Re: [deal.II] Map from dof index to vertex index

2021-07-19 Thread Wolfgang Bangerth
On 7/17/21 6:39 AM, Kaushik Das wrote: I am assuming that the ordering/sequence of dofs that we get from cell->get_dof_indices() will always be the same as the ordering/sequence of vertexes in a cell, that is the 'canonical' ordering given in GeometryInfo. Will that be true for linear hex Q1

Re: [deal.II] Map from dof index to vertex index

2021-07-17 Thread Kaushik Das
Thank you, Prof. Bangerth. Yes, I am using Q1 elements. I was able to do it following your hint. I am assuming that the ordering/sequence of dofs that we get from cell->get_dof_indices() will always be the same as the ordering/sequence of vertexes in a cell, that is the 'canonical' ordering given

Re: [deal.II] Map from dof index to vertex index

2021-07-15 Thread Jean-Paul Pelteret
To add to what Wolfgang has already said, there’s this entry in our FAQ on this topic (well, the reverse mapping from vertex to DoF): https://github.com/dealii/dealii/wiki/Frequently-Asked-Questions#how-do-i-get-the-degree-of-freedom-indices-at-vertices

Re: [deal.II] Map from dof index to vertex index

2021-07-15 Thread Wolfgang Bangerth
On 7/15/21 3:09 PM, Kaushik Das wrote: Is there a way to know which dof_index is located at which vertex. For example, I want to "map" a dof_index that I get from affine_constrains.get_constraint_entries(line); to a vertex index that are in the range of triangulation.begin_vertex() and

[deal.II] Map from dof index to vertex index

2021-07-15 Thread Kaushik Das
Hello, Is there a way to know which dof_index is located at which vertex. For example, I want to "map" a dof_index that I get from affine_constrains.get_constraint_entries(line); to a vertex index that are in the range of triangulation.begin_vertex() and triangulation.end_vertex(). Thank