| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： TZ!@IBu
function [G5]=fun(x); es=OWJt^
syms n1 n2 k1 k2 d; 8.+
yZTg
[subwave,nsub]=textread('subout.txt','%f %f'); 9QL%q;
#
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); k1s5cg=n(
[p,q]=size(subwave); nb 6Y/`G
for j=1:p; SQ/HZ
wavel(j)=subwave(j,1); )OVa7[-T
n(j)=n1+n2/((wavel(j))^2); ~l*<LXp8
k(j)=k1*exp(k2/wavel(j)); |{_>H '
N(j)=n(j)-i*k(j); <iGW~C Od
phase(j)=2*pi*N(j)*d/wavel(j); evNe6J3
ns(j)=nsub(j,1); ]]3rSXs2}J
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); zgH*B*)bj
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); *;~u 5y2b
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); Fop +xR,Z
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; g2=PZR$
t1(j)=ts(j)*T(j); j-DWz>x
tf(j)=filmtran(j,1)/100; &|db}\jT
difference(j)=(t1(j)-tf(j))^2; z0 #2?o
end ZmNNR 1%/
G=symsum(difference(j),1,401); ?,8+1"|$A]
G1=subs(G,n1,sym('x(1)')); Jyr
V2Tk^
G2=subs(G1,n2,sym('x(2)')); a ~ W
G3=subs(G2,k1,sym('x(3)')); JY^i
G4=subs(G3,k2,sym('x(4)')); &g1\0t
G5=subs(G4,d,sym('x(5)')); fFWi
3.
het <#3Bo
?:-:m'jdU
" Aw)0a[j1
在matlab下运行 GNq
f
>> options=optimset('tolfun',1e-8,'tolx',1e-8); ^w2 HF
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); .>P:{''
sowwXrECg@
P =\{
结果出错如下： o0|E x\
(Cfb8\~
??? Conversion to double from sym is not possible. F"O\uo:3
Error in ==> fminsearch at 175 Pnm$g; `P
fv(:,1) = funfcn(x,varargin{:}); X{OWDy
2lOUNx Q$
哪位高手给看看 pRL:,q\
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