You can't use vtkbmpreader with vtkstuturedpoints. you can get more information here. http://jbeanvtk.sourceforge.net/apidocs/vtk/vtkBMPReader.html -- View this message in context: http://vtk.1045678.n5.nabble.com/vtkBMPReader-tp5716141p5716146.html Sent from the VTK - Users mailing list archive at Nabble.com.