| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： 3aO;@GNJ
function [G5]=fun(x); 4" ,
)zD k
syms n1 n2 k1 k2 d; nEd
M_JPv
[subwave,nsub]=textread('subout.txt','%f %f'); Qb?y@>-[
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); kQwm"Z
[p,q]=size(subwave); 0Q$~k
for j=1:p; pymx\Hd,
wavel(j)=subwave(j,1); 4yp RyO
n(j)=n1+n2/((wavel(j))^2); u%=bHg
k(j)=k1*exp(k2/wavel(j)); EvqUNnjR
N(j)=n(j)-i*k(j); ]HyHz9QkL
phase(j)=2*pi*N(j)*d/wavel(j); }$|% /Y
ns(j)=nsub(j,1); g HvW
e
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); np-T&Pz2
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); "J P {Q
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j)));
$-$5ta{s
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; n9kd2[s|
t1(j)=ts(j)*T(j); P?q
G
tf(j)=filmtran(j,1)/100; h-r 6PY=i
difference(j)=(t1(j)-tf(j))^2; 'f-
end &;ZC< ? wS
G=symsum(difference(j),1,401); zP :~O
G1=subs(G,n1,sym('x(1)')); ^91sl5c8yD
G2=subs(G1,n2,sym('x(2)')); h4Xc Kv+
G3=subs(G2,k1,sym('x(3)')); >`hSye{
G4=subs(G3,k2,sym('x(4)')); e86Aqehle
G5=subs(G4,d,sym('x(5)')); *CeQY M
s?^,iQ+tp
|.b%rVu
>oft :7p
在matlab下运行 M'cJ)-G
>> options=optimset('tolfun',1e-8,'tolx',1e-8); a9#W9eP
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); <G\
<QV8W
5mI?pfm
>"cr-LB
结果出错如下： A$7Eo`Of
\R8 6;9ov
??? Conversion to double from sym is not possible. /: #j ?c
Error in ==> fminsearch at 175 >vQ6V'F
fv(:,1) = funfcn(x,varargin{:}); I:F 'S#
$42Au2Jg
哪位高手给看看 [#7y[<.P
|
|