creating faces from vertices

I have a m*3 matrix including the position of m 3D point positions, that make a surface. how can I create the triangulation facesc of these points (vertices)? I have attached my matrix.

thanks.

Samaneh

Answer 1

[KSSV]

Read about delaunayTriangulation

load('vertices.mat');
x = vertices(:,1) ; 
y = vertices(:,2) ; 
z = vertices(:,3) ; 

dt = delaunayTriangulation(x,y) ;

tri = dt.ConnectivityList ;
x = dt.Points(:,1) ;
y = dt.Points(:,2) ; 
trisurf(tri,x,y,z)
shading interp
view(2)

If you have edges in hand.......provide them and avoid the unnecessary connections. Also have a look on alphashape

[sama alimohamadi]

Thanks. actually for some of my data, I have both the faces and vertices and so I can plot my data as figure attached. But in the cases that there is no faces, I'm looking for a solution. the way you propose, draws some faces that are not correct and this can be seen by comparing the two figures attachd.

[KSSV]

how you got second image? for which points you want faces?

[Stephen23]

You might find boundary useful:

https://www.mathworks.com/help/matlab/ref/boundary.html

[Aubrey Roche]

Did you find a solution to this problem?