how to find the gradient(1st derivative) of 3D (XYZ) data

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Kate
Kate le 5 Oct 2013
Réponse apportée : Apiwat Pitaksin le 7 Oct 2020
Hi all,
I have X,Y and Z 3D surface data and I want to compute the gradient of the surface. The problem is that my data is not in grid/mesh format (i.e.my data is Mx3, not MxN) . Can anyone suggest a way to compute the gradient of this type of 3D data ?
thanks

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Apiwat Pitaksin
Apiwat Pitaksin le 7 Oct 2020
It might be the anser for anyone who found this question.
I just work with that kind of data with I using partial derivative and total derivative for soving this problem.

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