errors with quiver!

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John Omoruyi
John Omoruyi on 19 Jun 2022
Commented: John Omoruyi on 19 Jun 2022
Hello there,
...hopefully my intentions with the input below is understood. What exact changes should I consider with line 4 or 5? There's always an error issue here. Thanks, I'm new to this.
spacing = 0.2;
[X,Y] = meshgrid(-2:spacing:2);
Z = X.*exp(-X.^2 - Y.^2);
[DX,DY,DZ] = gradient(Z,spacing);
quiver(X,Y,Z,DX,DY,DZ)
hold on
contour3(X,Y,Z)
axis equal
hold off

Answers (1)

KSSV
KSSV on 19 Jun 2022
spacing = 0.2;
[X,Y] = meshgrid(-2:spacing:2);
Z = X.*exp(-X.^2 - Y.^2);
[DX,DY] = gradient(Z);
quiver(X,Y,DX,DY)
hold on
contour(X,Y,Z)
axis equal
hold off
  1 Comment
John Omoruyi
John Omoruyi on 19 Jun 2022
...thank u so much for replying.
I'm quite aware of this 2D solution, but actually more interested in the 3D implementation as I initially described. I'd be very greatful if you can help.

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