On 09/19/2016 03:15 PM, Jiaqi ZHANG wrote:

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I was trying to get the values of the solution polynomial in the neighbor cells in DG, for example, I want to compute View the MathML source where p_i are the solution polynomials of the neighbors, \Delta_0 is the current cell. I cannot find any function to do this in Finite elements <http://www.dealii.org/8.4.1/doxygen/deal.II/group__feall.html> ยป Finite element access/FEValues classes <http://www.dealii.org/8.4.1/doxygen/deal.II/group__feaccess.html> How should I implement this in deal.II?

`You mean that you want to *extend the solution from the neighboring cell`

`to the current cell*? In general, the polynomials that describe the`

`solution are of course only defined on one cell, and there is a separate`

`polynomial description on the neighboring cell.`

Best Wolfgang -- ------------------------------------------------------------------------ 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

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