08-21.txt

来自「MATLABR2006a基础教程」· 文本 代码 · 共 12 行

>> n = -2.0:.2:2.0;

>> [X,Y,Z] = peaks(n);

>> contour(X,Y,Z,10)

>> [U,V] = gradient(Z,.2);

>> hold on

>> quiver(X,Y,U,V)