hello David I used VTK 5.4, it don't have VtkCellPicker::GetPointId, what should i do it ? using vtkGetSubId is helfull ? thanks! -- View this message in context: http://vtk.1045678.n5.nabble.com/Picker-tp4718448p4721639.html Sent from the VTK - Users mailing list archive at Nabble.com.