[vtkusers] a surprise questuion about show some clouds!

[seaer]

 hello all!
 I used VTK(5.4 ) to show some points on QVTKWidget with QT(4.7.3), a
surprise questuion happened!
  there are two different input data:
   // a.txt (x,y,z)
  1.021 1.548 93.725 
  1.011 1.555 93.735 
  1.023 1.588 93.711 
  1.009 1.591 93.726
  1.001 1.601 93.732
    
  http://vtk.1045678.n5.nabble.com/file/n5126976/Screenshot.png 

  // b.txt (x,y,z)
  607645.021 3623761.548 93.725 
  607645.011 3623761.555 93.735
  607645.023 3623761.588 93.711 
  607645.009 3623761.591 93.726 
  607645.001 3623761.601 93.732 
   http://vtk.1045678.n5.nabble.com/file/n5126976/Screenshot-1.png 

 in my code, i has used renderer->ResetCamera();
 input aa.txt , vtkPoints have 5 points. input bb.txt ,vtkPoints also have 5
poins. but  when show  inputting bb.txt  data ,why  viewPort only a point
.for me, I didn't understand some   VTK mechanisms about this. 
 how can i do good about this.
  thanks!
  


 




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