[Paraview] Interpolation query

[David E DeMarle]

Is the data point or cell aligned?

The slice view does not interpolate point centered values across cells
like the 3D view does by design. Feel free to add a feature request to
the bug tracker if you want to add a mode that allows it to do so.

If the data is cell aligned, no views will do interpolation of
values/color within a cell. In a 3D view you can use the cell data to
point data filter and then color by the point aligned array if you
want that effect, but you will see averaging effects that are probably
similar to what you see with clean to grid.

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109



On Thu, Jun 17, 2010 at 3:01 AM, Daniele Avitabile
<d.avitabile at gmail.com> wrote:
> Hi all,
> I am using Paraview 3.8.0 on Mac OS X 10.5 (Leopard). I load a .vtk file
> with an evenly spaced 2D mesh (Structured Points) and associated scalars.
> Paraview loads it correctly, but the interpolation is rather gross: in a 2D
> view, I can see all the cells of my mesh. It would seem that Paraview
> computes the color map in each cell and does not interpolate between cells.
> As a result, I see a 2D pattern with a "grid texture" effect. I have also
> tried to tick the "Interpolate Scalars" box in the Display menu, to no
> avail. In the "style" submenu, the "Representation" and "Interpolation"
> selectors are greyed out.
> However, if I use "Clean to grid", Paraview does the interpolation, but the
> image loses brightness as well.
> Is there any way of using interpolation without passing via Clean to Grid?
> Thanks in advance.
> Daniele
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview
>
>