| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： j W -K
function [G5]=fun(x); ]#FQde4]5
syms n1 n2 k1 k2 d; y(**F8>?xE
[subwave,nsub]=textread('subout.txt','%f %f'); #<w2 xR]:
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); SXV
f&8
[p,q]=size(subwave); +DSZ(Zb4qY
for j=1:p; 3e;ux 6
wavel(j)=subwave(j,1); #]w BXzu?
n(j)=n1+n2/((wavel(j))^2); uHt @;$9A
k(j)=k1*exp(k2/wavel(j)); Y^5)u/Y=U
N(j)=n(j)-i*k(j); h7}P5z0F
phase(j)=2*pi*N(j)*d/wavel(j); n*eq M2 L
ns(j)=nsub(j,1); ZP4y35&%y
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); !!v9\R4um
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); ~/Kqkhq+c
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); A ^7}:[s20
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; vPu {xy
t1(j)=ts(j)*T(j); :1!k*5
tf(j)=filmtran(j,1)/100; HwBJUr91]
difference(j)=(t1(j)-tf(j))^2; }Szs9-Wns
end 3=^B
& AB
G=symsum(difference(j),1,401); 1KI5tf>>p
G1=subs(G,n1,sym('x(1)')); arn7<w0
G2=subs(G1,n2,sym('x(2)')); 3TT?GgQ
G3=subs(G2,k1,sym('x(3)')); ]Mgxv>zRbs
G4=subs(G3,k2,sym('x(4)')); ].x`Fq3
G5=subs(G4,d,sym('x(5)')); ?Ak y!43
D{]9 s
tfd!;` B
2TX.%%Ze
在matlab下运行 6p~8(-nG
>> options=optimset('tolfun',1e-8,'tolx',1e-8); 5S%#3YHY2
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); ,k6V?{ZA
X}]g;|~SN
g;</ |Z
结果出错如下： &jF[f4:7
~qb-uT\(99
??? Conversion to double from sym is not possible. @?[}\9dW
Error in ==> fminsearch at 175 {pk&dB _Bu
fv(:,1) = funfcn(x,varargin{:}); x1 1ug
M_#^zo
"x
哪位高手给看看 O['5/:-
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