[vtkusers] Scalar data on 2-D plane and how to

[Oliver Kania]

Hello,
What do you mean by "vti file" ?

Best regards,
Oliver

2008/8/5 <psc28 at cornell.edu>

> Hey Oliver,
>
> Could you send me an example vti file to model my program after?
>
> Thanks
>
> Patrick
>
>
> Oliver Kania-4 wrote:
> >
> > Hello,
> > you could create a vtkImageData from your scalar data and then use
> > vtkWarpScalar and vtkBandedContourFilter (for 3D Contours) or something
> > similar.
> > You will not see a plane, only the elevated data.
> > See the examples for vtkWarpScalar or BandedContourFilter.
> >
> > Best regards,
> > Oliver
> >
> > 2008/8/4 pcalhoun <psc28 at cornell.edu>
> >
> >>
> >> Hello all,
> >>
> >> I have been writing a C++ program that converts dat files that I have
> >> been
> >> working with into vtk format (vtu in particular.) These dat files
> contain
> >> a
> >> certain resolution of points on a bounded 2-D plane. This plane also has
> >> scalar data associated with each point. My ultimate goal for this
> program
> >> is
> >> to show this data as a 3-D surface (where the 3rd dimension is derived
> >> from
> >> the scalar component and is perpendicular to the original plane.)
> >>
> >> When writing my vtu files, I have mainly been using Vtk_Pixel (8) as
> well
> >> as
> >> Vtk_Quad (9) to create the cells that make up the entire surface.
> >> However,
> >> even though the program creates the surface that I desire, it also
> >> creates
> >> a
> >> plane under the new elevated surface. Therefore, I can't get a good look
> >> at
> >> the under side of the new surface. (if the images are too hard to
> >> mentally
> >> visualize I can post a couple images if that helps.) Im not sure if this
> >> added plane (which just so happens to be the plane that would be plotted
> >> if
> >> the scalar data wasn't "elevated") is an artifact of vtu files or
> >> Vtk_Pixels
> >> or something else I over looked.
> >>
> >> One possible solution that I arrived at is that I could simply make a
> vtk
> >> file that outputs the plane and contains the scalar data at each point
> >> (thereafter I can "elevate" the scalar data with a function built into
> >> the
> >> visualization program I'm using.) I attempted this by trying to add
> >> <PointData> ... </PointData> into my vtu files but I could not get the
> >> syntax to work out. If someone has an example vtu file that has the
> right
> >> syntax to accomplish this, it would be very helpful if I could take a
> >> look
> >> at it.
> >>
> >> If you need more information about my problem or have an suggestions let
> >> me
> >> know. Thanks
> >>
> >> Cheers,   :drunk:
> >>
> >> Patrick
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/Scalar-data-on-2-D-plane-and-how-to-%22elevate%22-this-scalar-data-tp18812329p18812329.html
> >> Sent from the VTK - Users mailing list archive at Nabble.com.
> >>
> >> _______________________________________________
> >> This is the private VTK discussion list.
> >> Please keep messages on-topic. Check the FAQ at:
> >> http://www.vtk.org/Wiki/VTK_FAQ
> >> Follow this link to subscribe/unsubscribe:
> >> http://www.vtk.org/mailman/listinfo/vtkusers
> >>
> >
> > _______________________________________________
> > This is the private VTK discussion list.
> > Please keep messages on-topic. Check the FAQ at:
> > http://www.vtk.org/Wiki/VTK_FAQ
> > Follow this link to subscribe/unsubscribe:
> > http://www.vtk.org/mailman/listinfo/vtkusers
> >
> >
> Quoted from:
>
> http://www.nabble.com/Scalar-data-on-2-D-plane-and-how-to-%22elevate%22-this-scalar-data-tp18812329p18825283.html
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20080806/4530dadb/attachment.htm>