There is a problem though, when I use vtkLoopSubdivisionFilter I can see that the height of the graph drops significantly, is there a solution for that? -- View this message in context: http://vtk.1045678.n5.nabble.com/Smooth-out-surface-interpolate-tp5724545p5724563.html Sent from the VTK - Users mailing list archive at Nabble.com.