6-26.m

来自「matlab图像程序.zip」· M 代码 · 共 13 行

[X,Y] = meshgrid(-2:.2:2);
Z = X.*exp(-X.^2 - Y.^2);
[DX,DY] = gradient(Z,.2,.2);
%梯度计算
contour(X,Y,Z)
%轮廓图绘制
hold on
quiver(X,Y,DX,DY)
%箭头图绘制
grid off
hold off
title '二维箭头图示例'