[vtkusers] Problem in loading big images using vtkimagereader

[John Drescher]

> http://public.kitware.com/pipermail/paraview/2008-March/007422.html
>
> Is when I came across the issue. I did not keep track of what the eventual
> "fixes" were but somewhere (probably a private email) I think it was said
> that a fix was difficult because the API for a lot of filters would need to
> be changed.
>   In the most draconian fix the use of "long" should just be banned, but
> this would cause all sorts of backwards compatibility issues.
>

Isn't there an option when building VTK to use 64 bit ids? I have
never used that so I am not sure how much of the code supports this.

John