[vtkusers] Unstructured grid to structured grid?
chris.marsh at usask.ca
Mon Sep 15 18:23:13 EDT 2014
Thanks David, this looks perfect.
On Mon, Sep 15, 2014 at 4:10 PM, David Gobbi <david.gobbi at gmail.com> wrote:
> Hi Chris,
> This sounds like a job for vtkProbeFilter. The probe filter takes two
> the "input" and the "source". The idea is that it resamples the scalars
> the "source" onto the geometry of the "input". So, in this case, the
> is your unstructured grid, and the "input" is any vtkImageData that has the
> origin, spacing, and extent that you want to use for the regridding. The
> output of vtkProbeFilter will be an image that has the same geometry as
> the input, but that has pixel values that have been interpolated from your
> unstructured grid. You should be able to find several examples on the
> - David
> On Mon, Sep 15, 2014 at 3:59 PM, chrism <chris.marsh at usask.ca> wrote:
> > Is it possible to (easily) convert an unstructured grid to a structured
> > (Image data)?
> > Is unstructured -> polydata -> image data the only way? If so, how
> > (http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/DataSetSurfaceFilter
> > Ultimately, the unstructured grid represents a topography, and I am
> > to 'rasterize' it for use in a GIS.
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