[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 )D8V;g(7F  

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 *'\xlsp#  
9`|~-b  
clc gK",D^6T*Y  
clear 2|:x_rcj  
close all %WO4uOi:@  
nx = 0:0.6:150; DEN (pA\  
n = length(nx)-1; g?>V4WF  
figure "H3DmsB  
xz = []; t(r}jU=qw  
yz = []; p#+Da\qmx  
for ii = 1:n WX}pBmU  
    f=300; DUlvlQW  
    h=150-nx(ii); ;Vlt4,s)  
    b=atan(h/f); y#?AW`|  
    d=(b/pi)*180 $I4:g.gKpG  
    syms c y8/+kn +  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); Q/y"W,H#  
   C=double(Y); 54>gr1B  
   e=(C/pi)*180; OiJz?G:m  
    x=0:0.1:0.6; ]~t4E'y)z  
    y=(0.6-x)*tan(C); {/Qg4pc!  
    xz = [xz x+nx(ii)] Vohd d_x  
    yz = [yz y]; RDsBO4RG  
    plot(xz,yz,'k-') #:M <<gk  
    hold on gkMyo`  
    pause(0.01) "D[/o8Hk  
end
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