[Paraview] 2d dataset, can i use paraview to interpolate values on x, y surface?

[Pat Marion]

Hi Ben,

It's possible that your data is causing certain filters to crash.  If you
can share an example data file, then maybe some paraview developer can try
it out, and if we can reproduce the crash then we can try to fix the filter
for future releases of paraview.  Also, I'd recommend you download the
latest version of paraview from paraview.org and try with that.  Maybe the
crashes you are experiencing have been fixed in the newer version.  You can
get a binary for linux as a tarball, you should be able to extract and run
it without installing anything.

Pat

On Sun, Feb 17, 2013 at 11:09 AM, Ben Harrison
<ben.harrison at liquidmesh.com>wrote:

> Thanks Kevin,
>
> That's almost what I was doing, but I had never managed to progress
> that far (to the delaunay filter) due to crashes.
>
> Some answers:
>
> > Is your system fully updated?
> Yes it is (I am responsible for it).
>
> > Have you installed any software not from the repositories like
> > graphics drivers?
> Yes - the NVIDIA proprietary driver.
>
> > What graphics card do you have?
> NVidia Quadro NVS 295/PCIe/SSE2
>
> > What graphics driver do you have?
> The latest NVidia drivers (version current) offered through partner repos.
>
> > Does Ubuntu have the equivalent of debuginfo packages? These
> > restore all the information that is useful only to developers to
> > the binaries and can make the output of a segfault _very_
> > informative.
> I don't know... does this Q&A answer that?
> http://askubuntu.com/questions/53708/how-to-create-debuginfo-package
>
> I've done as suggested in the accepted answer and now the repos offer
> me the following new packages:
> paraview-dbgsym - debug symbols for package paraview
> paraview-dev-dbgsym - debug symbols for package paraview-dev
> paraview-python-dbgsym - debug symbols for package paraview-python
> libxdmf2-dbgsym - debug symbols for package libxdmf2
> libvtkedge-dbgsym - debug symbols for package libvtkedge
>
> Any recommendations for which one(s) I should install, and then next steps?
>
> Cheers,
> Ben
>
> On 15 February 2013 21:50, Kevin H. Hobbs <hobbsk at ohio.edu> wrote:
> > On 02/14/2013 05:57 PM, Ben Harrison wrote:
> >> I have been trying to see if I can use paraview to do some analysis
> >> and plotting of a 2d dataset exported in csv format.
> >
> > I believe csv files are imported as a sort of spreadsheet table.
> >
> > Use the "Table To Points" filter to convert them to points. My
> > version even has a 2d option.
> >
> >> I just want to know if paraview is the right choice (or even a decent
> >> choice) to do some basic visualisation of the data. I have a set of
> >> x,y points with about 6 attributes. for example, one field/attribute
> >> is temperature, another is heat flow in x direction, another heat flow
> >> in y direction.
> >>
> >> I am failing to understand how to create for example a 'surface' or
> >> contour plot of the temperature, or an 'arrow plot' of the 2d heat
> >> flow.
> >
> > Are your points triangulated? That is do they have connectivity
> > information already, or are they just points with associated
> > data? Without connectivity information ParaView does not know
> > which points to interpolate between. The Delaunay2d filter will
> > add a very reasonable triangulation of your date.
> >
> > Paraview will then display the data as a surface.
> >
> > Because the csv reader does not know that let's say columns 3 and
> > four form a vector : Use the Calculator to combine fields into a
> > vector Field "3*iHat + Field 4 * jHat" should do it.
> >
> > Use the Glyph filter to display vectors.
> >
> >>
> >> My efforts are also frustrated by regular but inconsistent
> >> segmentation faults when I try to 'apply' filters.
> >>
> >> Ubuntu Linux x86_64
> >> paraview 3.14.1 installed from repositories
> >>
> >
> > I know inconsistent failures are very frustrating.
> >
> > If you can figure out when they occur we can help figure out why
> > they occur and hopefully fix the problem.
> >
> > Is your system fully updated?
> >
> > Have you installed any software not from the repositories like
> > graphics drivers?
> >
> > What graphics card do you have?
> >
> > What graphics driver do you have?
> >
> > Does Ubuntu have the equivalent of debuginfo packages? These
> > restore all the information that is useful only to developers to
> > the binaries and can make the output of a segfault _very_
> > informative.
> >
> >
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