切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 4218阅读
    • 1回复

    [求助]fminsearch应用出错 [复制链接]

    上一主题 下一主题
    离线fanyushan
     
    发帖
    36
    光币
    52
    光券
    0
    只看楼主 倒序阅读 楼主  发表于: 2010-07-19
    我的M文件如下: H%XF~tF:  
    function [G5]=fun(x); ca,W:9#.xn  
    syms n1 n2 k1 k2 d; :o .+<_ &  
    [subwave,nsub]=textread('subout.txt','%f %f'); 1]eRragm"  
    [filmwave,filmtran]=textread('filmtr.dat','%f %f'); 7F6 B  
    [p,q]=size(subwave); [`oVMR  
    for j=1:p; <e?Eva%t`  
        wavel(j)=subwave(j,1); [61*/=gWe  
        n(j)=n1+n2/((wavel(j))^2); "TJ*mN.i{}  
        k(j)=k1*exp(k2/wavel(j)); w]yVNB  
        N(j)=n(j)-i*k(j); b,YNCb]H  
        phase(j)=2*pi*N(j)*d/wavel(j); 7KX27.~F  
        ns(j)=nsub(j,1); M;,$ )>P  
        B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); XL^05  
        C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); PCHspe9!y  
        T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); Y)DX   
        ts(j)=1-((1-ns(j))/(1+ns(j)))^2; S,nELV~!  
        t1(j)=ts(j)*T(j); U: Wet,  
        tf(j)=filmtran(j,1)/100; @aZTx/  
        difference(j)=(t1(j)-tf(j))^2; (y 7X1Qc)  
    end !& >`  
    G=symsum(difference(j),1,401); )S(Ly.  
    G1=subs(G,n1,sym('x(1)')); "I)zi]vk  
    G2=subs(G1,n2,sym('x(2)')); 8\!E )M|4  
    G3=subs(G2,k1,sym('x(3)')); Y}v3J(l  
    G4=subs(G3,k2,sym('x(4)')); Hj|&P/jY]*  
    G5=subs(G4,d,sym('x(5)')); TKv!wKI  
    w $6Z}M1d  
    3,Yr%`/5'  
    8"9&x} tl-  
    在matlab下运行 / De~K+w7o  
    >> options=optimset('tolfun',1e-8,'tolx',1e-8); #}FUau$  
    >> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); z__?kY  
    3>-h- cpMX  
    D,ZLo~  
    结果出错如下: %:d7Ts&?Z  
    =uH2+9.  
    ??? Conversion to double from sym is not possible. ~cCMLK em  
    Error in ==> fminsearch at 175 r O$pj~!|Q  
    fv(:,1) = funfcn(x,varargin{:}); ft6)n T/"&  
    x lS*9>Ij  
    哪位高手给看看 wCB*v<*  
     
    分享到
    离线fanyushan
    发帖
    36
    光币
    52
    光券
    0
    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。 >8"Svt$  
    Oh*~+/u}q  
    _TOWqV^  
    万分感谢呀