How to plot 3D surface for data

Hello All I am trying to create 3d plot for an intersection Coordinates (X,Y,Z) which i have in a matrix , i made a good scattering plot from it ,but i can not make surface or plot lines between the points in the right way ,
i need to know how to draw lines between specific points
thnax in advance

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Do you have the connectivity specified? In other words: which points are connected to which?
Otherwise, you could use something like a Delaunay triangulation.
doc Delaunay

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