[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 6l>016 x  

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 Zr\G=0`  
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clc #DTBdBh?I  
clear /8(t:  
close all =6w(9O  
nx = 0:0.6:150; BS3BJwf; f  
n = length(nx)-1; V SH64  
figure DGAg#jh  
xz = []; ~65lDFY/  
yz = []; N;,N6&veK/  
for ii = 1:n M^A;tPw  
    f=300; [;INVUwG^  
    h=150-nx(ii); $J:~jY/J  
    b=atan(h/f); l>>,~  
    d=(b/pi)*180 '-X913eG!  
    syms c dNs<`2
m  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); q/tC/V%@(  
   C=double(Y); V:
4($  
   e=(C/pi)*180; ~hA;ji|I  
    x=0:0.1:0.6; 5adB5)`  
    y=(0.6-x)*tan(C); A832z`  
    xz = [xz x+nx(ii)] 7\;gd4Ua1  
    yz = [yz y]; VrRBwvp-K  
    plot(xz,yz,'k-') k{$Mlt?&-  
    hold on Riz!HtyR  
    pause(0.01) ;6zp,t0  
end (V~
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