[vtkusers] vtkStreamer and vtkFunctionSet

[Luca Antiga]

Hi Robert,
I completely agree with you

Luca


>From: "Robert Belleman" <robbel at science.uva.nl>
>To: <lucantiga at hotmail.com>
>CC: <vtkusers at public.kitware.com>
>Subject: Re: [vtkusers] vtkStreamer and vtkFunctionSet
>Date: Fri, 21 Jun 2002 10:01:41 +0200 (MEST)
>
>Instead of designing yet another file format, perhaps it would be
>better to adopt existing hierarchical scientific data formats
>such as HDF or NetCDF?
>
>We have a guy here at our appartment who implemented a vtkNetCDFReader
>some time ago. It hasn't been rigorously tested but perhaps it could
>be a starting point.
>
>-- Rob
>
>--
>[] Robert Belleman         X  Section Computational Science            []
>[] robbel at science.uva.nl  |X| University of Amsterdam, the Netherlands []
>[] tel: (+31) 20 525 7510  X  http://www.science.uva.nl/~robbel/       []
>
> > Hi Prabhu,
> > I agree with you as to file format. By now I use vtkFieldData to store
> > velocity time steps as vtkFloatArray's (the improvement in data classes
> > made  with vtk4.0 was cool) and save the whole in a vtk file. To
> > distinguish data  arrays you can put them in order them or, better,
> > name them, but a more  hierarchical organization of information is
> > needed (maybe making use of XML,  so to conform once for all to that
> > standard).
> >
> > Since this would mean re-designing some vtk features, I think we'd
> > better  wait for discussion with Berk and collegues.
> > Hear you soon
> >
> > Luca
> >
> >
> >>From: Prabhu Ramachandran <prabhu at aero.iitm.ernet.in>
> >>To: "Luca Antiga" <lucantiga at hotmail.com>
> >>CC: vtkusers at public.kitware.com
> >>Subject: Re: [vtkusers] vtkStreamer and vtkFunctionSet
> >>Date: Thu, 20 Jun 2002 22:49:58 +0530
> >>
> >> >>>>> "LA" == Luca Antiga <lucantiga at hotmail.com> writes:
> >>
> >>     LA> Hi Berk, (sorry for the repeated message, I wasn't sure about
> >>     LA> mail delivery) I needed to track massless particles in a LA>
> >>     time-varying pulsatile CFD simulation of blood vessels.  I did LA>
> >>     it by first writing a vtkInterpolatedTransientVelocityField,
> >>
> >>[snip]
> >>
> >>     LA> vtkStreakLine class which slightly generalize their steady LA>
> >>     couterparts.  If you want I can send you the code of the three LA>
> >>     classes.  Thanks for consideration
> >>
> >>Sounds great!  Would be nice if this code were part of VTK.  Quite a
> >>while ago there was talk of creating a more advanced data file format
> >>for VTK that would support more features.  There was also talk of
> >>streak lines etc.  Here are a few thoughts I've had.  They are still
> >>thoughts and I'm not going to have time to implement anything either.
> >>Effectively this is a wish list.  Just in case someone is listening.
> >>
> >>  1. A slightly more intelligent VTK file.  Maybe an additional file
> >>  format that allows for a more flexible syntax with scope for multiple
> >>  datasets, something like a #include  etc.
> >>
> >>  2. I guess Luca's classes handle integration over time.  So that
> >>  should be already done.
> >>
> >>  3. The ablity to use zipped VTK files.  Would this be useful or are
> >>  binary files good enough?  Now that zlib is distributed as part of
> >>  VTK this should not be a problem to implement.
> >>
> >>
> >>cheers,
> >>prabhu
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>
>
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