Hi Wolfgang, On Monday, December 18, 2017 at 1:45:15 AM UTC+1, Wolfgang Bangerth wrote: > > I think your observation of negative values is an interesting one (and > surprising one, for many). Would you be interested in writing a couple of > paragraphs about time step choice for the introduction of this program? >
Yes, I will do that. I could either enhance the introduction, or write a new paragraph in the 'Possibilities for extensions' sections. I guess the latter option would be the better one. I could provide a code snippet on how to check for positivity preservation, but for that I need a way to access the non-diagonal entries of a SparseMatrix. Do you have an idea on how to do it in a fast way? Best, Marc -- 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.
