ex2411.m

这是matlab的关于3维绘图方面的东西

%例24-11 三维向量场图
%Ex24-11 quiver3
clear
close all
[X,Y]=meshgrid(-3:0.4:3);
Z=-3*X.^2-Y.^2;
[U,V,W]=surfnorm(X,Y,Z);
quiver3(X,Y,Z,U,V,W,0.2)
hold on
surf(X,Y,Z)