PETSc version 3.17.0
Fix/Edit manual page

DMPlexComputeClementInterpolant

This function computes the L2 projection of the cellwise values of a function u onto P1, and stores it in a Vec.

Synopsis

#include "petscdmplex.h"   
PetscErrorCode DMPlexComputeClementInterpolant(DM dm, Vec locX, Vec locC)
Collective on dm

Input Parameters

dm - The DM
locX - The coefficient vector u_h

Output Parameter

locC - A Vec which holds the Clement interpolant of the function

Notes

u_h(v_i) = \sum_{T_i \in support(v_i)} |T_i| u_h(T_i) / \sum_{T_i \in support(v_i)} |T_i| where |T_i| is the cell volume

See Also

DMProjectFunction(), DMComputeL2Diff(), DMPlexComputeL2FieldDiff(), DMComputeL2GradientDiff()

Level

developer

Location

src/dm/impls/plex/plexfem.c
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages