How to calculate slope/gradient in 3D surface data

Question

Frhnh R 2020-4-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/521098-how-to-calculate-slope-gradient-in-3d-surface-data

评论： Seven Nguyen 2022-3-23

I have this matlab data that looks like this,

X = 1:15;
Y = [5 5 5 10 15 20 25 25 25  20 15 10 5 5 5];
dx = 1;
dy = 1;
Z = (ones(numel(X),1)*Y)+ randn(15,15)
figure
surf(Z)
ylabel('y-axis [um]');
xlabel('x-axis [um]');
zlabel('z-axis [um]');

Im trying to find a way to automatically determine the slope of this 3D surface but I couldnt find it. Can anyone help me?

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Answer 1

Ameer Hamza 2020-4-27

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/521098-how-to-calculate-slope-gradient-in-3d-surface-data#answer_428677

编辑：Ameer Hamza 2020-4-27

在 MATLAB Online 中打开

See gradient(): https://www.mathworks.com/help/matlab/ref/gradient.html

X = 1:15;
Y = [5 5 5 10 15 20 25 25 25  20 15 10 5 5 5];
dx = 1;
dy = 1;
Z = (ones(numel(X),1)*Y)+ randn(15,15);
figure
surf(Z)
title('surface');
figure
surf(gradient(Z))
title('gradient');