| fanyushan |
2010-07-19 14:12 |
fminsearch应用出错
我的M文件如下： I{i6e'.jP
function [G5]=fun(x); 8Om4G]*|,
syms n1 n2 k1 k2 d; L| ]fc9W:
[subwave,nsub]=textread('subout.txt','%f %f'); xbz O' C
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); A "/|h].
[p,q]=size(subwave); vLpIVNA]]Y
for j=1:p; ]JQ}9"p=5
wavel(j)=subwave(j,1); {hoe^07XK
n(j)=n1+n2/((wavel(j))^2); @$1jp4c
k(j)=k1*exp(k2/wavel(j)); WsW] 1p
N(j)=n(j)-i*k(j); C8%MKNPd
phase(j)=2*pi*N(j)*d/wavel(j); Q@[ (0R1
ns(j)=nsub(j,1); O~|Y#T
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); _k#!^AJ}x
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); kAs=5_?I
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); p@ U[fv8u
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; q+
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t1(j)=ts(j)*T(j); cN MDI
tf(j)=filmtran(j,1)/100; =R)w=ce
difference(j)=(t1(j)-tf(j))^2; HGF&'@dn
end a7aj:.wi
G=symsum(difference(j),1,401); \f7R^;`_<R
G1=subs(G,n1,sym('x(1)')); Y]!&, e,
G2=subs(G1,n2,sym('x(2)')); izu_1X
G3=subs(G2,k1,sym('x(3)')); i:G yi([C
G4=subs(G3,k2,sym('x(4)')); `3* QKi$
G5=subs(G4,d,sym('x(5)')); 39L_O RMH
;]k \F
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[=cYsW%WG
在matlab下运行 <d O ~;
>> options=optimset('tolfun',1e-8,'tolx',1e-8); |.;] e[&
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); !w%p Gv.wg
'
H4m"
>M0^R} v
结果出错如下： z]D /Qr
B> c2 *+Bk
??? Conversion to double from sym is not possible. nJ$2RN
Error in ==> fminsearch at 175 U;0:@.q
fv(:,1) = funfcn(x,varargin{:}); .hUlI3z9
g~U<0+&yw%
哪位高手给看看 85$ WH
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