On Sun, Aug 14, 2011 at 03:23, David Ketcheson <david.ketcheson at kaust.edu.sa > wrote:
> For plotting purposes, linear interpolation is fine. There are other > things we could do with higher order interpolation, but they're not critical > yet. I'm less concerned with the order of the basis functions than with the possible presence of a nonlinear reconstruction. For any order polynomials, interpolation is still a linear operator (could be written as a matrix). If instead the interpolation involved a TVD or WENO reconstruction, or if it involved coarse level basis functions that were upwinded using a local characteristic decomposition, then it could not be written as a matrix and there would be extra semantics associated with transferring solution values versus increments or residuals. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20110814/ce78cfbc/attachment.html>
