I try several methods to write an stl file based on the ellipsoid geometry.

But I haven't find way to successfully do it.

Following is my code

`clear clcclose all[x, y, z] = ellipsoid(0,0,0,5.9,3.25,3.25,30);s=surf(x,y,z)p=surf2patch(s)%Extract faces and vertices from structure p`

pf=p.facespv=p.verticestr=triangulation(pf,pv) stlwrite(tr,'ell.stl')

The message ''Tetrahedron triangulation is not supported.'' appears, I know I could use ''boundaryFacets'' command to solve this problem, but I don't know how to create an alphaShape of ellipsoid.

Could anyone gives me a hint?

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