clear all; close all; I=1; x=-5:5; y=-5:5; z=-5:5; [X,Y,Z]=meshgrid(x,y,z); Hx=-I/(2*pi)*Y./(X.^2+Y.^2); Hy=I/(2*pi)*X./(X.^2+Y.^2); Hz=0*X; plot3([0,0],[0,0],[z(1),z(end)],'r-','linewidth',5); hold on; quiver3(X,Y,Z,Hx,Hy,Hz,'b');
clear all; close all; I=1; x=-5:5; y=-5:5; z=-5:5; [X,Y,Z]=meshgrid(x,y,z); Hx=-I/(2*pi)*Y./(X.^2+Y.^2); Hy=I/(2*pi)*X./(X.^2+Y.^2); Hz=0*X; plot3([0,0],[0,0],[z(1),z(end)],'r-','linewidth',5); hold on; quiver3(X,Y,Z,Hx,Hy,Hz,'b');