Hi Lukas, you are surely looking for this: http://www.vtk.org/Wiki/VTK/Examples/Cxx/DataStructures/KdTreePointLocator/ClosestPoint Kind Regards Adrian -- View this message in context: http://vtk.1045678.n5.nabble.com/Find-point-by-coordiante-tp5715458p5715459.html Sent from the VTK - Users mailing list archive at Nabble.com.