Try the Cell Centers filter. Out.vtu --> Cell Centers --> Glyph. Pat
On Tue, Apr 16, 2013 at 10:10 PM, <pie...@redpanda.nl> wrote: > Hi Pat, Berk, > > Thanks for your replies. Displaying the cellNormals works fine now, but I > still can't select the normals computed in my Python script from the > dropdown menus in the Glyph filter. > > I uploaded the relevant .VTU file to my web space, you can find it at > http://redpanda.nl/Out.vtu (look for the data named "Normal", it has X, Y > and Z components). > > Could you take a look at it? > > Best, > Pieter > > > ParaView does a weird thing, in the "Color By" drop down menu, it show an > > array named "cellNormals" but this array doesn't actually exist on the > > data > > object, and it doesn't appear in the information tab. So, as Berk said, > > you should apply the Generate Surface Normals filter, and make sure you > > check the "Compute Cell Normals" check box. Then you can use the "Cell > > Centers" to generate point data at the cell centers. Then you can use > the > > Glyph filter to draw the arrows for the cell normals. > > > > Pat > > > > > > On Tue, Apr 16, 2013 at 10:03 AM, Berk Geveci > > <berk.gev...@kitware.com>wrote: > > > >> Does the file actually contain normals? I am guessing not. In that case, > >> do: > >> > >> Extract Surface > >> Generate Surface Normals > >> Glyph > >> > >> If you had a vtp file (polydata) instead of vtu (unstructured grid), you > >> wouldn't need to Extract Surface. > >> > >> -berk > >> > >> > >> On Mon, Apr 15, 2013 at 7:27 PM, Pieter Barendrecht > >> <pie...@redpanda.nl>wrote: > >> > >>> Hi all, > >>> > >>> I have just imported a 3D parametric surface in Paraview (from a .VTU > >>> file generated by a Python script), and I'm wondering how to display > >>> the > >>> cellNormals as actual vectors. Since a cellNormal has an X, Y and Z > >>> component, it should be possible to use these three scalar values to > >>> create > >>> a vector, pointing from the corresponding cell. > >>> > >>> I know I can create a vector field with the Glyph function, but I'm not > >>> sure how to continue from there. I cannot select any Scalars or Vectors > >>> from the two dropdown menus/lists (they are enabled but there is > >>> nothing to > >>> select). > >>> > >>> Any ideas on how to proceed would be very welcome! > >>> > >>> Best, > >>> Pieter > >>> > >>> PS: I'm using Paraview 3.98.1 on a Linux machine. > >>> _______________________________________________ > >>> 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 > >>> > >> > >> > >> _______________________________________________ > >> 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 > >> > >> > > > _______________________________________________ > 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 >
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