[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 mxP{"6  

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 [4t_ 83  
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clc ed>_=i  
clear .o.@cLdU  
close all uop_bJ  
nx = 0:0.6:150; 1*;?uC\  
n = length(nx)-1; F}i rCi47c  
figure 4.CLTy3W  
xz = []; 3lA<{m;V  
yz = []; kTs)u\r.  
for ii = 1:n YR~g&E#U^  
    f=300; qXP)R/~OZ  
    h=150-nx(ii); B>AIec\jG  
    b=atan(h/f); y(6&90cr  
    d=(b/pi)*180 *A c~   
    syms c v|QFUa`  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); tty6  
   C=double(Y); fs~n{z,ja%  
   e=(C/pi)*180; OuS{ve  
    x=0:0.1:0.6; 6mMJ$FY+  
    y=(0.6-x)*tan(C); `=%[  
    xz = [xz x+nx(ii)] *C's7O{O  
    yz = [yz y]; *"j_3vAx  
    plot(xz,yz,'k-') o"QpV >x  
    hold on Q.M3rRh  
    pause(0.01) jVk|(  
end +z("'Cv  
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