| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： "PTZ%7YH}
function [G5]=fun(x); P0 j8- I
syms n1 n2 k1 k2 d; W~9tKT4
[subwave,nsub]=textread('subout.txt','%f %f'); }"PU%+J
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); 5T2CISmu
[p,q]=size(subwave); 8sM|%<$=j
for j=1:p; 4\u1TYR
wavel(j)=subwave(j,1); /-+ xQn]
n(j)=n1+n2/((wavel(j))^2); Q&=w_W c
k(j)=k1*exp(k2/wavel(j)); _zn.K&I-*k
N(j)=n(j)-i*k(j); m\r@@!
phase(j)=2*pi*N(j)*d/wavel(j); %'7lbpy,f
ns(j)=nsub(j,1); @l jA
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); |G,tlchprs
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); dj7hx "BI
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); IIF] /Ek]
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; Q)" Nu.m
&
t1(j)=ts(j)*T(j); i}mVQ\j5
tf(j)=filmtran(j,1)/100; vM t/u?oB
difference(j)=(t1(j)-tf(j))^2; s ;oQS5Y
end Bb^;q #S1
G=symsum(difference(j),1,401); kG@@ot" n
G1=subs(G,n1,sym('x(1)')); =JbRu|/
G2=subs(G1,n2,sym('x(2)')); fW3(&@
G3=subs(G2,k1,sym('x(3)')); Xr$J9*Jk-
G4=subs(G3,k2,sym('x(4)')); BJsz2t :0
G5=subs(G4,d,sym('x(5)')); ?DQsc9y
]#l/2V1
nvJf/90$
wKY Za# u
在matlab下运行 o9%)D<4M
>> options=optimset('tolfun',1e-8,'tolx',1e-8); `W:%mJd9
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); w?wG(+X7
0y;*Cfi9
)d1_Wm#B
结果出错如下： UA8GL D9
~&8^9E a
??? Conversion to double from sym is not possible. 'y2nN=CN
Error in ==> fminsearch at 175 1H@>/QC
fv(:,1) = funfcn(x,varargin{:}); BJB^m|b)
57zSu3v4Y
哪位高手给看看 XY)&}u.
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