creating faces from vertices

2019 1 1
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更新时间：2019 4 29
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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

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回答（1 个）

KSSV
KSSV 2019-1-1
编辑：KSSV 2019-1-1

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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

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sama alimohamadi
sama alimohamadi 2019-1-1
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
KSSV 2019-1-1
how you got second image? for which points you want faces?
Aubrey Roche
Aubrey Roche 2019-4-29
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