[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 (?A c`H  

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 8i$|j~M a  
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clc '-myOM7  
clear T=/c0#Q|q  
close all << =cZ.HP  
nx = 0:0.6:150; e<+)IW:  
n = length(nx)-1; V|A)f@ Fs  
figure vcW(?4e  
xz = []; HG /fp<[   
yz = []; BoT#b^l  
for ii = 1:n `[$>S  
    f=300; <IIz-6*V  
    h=150-nx(ii); Qz=e'H  
    b=atan(h/f); 0(o2<d7  
    d=(b/pi)*180 8nZ_.  
    syms c (<B%Gy@  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); xVsI#`<a  
   C=double(Y); 7/M[T\c  
   e=(C/pi)*180; H3!9H  
    x=0:0.1:0.6; oM1C/=8   
    y=(0.6-x)*tan(C); ?Xpk"N7  
    xz = [xz x+nx(ii)] h>>~Bi  
    yz = [yz y]; ADF<5#I  
    plot(xz,yz,'k-') aAqM)T83  
    hold on %
>/&&(BE  
    pause(0.01) ("(wap~<nD  
end 4-HBXG9#/  
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