Anup, > >> 1. if the way of writing the sparse matrix on a .txt file is appropriate >> for post-processing in matlab, if not, please suggest >> a way; >> > > There are three print functions in the deal.II SparseMatrix. As explained > in the documentation > <https://www.dealii.org/developer/doxygen/deal.II/classSparseMatrix.html#af38b1c3e6200698c3d9ea5577436c61c>, > > you've chosen one that dumps the entire matrix with all zero entries not in > the sparsity pattern printed as well. This function > <https://www.dealii.org/developer/doxygen/deal.II/classSparseMatrix.html#a57ee42a70d603759e17b8a204af3c4d5> > > is probably the one that you want. > In addition to what J-P is saying, you can use SparseMatrix::print_formatted providing the zero string "0." instead of "" for exporting to some file "matrix.txt" and then load "matrix.txt" in Matlab.
> > >> 2. how should I make matlab understand the size of the sparse matrix and >> arrangement of the elements. >> > Using SparseMatrix::print you get a list of entries starting at zero instead of one. You can use the "Import Data" feature with suitable delimiters "( " and ")" to create a matrix in Matlab, load "matrix.txt" shift the first two columns by 1 via matrix(:,1)=matrix(:,1)+1 matrix(:,2)=matrix(:,2)+1 and convert this to a sparse matrix via spconvert(matrix) Best, Daniel -- 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. For more options, visit https://groups.google.com/d/optout.
