[vtkusers] VTK Python Wrapper - Exporting Surface Plot

[Alberti, Anthony Lewis]

Cory,

Thanks for your response. The data I am trying to visualize is from a 2D
time dependent simulation so there is a good amount of data. I am using
finite elements but the specific method in which I am using doesn't have a
2D mesh in the traditional sense - so typical visualization methods for
finite elements are kind of moot.

I was hoping that I would be able to directly output the data into some
form of vtk object that I could then use to visualize in a surface plot in
Paraview/Visit. That way I could adjust camera angles, color schemes, etc
and make everything into a movie to show the time dependent behavior. The
reason I was hoping to avoid to have to process raw data (e.g. through csv
files) is that the simulation simply outputs a lot of data (on the order of
10s of gigabytes) and post processing it directly in Paraview could be
expensive.

What do you think?

-- Tony

On Tue, Sep 12, 2017 at 7:18 AM, Cory Quammen <cory.quammen at kitware.com>
wrote:

> Hi Anthony,
>
> To my knowledge, exporting plots is not supported, especially
> exporting to an OBJ file, which is a geometry format.
>
> What do you hope to achieve by importing into ParaView/VisIt? Could
> you do your visualization in those tools to begin with?
>
> - Cory
>
> On Mon, Sep 11, 2017 at 1:59 PM, Alberti, Anthony Lewis
> <albertia at oregonstate.edu> wrote:
> > Hello all,
> >
> > I'm using VTK 8.0.1 and python 3.5 and am brand new to VTK. I am trying
> to
> > export a surface plot using vtkPlotSurface.
> >
> > By referencing VTK-8.0.1/Charts/Core/Testing/Cxx/TestSurfacePlot.cxx I
> have
> > successfully created a surface plot and have been able to render it in
> > python (even though it doesn't really look like a surface plot) - see
> > attached script.
> >
> > In order to better visualize what I've made, I wanted to try and export
> it
> > and then visualize using Paraview/Visit. However, I'm struggling to find
> any
> > concrete examples where this type of vtk object is exported...
> >
> > I have tried running the following:
> > out = vtk.vtkOBJExporter()
> > out.SetFilePrefix("test")
> > out.SetInput(chart)
> > out.Write()
> >
> > But end up with the following type error:
> > TypeError: SetInput argument 1: method requires a vtkRenderWindow, a
> > vtkContextView was provided.
> >
> > Can anyone provide assistance? Thanks in advance.
> > -- Tony
> >
> >
> >
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>
> --
> Cory Quammen
> Staff R&D Engineer
> Kitware, Inc.
>
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