[vtkusers] data files and vtk 4.0

[David Gobbi]

Hi Chris,

I remember some of the discussion when vtk 4.0 was in its early stages,
and the idea was that VTKData should contain only the minimum amount
of data that is necessary for regression testing.  In other words, the
new VTKData does not serve the same purpose as the old VTKData (so
maybe it should have been called VTKRegressionData?).

Maybe a new module called VTKExampleData could be created that contains
all of the old example data.  It would be a waste to not have the old
data as an (optional) part of VTK 4.0 since so many people are already
familiar with it.

At the same time, some more examples could be added to VTK/Examples that
use the new data.  There are a few of my own examples I've been meaning to
move from VTK 3.X to VTK 4.0 that I just haven't gotten around to. I'm
certain that it was always the intent to move most of the vtk 3.x examples
to VTK 4.0, but everyone was concentrating on getting the smaller
regression test scripts moved first.

 - David



-- 
--
  David Gobbi, MSc                       dgobbi at irus.rri.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

On Sun, 11 Nov 2001, Christopher R. Volpe wrote:

> Back in the old days of vtk3.2, I would do a cvs checkout of "vtkdata" and
> get about 228 MB of data used by the various example scripts. Now, in
> vtk4.0, the scripts look for data files in a "Data" sub-folder within
> "VTKData" (note capitalization). So, I do a cvs checkout of VTKData, and I
> get about 22 MB of stuff, about half of which is regression test image
> files, with the other half consisting of actual vtk datasets.
>
> So, I'm a bit confused about the different data repositories (big "vtkdata"
> versus little "VTKData") and their intent. Is "vtkdata" now defunct, and
> replaced entirely by "VTKData"? If so, why did 90% of the data vanish? If
> not, why give them names differing only in capitalization, thereby forcing
> Windows users to jump through hoops to do checkouts of each from the same
> location? Also, what about example scripts that utilized those datafiles?
> The liquid oxygen post dataset is gone from VTKData, as are the LOx*.tcl
> example scripts. Are they gone for a reason? What's the deal?
>
> Thanks,
> Chris
>
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