MATTLAB运行结果及报错内容

Question

x = -2:0.2:2;
y = x';
z = x .* exp(-x.^2 - y.^2);
[px,py] = gradient(z);
figure
contour(x,y,z)
hold on
quiver(x,y,px,py)
hold off
系统报错：错误使用 -
矩阵维度必须一致。

Answer 1

你好，我这里没有报错

clc; clear
x = -2:0.2:2;
y = x';
z = x .* exp(-x.^2 - y.^2);
[px,py] = gradient(z);
figure(1); clf
contour(x,y,z)
hold on
quiver(x,y,px,py)
hold off

画出来了图