[vtkusers] How can I pick a 'pixel' in Actor2D/ImageMapper?

[Zeehun Halm]

Hi vtk users..
Thanks to all contributors I've been gaining 
great hints from this mails.

Um,I've got some problems out of my hands, and I hope
it be a trivial one..

1. When I use picker in an image I always get the same
point which seems to a garbage data..
2. How can I 'zoom'a 2D image, so as i can get the
corresponding point or cell regardless of the scaling
factor?

Hope everyone get great works out of vtk's.

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