[Paraview] How to color by Cell Data

[Jérôme]

Hi,
I noted this problem a few days ago.
A *really* simple example:
- Add a SphereSource
- Connect to a "Generate Ids" filter
- Update: The information panel shows a 'Ids' array for points and for
cells, but
the "Color by" doesn't give the choice of cell array.

Jerome

2010/2/28 Utkarsh Ayachit <utkarsh.ayachit at kitware.com>

> That's weird, your cell array should have been listed in the Color By
> menu. Is it possible to share the data or a small sample to reproduce
> the issue?
>
> Utkarsh
>
> On Sat, Feb 27, 2010 at 11:09 AM, Michael Jackson
> <mike.jackson at bluequartz.net> wrote:
> > I have a triangle surface mesh that contains Cell based RGB attribute
> array.
> > I would like to color by that array, ie, not using a Lookup table or
> > interpolation. When I load my data set the cell data is listed, but in
> the
> > "color by" drop down list the scalar array is not listed as a choice.
> >
> >  On a "whim" I then ran the "Cell Data to Point Data" filter on the data.
> At
> > that point I was able to select the scalar array to "Color By" and the
> > surface mesh now has the correct colors.
> >
> >  I know if I were to code this up in straight VTk I can set the rendering
> to
> > be by Cells:
> >
> >  vtkPolyDataMapper *cubeMapper = vtkPolyDataMapper::New();
> >  cubeMapper->SetInput(filter->GetOutput());
> >  cubeMapper->SetScalarVisibility(1);
> >  cubeMapper->SetScalarModeToUseCellData();
> >
> > How do I get the same effect in ParaView?
> >
> > Thanks
> > _________________________________________________________
> > Mike Jackson                  mike.jackson at bluequartz.net
> > BlueQuartz Software                    www.bluequartz.net
> > Principal Software Engineer                  Dayton, Ohio
> >
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