Vtkpoints merge

Dear VTK User

I am a vtk user and unfortunetly relatively new to it, I have search the archives and your post “How to write multiple vtkPolyData into on single XML file” is the closest I’ve come to what I’m trying to do. I have created two series of vtkPoints and saved them out in the polydata format with vtkPolyDataWriter, once I have saved them I try to bring them both into a new program and merge them together using vtkAppendPolyData. Whenever I try to merge two files or even a file and some already existing PolyData it won’t render them out.

I have provided my code below:

package require vtk

package require vtkinteraction

vtkRenderer ren1

vtkRenderWindow renWin

renWin AddRenderer ren1

vtkRenderWindowInteractor iren

iren SetRenderWindow renWin

ren1 SetBackground 1.8 1.8 1.8

renWin SetSize 720 720

Inport two PolyData Files.

vtkPolyDataReader reader1

          reader1 SetFileName "d:/education/spencer/simulation/servers.txt"

vtkPolyDataReader reader2

          reader2 SetFileName "d:/education/spencer/simulation/points.txt"

Appended into a single polydata. vtkAppendPolyData apd

  apd AddInput [reader1 GetOutput]
  apd AddInput [reader2 GetOutput]

vtkSphereSource node

                      node SetRadius 1.25
                      node SetPhiResolution 18
                      node SetThetaResolution 18

create a glyph using 'balls' as the object and 'inputData' for location with 3D space vtkGlyph3D glyphPointsServers

          glyphPointsServers SetInputConnection [apd GetOutputPort]
          glyphPointsServers SetSource [node GetOutput]

Assign simple mapper to glyph vtkPolyDataMapper glyphMapperServers

          glyphMapperServers SetInput [glyphPointsServers GetOutput]

create actor of gylph to enable rendering of points vtkActor glyphServers

          glyphServers SetMapper glyphMapperServers
          [glyphServers GetProperty] SetColor 255 0 0
          [glyphServers GetProperty] SetSpecular .3
          [glyphServers GetProperty] SetSpecularPower 10
          ren1 AddActor glyphServers

renWin Render

Thankyou for any help you can provide,

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