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 > <[email protected]>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 >> <[email protected]>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
