[vtkusers] How to update renderer when vtkImageData is updated

[PonXo86]

Hi Summer,

I had the same problem, and the solution that worked for me was:

1. Use the modified function, for example I was updating the pixel values of
my pointer vtkSmartPointer<vtkImageData> vtk_Im, and after
vtk_Im->Modified(). 

2. Sure, with the Modified() function your vtkImageViewer2 isn't updated.
So, you have to call the method Render() of your pointer vtkImageViewer2
every time after you update your vtkImageData pointer.

I hope this works for you.



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