[vtkusers] Scalar data on 2-D plane and how to "elevate" this scalar data

[Oliver Kania]

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.
>
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