Confusingly, there are two versions of MayaVi. MayaVi 1 and MayaVi2. They didn't have a brew cask, so I didn't look at it so far. I also don't want to learn yet another full-blown python library commands just for a one-off visualization exercise. I really like Praveen's solution, but again gnuplot is yet another plotting language that I need to learn.
Can matplotlib import .vtk files and produce time-step animations? What an irony that 1D visualisation is harder than 2D (for non-technical reasons) :). Regards, Krishna On Mon, 16 Mar 2020 at 16:30, Bruno Turcksin <bruno.turck...@gmail.com> wrote: > Krishna, > > I am not an expert on visualization but I know mayavi ( > https://docs.enthought.com/mayavi/mayavi/) can read vtk and vtu. This is > more geared towards python users though. If you think that the > documentation is lacking, feel free to open a pull request ;-) > > Best, > > Bruno > On 3/16/20 12:14 PM, Krishnakumar Gopalakrishnan wrote: > > Hi Bruno, > > Thanks for this information. > > I am genuinely curious to know about these other programs that are capable > of reading .vtk and .vtu files. Everyone says that these files are so > standard, and claim that there are a lot of tools that can read them. I > could not find really find any general purpose visualisation software > outside of VisIT and Paraview that reads these files. There are also > couple of medical simulation visualizers/toolkits that again come out of > kitware stables. For an open-source framework like the VTK with a business > -riendly BSD license, it is rather surprising that no other company or > university has built a competing product. > > > > * Some people also use vtk to transfer data between programs. * > > What could be examples of such work flow, especially in a 1D context? For > all practical purposes, 1D .vtu/.vtk files seem useless. At least could we > have a warning/note block of text in the write_vtu() and write_vtk() pages > of the documentation that 1D visualisation using .vtk is a non-starter? I > have seen many such notes calling for the readers' attention. I spent > nearly two days under the belief that a 1D simulation shoud just be a walk > in the park for the two vtk-based heavyweights. > > > Regards, > Krishna > > > > > On Mon, 16 Mar 2020 at 15:51, Bruno Turcksin <bruno.turck...@gmail.com> > wrote: > >> Krishna, >> >> VisIt and Paraview are just two of many visualization software that can >> read .vtk and .vtu files. Some people also use vtk to transfer data between >> programs. Why should we restrict the output because two visualization tools >> don't support 1D? >> >> Best, >> >> Bruno >> >> On Monday, March 16, 2020 at 11:37:57 AM UTC-4, Krishnakumar >> Gopalakrishnan wrote: >>> >>> Hi Praveen, >>> >>> Thank you. That really helps. I shall definitely check it out and >>> report back. I just have standard Q1 linear elements in a unit (0,1) >>> domain, solving a standard 1D diffusion problem. >>> >>> Are we all agreeing that sophisticated VisIT and Paraview cannot produce >>> simple 1D visualizations/animations? If so, there must be an Assert() >>> pre-condition >>> check for the DataOut::write_vtk() and DataOut::write_vtu() functions >>> of the library which return an exception with "dimension not implemented" >>> error. >>> >>> Regards, >>> Krishna >>> >>> >>> >>> On Mon, 16 Mar 2020 at 15:31, Praveen C <prav...@tifrbng.res.in> wrote: >>> >>>> I have a 1d example here >>>> >>>> https://bitbucket.org/cpraveen/deal_ii/src/master/dg/1d_scalar_legendre/ >>>> >>>> The blank lines in the output file denote different elements. It is not >>>> necessary to sort if you use gnuplot to plot it. gnuplot makes one curve >>>> for the solution in each element. If the FE space is continuous, you will >>>> get a plot which is globally continuous. >>>> >>>> Best >>>> praveen >>>> >>>> On 16-Mar-2020, at 8:50 PM, Krishnakumar Gopalakrishnan < >>>> krish...@vt.edu> wrote: >>>> >>>> Hi Praveen, >>>> >>>> Thanks for your reply. Yes, I had success with gnuplot, but the >>>> following were the difficulties. >>>> >>>> 1. Weirdly, the x-axis co-ordinates of the mesh are not sorted in a >>>> particular order (they appear rather randomly, arranged in groups of 2 >>>> rows with blank lines between them). >>>> 2. The time-animation is not easy to visualize. Paraview has a >>>> nice animation player for such sets of .vtu files. >>>> >>>> Is there some trick to visualize time-series of 1D spatial data? >>>> >>>> >>>> Regards, >>>> Krishna >>>> >>>> >>>> -- >> 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 a topic in the >> Google Groups "deal.II User Group" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/dealii/AFeah4OhYe8/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> dealii+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/dealii/f100beb0-9b91-482e-8e70-16939014ef61%40googlegroups.com >> <https://groups.google.com/d/msgid/dealii/f100beb0-9b91-482e-8e70-16939014ef61%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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 a topic in the > Google Groups "deal.II User Group" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/dealii/AFeah4OhYe8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > dealii+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/CABvf3kZa%2B__LvjON9AwH_XKw93fYyUDO7hNHvYRz%3D3Jzg9vs8g%40mail.gmail.com > <https://groups.google.com/d/msgid/dealii/CABvf3kZa%2B__LvjON9AwH_XKw93fYyUDO7hNHvYRz%3D3Jzg9vs8g%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- > 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 a topic in the > Google Groups "deal.II User Group" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/dealii/AFeah4OhYe8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > dealii+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/c3ef2bdf-8a3b-01c2-1065-18b4a3c1eeae%40gmail.com > <https://groups.google.com/d/msgid/dealii/c3ef2bdf-8a3b-01c2-1065-18b4a3c1eeae%40gmail.com?utm_medium=email&utm_source=footer> > . > -- 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. 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