| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： $.7 Ov|
function [G5]=fun(x); )IFzal}o
syms n1 n2 k1 k2 d; 0q@U>#
[subwave,nsub]=textread('subout.txt','%f %f'); Y(qyuS3h~*
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); % yVboA1
[p,q]=size(subwave); 4
Qo(Wl
for j=1:p; w7(j SPB
wavel(j)=subwave(j,1); L .cGt"{
n(j)=n1+n2/((wavel(j))^2); u _;&+o2
k(j)=k1*exp(k2/wavel(j)); S)$)AN<O
N(j)=n(j)-i*k(j); Za*QX|
phase(j)=2*pi*N(j)*d/wavel(j); QR.] ?t;1
ns(j)=nsub(j,1); l"C)Ia&/
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); VGHy|5K$
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); A6 D@#(D
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); myR}~Cj;q
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; 8 2EH'C
t1(j)=ts(j)*T(j); q1|! oQ
tf(j)=filmtran(j,1)/100; /C 'dW
difference(j)=(t1(j)-tf(j))^2; 8 [z<gxP`?
end OdZLJt?g
G=symsum(difference(j),1,401); BEm~o#D
G1=subs(G,n1,sym('x(1)')); O%>FKU>(?
G2=subs(G1,n2,sym('x(2)')); nVO|*Bnf)
G3=subs(G2,k1,sym('x(3)')); v>4kF _N
G4=subs(G3,k2,sym('x(4)')); *c 0\<BI
G5=subs(G4,d,sym('x(5)')); &fI x2ZM[
nB8JdM2 h{
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在matlab下运行 YFGQPg
>> options=optimset('tolfun',1e-8,'tolx',1e-8); 9b8kRz[ c
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); ]+OHxCj:
XDot3)2`
>h[ { _+
结果出错如下： GC <zL }
_YT9 zG
??? Conversion to double from sym is not possible. [i
]
Error in ==> fminsearch at 175 A3!xYG=+
fv(:,1) = funfcn(x,varargin{:}); GWQ_X9+q
x}c%8dO#J
哪位高手给看看
a2z1/Nh
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