6-27.m

来自「matlab图像处理源码」· M 代码 · 共 14 行

[X,Y] = meshgrid(-2:0.25:2,-1:0.2:1);
Z = X.* exp(-X.^2 - Y.^2);
[U,V,W] = surfnorm(X,Y,Z);
%返回三维表面图的法线
quiver3(X,Y,Z,U,V,W,0.5);
%绘制三维箭头图
hold on
surf(X,Y,Z);
%绘制网状表面图
axis ([-2 2 -1 1 -.6 .6])
%坐标设定
hold off
title '三维箭头图示例'