how I can find the edges of polygon given by voronoin used for 3D vertices in matlab??

I am trying to find local porosity in pebble bed.how I can find the edges of polygon which is enclosing the pebbles. I am using voronoin.

[KSSV]

Possible image with your tried code and expectations help us to help you.

Answer 1

[Bruno Luong]

From the doc:

[V,C] = voronoin(X) returns Voronoi vertices V and the Voronoi cells C of the Voronoi diagram of X.

C{k} is the list of row-indexes (in V) of voronoi cell of seed #k.