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    [求助]fminsearch应用出错 [复制链接]

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    离线fanyushan
     
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    只看楼主 倒序阅读 楼主  发表于: 2010-07-19
    我的M文件如下: W9?Vh{w  
    function [G5]=fun(x); @twClk.s  
    syms n1 n2 k1 k2 d; `|;R}"R;  
    [subwave,nsub]=textread('subout.txt','%f %f'); Y`3>i,S6\  
    [filmwave,filmtran]=textread('filmtr.dat','%f %f'); 0zaE?dA]  
    [p,q]=size(subwave); wg*2mo  
    for j=1:p; 0Q=4{*:?  
        wavel(j)=subwave(j,1); l =ZhHON  
        n(j)=n1+n2/((wavel(j))^2); ]dc^@}1bN  
        k(j)=k1*exp(k2/wavel(j)); k9.2*+vvg  
        N(j)=n(j)-i*k(j); 0I4RZ.2*Y  
        phase(j)=2*pi*N(j)*d/wavel(j); s3W)hU)  
        ns(j)=nsub(j,1); Qj?FUxw  
        B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); DGTSk9iK(  
        C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); k#% BxT  
        T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); mV} peb  
        ts(j)=1-((1-ns(j))/(1+ns(j)))^2; 2`Xy}9N/Y  
        t1(j)=ts(j)*T(j); x5k6yHn  
        tf(j)=filmtran(j,1)/100; ~&=-*  
        difference(j)=(t1(j)-tf(j))^2; #n 7uw  
    end TDdFuO'}  
    G=symsum(difference(j),1,401); GH![rK  
    G1=subs(G,n1,sym('x(1)')); " ;cWK29\f  
    G2=subs(G1,n2,sym('x(2)')); C$xU!9K[+  
    G3=subs(G2,k1,sym('x(3)')); *Y6BPFE*4  
    G4=subs(G3,k2,sym('x(4)')); GmB7@-[QA%  
    G5=subs(G4,d,sym('x(5)')); yK<%AV@v  
    52BlFBNV  
    {mMrD 5  
    impzqQlZ,  
    在matlab下运行 P7(+{d{  
    >> options=optimset('tolfun',1e-8,'tolx',1e-8); veg\A+:'  
    >> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); _H|x6X1-  
    vDz)q  
    T%Vii*?M  
    结果出错如下: HiEXw}Hkz  
    [L8Bgw1  
    ??? Conversion to double from sym is not possible. !MNUp(:  
    Error in ==> fminsearch at 175 [>Kkj;*  
    fv(:,1) = funfcn(x,varargin{:}); xCD|UC46?X  
    E% Ce/n  
    哪位高手给看看 W\o(f W  
     
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    离线fanyushan
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    只看该作者 1楼 发表于: 2010-07-21
    哪位高人告诉我,错误在哪里呀。M文件复制到命令行,执行,一切正常,就是在求解多元函数0值时,不知道哪里错了。 f2B?Zn  
    V= U=  
    B@` 87  
    万分感谢呀