Leveling a surface within MATLAB

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Prospera Sibanda 2020-6-22

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https://ww2.mathworks.cn/matlabcentral/answers/552568-leveling-a-surface-within-matlab

评论： Prospera Sibanda 2020-6-23

Hello everyone.

I have a 466307x3 matrix of a surface and my aim is to calculate surface parameter Sa. May I know how to level the surface (remove surface slope) like you would in a software like mountain maps or sensomap?

Thanks for your support.

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Image Analyst 2020-6-22

There are many ways to "flatten" even a 1-D curve. Lots of different methods. There are even more so with a 2-D surface (e.g. the MATLAB peaks orange mountain logo). So you need to be specific as to what method you'd like to use. What if you just took the convex hull with convn() and used that to flatten it? This would be like if you stood the surface on a table top. The surface would fall and tilt until just 3 points were in contact with the table top, like a tripod.

Prospera Sibanda 2020-6-23