[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 wwpvmb  

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 90ORx\Oeo  
:^ cA\2=  
clc UhEnW8^bz1  
clear lq%s/l  
close all Gm6^BYCk  
nx = 0:0.6:150; FijzO  
n = length(nx)-1; 6'Lij&,f?{  
figure h,#AY[Q  
xz = []; `Zk?.1*2/  
yz = []; TnKe"TA|9  
for ii = 1:n 6~2
!ZU  
    f=300; =)T5Y,+rJ  
    h=150-nx(ii); kj-Sd^  
    b=atan(h/f); @0)bY*njj  
    d=(b/pi)*180 S&QZ"4jq  
    syms c xUeLX`73  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); +q=/}|  
   C=double(Y); 3-Ti'xM  
   e=(C/pi)*180; U~T/f-CT  
    x=0:0.1:0.6; w-\GrxlbX  
    y=(0.6-x)*tan(C); icnp^2P  
    xz = [xz x+nx(ii)] a"ht\v}1  
    yz = [yz y]; 2} T"|56
 
    plot(xz,yz,'k-') M<)HJ lr  
    hold on *.i`hfRc  
    pause(0.01) 3N<FG.6  
end ikofJl]9  
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