程序有問題，在140.4、139.8、132等點處有異常值，請教一下大家怎么改，應該是Y=…那一步的式子有問題，謝謝 Qw-qcG  

圖片:})WX7H~ND~3OE[$Y(~WEX_R.png

1mV0AE538  
Y值為負的那幾個點是異常值 Uwk|M?94  
aKy|$ {RC  
clc T{M:)}V  
clear  f#nmr5F  
close all t*#&y:RG  
nx = 0:0.6:150; h:NXO'  
n = length(nx)-1; u5_fM*Ka  
figure 5S?yj  
xz = []; 3Cl9,Z"&6$  
yz = []; 5=986ci$U  
for ii = 1:n [ub\DLl  
    f=300; a40BisrD~6  
    h=150-nx(ii); #*/h
*GNMs  
    b=atan(h/f); :<gk~3\  
    d=(b/pi)*180 I2T2'_I  
    syms c UXJl;Mb  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); )]R?v,9*D  
   C=double(Y); 0}V'\=F454  
   e=(C/pi)*180; B$Z!E%a;  
    x=0:0.1:0.6; y|se^dn  
    y=(0.6-x)*tan(C); XEEbmIO*<9  
    xz = [xz x+nx(ii)] U8KY/!XZ  
    yz = [yz y]; Fm':sd)'X  
    plot(xz,yz,'k-') SI9hS4<j  
    hold on L />