| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： sT2`y$ '
function [G5]=fun(x); 'sUO i7U
syms n1 n2 k1 k2 d; >ceC8"}J5M
[subwave,nsub]=textread('subout.txt','%f %f'); l%"DeRp ,/
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); '2lzMc>wvP
[p,q]=size(subwave); yC\UT
~j/
for j=1:p; n! /0yR2S
wavel(j)=subwave(j,1); #RR;?`,L}
n(j)=n1+n2/((wavel(j))^2); ) Su>8f[?e
k(j)=k1*exp(k2/wavel(j)); `KA==;0
N(j)=n(j)-i*k(j); ?YL J Xq
phase(j)=2*pi*N(j)*d/wavel(j); ?m]vk|>
ns(j)=nsub(j,1); SqPqL<,e
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); L.'61ZU
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); \{ EVRRXn
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); #ay/V lD@
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; _F6<ba}o3
t1(j)=ts(j)*T(j); erEB4q+ #O
tf(j)=filmtran(j,1)/100; e7;7TrB.
difference(j)=(t1(j)-tf(j))^2; piM4grg
\
end .>R`#@+I
G=symsum(difference(j),1,401); !VWA4 e!+
G1=subs(G,n1,sym('x(1)')); aH1CX<3)~
G2=subs(G1,n2,sym('x(2)')); v3 Vve:}+
G3=subs(G2,k1,sym('x(3)')); gxVr1DIkN
G4=subs(G3,k2,sym('x(4)')); i;^lh]u
G5=subs(G4,d,sym('x(5)')); zb9G&'7
RQ8d1US
. yy*[56X
=fRS UtX
在matlab下运行 T4.wz
58
>> options=optimset('tolfun',1e-8,'tolx',1e-8); #9|&;C5',!
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); ~@c<5 -`{
Ak@! F6~
]?VV wft
结果出错如下： 8*0QVFn$
CHKhJ v3+4
??? Conversion to double from sym is not possible. 59)w+AW
Error in ==> fminsearch at 175 USyc D`
fv(:,1) = funfcn(x,varargin{:}); ,1mL=|na
r=n{3o+
哪位高手给看看 S~aWun
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