On Mon, Jan 31, 2011 at 9:19 AM, Rachel <aracha2010 at gmail.com> wrote: > > Thank you David for your help. the problem that I m meeting now is that the > numbers of the normals and vertices are not the same. do you have any idea > about this issue. > Thank you Is the number of normals > the number of points? If so, try polyDataNormals->SplittingOff(); David