[vtkusers] [Paraview] vtkPolydata vs. vtkUnstructuredGrid

[David Thompson]

Hi Aurélien,

The conceptual difference between the two is that unstructured grids can have volumetric cells while polydata cannot.

	David

PS. Eliminating paraview list from reply... please don't mail both lists.

On Jul 30, 2014, at 3:45 PM, Aurélien Marsan <aur.marsan at gmail.com> wrote:

> Dear Paraview users, and VTK users
> 
> I want to build a vtkUnstructuredGrid from several numpy arrays, which contains the points coordinates, the cells, cells locations, cells types etc... 
> So : I have all informations that are needed. 
> 
> vtkPolyData seems a lot easier to define through a python script. 
> 
> But : what is the fundamental difference between vtkPolyData and vtkUnstructuredGrid ? 
> What should be the criterion in order to choose on of these two types ? 
> 
> Many thanks in advance, 
> Regards,
> 
> Aurélien 
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