TA的每日心情 | 开心 2023-6-2 15:15 |
---|
签到天数: 1 天 [LV.1]初来乍到
|
知道方向函数,画方向图应该好画吧,偶极子为例:: \& `8 C1 J3 W3 c v9 T6 c
clear all;clc;# Z( {- l' H/ ^% [! Y" M
theta=(0:pi/100:pi)+pi/100;+ s- U& Q; L, Q% c. E2 v/ c. n
phi=0:pi/100:2*pi;
6 E2 ~, W) r* {5 ?( Bfor m=1:length(theta)& Z/ C2 Z5 e& s4 w0 j
E(m)=cos(pi*cos(theta(m))/2)/sin(theta(m));7 [0 x) }" \; d' _6 `" ^# b0 O
for n=1:length(phi)
, H: S. ^: B8 Z0 [. q3 }% V9 px(m,n)=E(m)*sin(theta(m))*cos(phi(n));5 ]6 o) j1 `. Y D
y(m,n)=E(m)*sin(theta(m))*sin(phi(n));' b; F7 P$ Z0 m4 \. |
z(m,n)=E(m)*cos(theta(m));, y# J0 t! j9 Q7 j1 k9 K# n$ d
end- R! {# Y! w% U- M" w% g
end1 D4 L' G8 a# [+ p6 J& y
surf(x,y,z);
$ o/ f8 u/ Z8 r% O |
|