[vtkusers] problem with unstructured grid

[stefano mininel]

Don't know about the error messages but for visualization speed use vtkLODActor instead of
vtkActor.
Wireframe is probably not quicker in rendering than polygons. Nowadays graphic cards (as far as
I know) are maybe quicker in drawing polygons than wireframe.

Silke.Karner at ecs.steyr.com wrote:

> Hi!
> Hope somebody can help me. I have to write a tool to visualize very large
> data sets in the form of an unstructured grid. But the visualization runs
> very slow when you try to zoom or move it. And although it draws everything
> as it should, I get an error message:
>
> ---------
> ERROR In vtkFieldDataToAttributeDataFilter.cxx, line 345
> vtkFieldDataToAttributeDataFilter (0x20327f38): Can't find array/component
> requested
> ERROR In vtkWarpVector.cxx, line 61
> vtkWarpVector (0x20337038): No input data
> --------------
>
> At the moment eyerything is drawn in wireframe, and it's slow. But later it
> should be hidden-line or coloured. I have not tried how slow it'll be then.
> I post a part of the code. Maybe I have understand something wrong cause
> I'am a newbie to vtk and tcl/tk.
>
> Thanks for any help
> Silke  ...(CUT)