[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 Dj|S  

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 AYi$LsLhO  
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clc YW5E |z  
clear ><=af 9T  
close all PQK_*hJG"  
nx = 0:0.6:150; ;KhYh S(q  
n = length(nx)-1; W)l&4#__(  
figure Q*wx6Pu8  
xz = []; `XnFc*L 1  
yz = []; _eF*8 /z  
for ii = 1:n kB 2bT}  
    f=300; 4Vs;Y&t]  
    h=150-nx(ii); +SJ aE] $  
    b=atan(h/f); zt8ZJlNK  
    d=(b/pi)*180 [H&m@*UO  
    syms c Vf@/}=X *  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); YP7<j*s8  
   C=double(Y); "n\!y~:  
   e=(C/pi)*180; I}:/v$btM  
    x=0:0.1:0.6; 9we=aX5  
    y=(0.6-x)*tan(C); &`9lIVB,K  
    xz = [xz x+nx(ii)] D"hiEz  
    yz = [yz y]; V*?,r<(  
    plot(xz,yz,'k-') 4 qnQF]4  
    hold on 8177x7UG2[  
    pause(0.01) {r"
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n  
end  }N[sydL  
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