[Paraview] Post processing vts data in paraview with python

[David Doria]

On Wed, May 20, 2009 at 5:10 PM, Mark Fleharty <mark.fleharty at gmail.com>wrote:

> On Wed, May 20, 2009 at 4:44 AM, David Doria <daviddoria at gmail.com> wrote:
> > On Tue, May 19, 2009 at 10:52 PM, Mark Fleharty <mark.fleharty at gmail.com
> >
> > wrote:
> >>
> >> Hello,
> >>
> >> I'm new to using Python with Paraview.  I've been generating data in
> >> the vts file format, and I would like to do some post processing on it
> >> inside Paraview.
> >>
> >> I'm trying to read data from a structured grid and just get the
> >> various values for different X, Y, and Z positions.
> >>
> >> I have a simple script that looks like:
> >>
> >> from paraview.servermanager import *
> >> Connect()
> >>
> >> reader = sources.XMLStructuredGridReader(FileName="fields.vts")
> >> extract=filters.ExtractGrid(Input=reader)
> >>
> >> So far this seems to work, I've been trying to figure out what methods
> >> exist withing ExtractGrid and XMLStructuredGridReader that I can use
> >> to find out what values I have at certain positions.
> >>
> >> Does anyone have a script that already does something similar?
> >>
> >> Thanks,
> >>
> >> Mark
> >>
> >
> > In the python shell you can run dir(filters.ExtractGrid) and
> > dir(sources.XMLStructuredGridReader) to see which methods are supported
> in
> > python.
>
> Thanks David.  I've done dir and help on sources, filters, and many of
> the member functions/variables.
>
> I did find that sources.XMLStructuredGridReader has a
> GetDataInformation() member, and inside of that a DataInformation
> variable that has a number of members that indicate that it has loaded
> my data, but I'm still unable to find any member functions that can
> retrieve the values of my data at particular grid points.
>
> Any help would be appreciated.
>
> Thanks,
>
> Mark
>

Sorry Mark, I can't figure it out either (I tried with XMLPolydatareader
too). There seems to be a PointData member, but as you say I don't know how
to get at the actual data. I guess we'll wait for one of the experts to
reply :)

Thanks,

David
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