1e-8); /!,>P[ Vx
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); Oa=0d;_
)|f! }( p
+hg|!SS@5
结果出错如下： g]O"l?xx1D
Kl~jcq&z
??? Conversion to double from sym is not possible. 5% C-eB
Error in ==> fminsearch at 175 n\ aG@X%oq
fv(:,1) = funfcn(x,varargin{:}); {zhN>n_
CZg$I& x
哪位高手给看看 Qy |*[
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