> Can one assume that the numbering of the support points for FE_Q and FE_DGQ > elements coincides for equal order interpolation?
I wouldn't. Also, the FE_Q has the ability to do Lagrange interpolation polynomials for other than equidistant interpolation points, which might make things a bit more complicated. That said, I wouldn't object to it if you wanted to implement this functionality. I guess the function in FETools that you were already pointed to does the job as well. Best W. -- ------------------------------------------------------------------------- Wolfgang Bangerth email: [email protected] www: http://www.math.tamu.edu/~bangerth/ _______________________________________________ dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii
