Chenchen, here is the function you want to use to do what Jean-Paul advise you to do http://dealii.org/8.5.0/doxygen/deal.II/classDataOut.html#a5eb51872b8736849bb7e8d2007fae086 You need to choose n_subdivisions > 1.
Best, Bruno On Thursday, September 28, 2017 at 4:07:59 PM UTC-4, Jean-Paul Pelteret wrote: > > Dear Chenchen, > > With the way that we output data, Paraview cuts each quadrilateral into > two triangles for the purpose of visualisation. So what you see is a linear > interpolation of the data, and not a bilinear interpolation (which I’m > guessing you were expecting *if* you used FE_Q elements). There is little > that you can do other than to refine your solution until you just don’t see > these artefacts anymore. > > I hope that this answers your question. > > Kind regards, > Jean-Paul > > On 28 Sep 2017, at 21:54, Chenchen Liu <[email protected]> wrote: > > Chenchen > > > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
