[求助]matlab编程绘图，三角函数，菲涅尔 [复制链接]

程序有问题，在140.4、139.8、132等点处有异常值，请教一下大家怎么改，应该是Y=…那一步的式子有问题，谢谢 ,_5YaX:<4  

图片:})WX7H~ND~3OE[$Y(~WEX_R.png

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Y值为负的那几个点是异常值 !?us[f=g%  

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clc .5#tB*H  
clear `lV  
close all f2SU5e2  
nx = 0:0.6:150; U||w6:W5  
n = length(nx)-1; c],frhmyd  
figure AD!<%h:  
xz = []; J6^Ct  
yz = []; &ttv4BC^r  
for ii = 1:n SCt=OdP=  
    f=300; iz%A0Z+`bg  
    h=150-nx(ii); &Curvc1fm  
    b=atan(h/f); zv
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    d=(b/pi)*180 fEv<W  
    syms c Ql6ai  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); CL@h!h554_  
   C=double(Y); 0:B^  
   e=(C/pi)*180; 9Sj:nn^/u  
    x=0:0.1:0.6; 8.;';[  
    y=(0.6-x)*tan(C); kT }'"  
    xz = [xz x+nx(ii)] _c(C;s3o  
    yz = [yz y]; 5[j!\d}U  
    plot(xz,yz,'k-') rO?x/{;ai  
    hold on /Vm}+"BCS  
    pause(0.01) L/iVs`qF  
end <@
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