Thanks Wolfgang, I get the point! Best M. Wolfgang Bangerth <bange...@colostate.edu> 于2019年5月17日周五 上午1:21写道：
> On 5/13/19 8:45 PM, llf m wrote: > > I want to output the strain tensor and I use the > *DataPostprocessorTensor > > *which described in > > > https://dealii.org/developer/doxygen/deal.II/classDataPostprocessorTensor.html > . > > But as I am dealing with a vector-valued problem, > > how can I pass the displacement component of the solution to *DataOut* > object? > > You can't. You will always pass *all* solution variables associated with > one > DoFHandler to DataOut, and DataOut will always pass all solution variables > on > to the DataPostprocessor object. The question is simply what you do in a > DataPostprocessor object with this information. You are, for example, free > to > ignore certain components of the input vector. If you just copied the > strain > postprocessor, this is probably exactly what happened: You just computed > the > strain from the first dim vector components of your solution, and whether > or > not there are additional vector components is none of your concerns -- > i.e., > you are simply ignoring them. > > Best > W. > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bange...@colostate.edu > www: http://www.math.colostate.edu/~bangerth/ > > -- > 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 dealii+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/27d0ba99-fa31-8cf8-c392-fec78f831481%40colostate.edu > . > For more options, visit https://groups.google.com/d/optout. > -- 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 dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAP940LHb048KigqAG5mTQu9U5T4ttvF%2BdhD%2BvQE4stsyoNtPJA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
