Hello everyone! This is deal.II newsletter #108. It automatically reports recently merged features and discussions about the deal.II finite element library.
## Below you find a list of recently proposed or merged features: #9454: check MPI return value in one location (proposed by tjhei) https://github.com/dealii/dealii/pull/9454 #9453: Fix a few misprints in the SolutionTransfer documentation. (proposed by simonsticko; merged) https://github.com/dealii/dealii/pull/9453 #9451: step-47: switch the jump and average in one term of the scheme. (proposed by sophy1029) https://github.com/dealii/dealii/pull/9451 #9450: Avoid a few warnings about unused variables. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9450 #9449: Avoid an internal compiler error in gcc 7.4.0. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9449 #9448: Update GridGenerator::half_hyper_shell documentation for correctness (proposed by GrahamBenHarper; merged) https://github.com/dealii/dealii/pull/9448 #9447: Update PolynomialsAdini to derive from ScalarPolynomialsBase (proposed by GrahamBenHarper; merged) https://github.com/dealii/dealii/pull/9447 #9446: Add ParameterHandler::declare_entry flag to append pattern description to entry documentation (proposed by elauksap) https://github.com/dealii/dealii/pull/9446 #9445: Add ParameterHandler::subsection_path_exists (proposed by elauksap; merged) https://github.com/dealii/dealii/pull/9445 #9444: Fix a few parallel::fullydistributed tests (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9444 #9443: make two ParameterHandler members local to .cc (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9443 #9441: Remove fully_distributed_tria_util files (proposed by GrahamBenHarper; merged) https://github.com/dealii/dealii/pull/9441 #9437: Update uses of compute() to evaluate() (proposed by GrahamBenHarper; merged) https://github.com/dealii/dealii/pull/9437 #9436: Remove unused included file from step-6 (proposed by GrahamBenHarper; merged) https://github.com/dealii/dealii/pull/9436 #9435: Avoid using deprecated functions (proposed by bangerth) https://github.com/dealii/dealii/pull/9435 #9434: Further changes to ParameterHandler::parse_input_from_json (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9434 #9433: Fix gcc 4.9.4 warning (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9433 #9432: Fix remaining issues for #9195 (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9432 #9431: Fix particle probability density mpi problem (proposed by MFraters; merged) https://github.com/dealii/dealii/pull/9431 #9430: Fix ParameterHandler::read_xml_recursively for actions (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9430 #9429: Add python bind for compute_aspect_ratio_of_cells (proposed by agrayver) https://github.com/dealii/dealii/pull/9429 #9428: Add python wrappers for Quadrature (proposed by agrayver) https://github.com/dealii/dealii/pull/9428 #9423: removes an unwanted include file manifold_lib.h from step-2 (proposed by krishnakumarg1984; merged) https://github.com/dealii/dealii/pull/9423 #9422: Restrict fe_series_02 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9422 #9421: Improve an error message. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9421 #9419: Remove seemingly unused code in fe_poly.cc (proposed by GrahamBenHarper; merged) https://github.com/dealii/dealii/pull/9419 #9417: Clarify what the graph represents. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9417 #9416: Mention namespaces in step-20. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9416 #9415: Introduce GeometryInfo::face_indices() (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9415 #9414: step-12: use add_data_vector with DoFHandler (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9414 #9413: Add a note to two .h files about the design pattern used there. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9413 #9412: remove unused variable in step-12 (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9412 #9411: Augment introduction to step-7. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9411 #9410: Use std::to_string() instead of boost lexical_cast. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9410 #9409: Update the documentation of int_to_string() and to_string(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9409 #9407: make_flux_sparsity_pattern with flux couplings on a subset of the faces (proposed by simonsticko; merged) https://github.com/dealii/dealii/pull/9407 #9402: Rename step-71 to step-47. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/9402 #9388: Implement GridGenerator::replicate_triangulation(). (proposed by drwells; merged) https://github.com/dealii/dealii/pull/9388 #9362: New p:f:t tests (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9362 #9309: FESeries: Added features to precalculate all matrices and serialize them. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/9309 #9263: ParameterHandler in unsorted order (proposed by elauksap; merged) https://github.com/dealii/dealii/pull/9263 #9207: Implement the solution of complex linear systems using UMFPACK. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9207 #9195: Create new dealii::Triangulation::create_triangulation() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9195 #9171: Symbolic function. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/9171 #9156: ECL: add partitioners (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9156 ## And this is a list of recently opened or closed discussions: #9452: Refactor Utilities::MPI::compute_n_point_to_point_communications (opened) https://github.com/dealii/dealii/issues/9452 #9442: Issue with boundary indicator in GridGenerator::half_hyper_shell (opened and closed) https://github.com/dealii/dealii/issues/9442 #9440: Missing file fully_distributed_tria_util.h (opened and closed) https://github.com/dealii/dealii/issues/9440 #9439: Compatibility issues with DoFTools::count_dofs_per_block() (opened) https://github.com/dealii/dealii/issues/9439 #9438: PolynomialsAdini does not derive from ScalarPolynomialsBase (opened and closed) https://github.com/dealii/dealii/issues/9438 #9427: ParameterHandler::add_parameter () not working properly for... (opened and closed) https://github.com/dealii/dealii/issues/9427 #9426: Dealing with clamped boundary conditions in step-47 (opened) https://github.com/dealii/dealii/issues/9426 #9425: Inconsistency in polynomial classes (opened) https://github.com/dealii/dealii/issues/9425 #9424: [Step-6] Unexplained new header file inclusion (opened and closed) https://github.com/dealii/dealii/issues/9424 #9420: TEST_PICKUP_REGEX is too generous (opened) https://github.com/dealii/dealii/issues/9420 #9418: Fix remaining issues for #9195 (opened and closed) https://github.com/dealii/dealii/issues/9418 #9406: [Step-20] Reorganise prior tutorial contents since the input dependency for step-20 is incorrect/incomplete (closed) https://github.com/dealii/dealii/issues/9406 #8958: How to deal with MPI P2P communication using the same MPI tag (closed) https://github.com/dealii/dealii/issues/8958 #6159: An efficient function to replicate triangulations for geometries with repeated unit structure (closed) https://github.com/dealii/dealii/issues/6159 A list of all major changes since the last release can be found at https://www.dealii.org/developer/doxygen/deal.II/recent_changes.html. 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