PetscDTReconstructPoly#

create matrix representing polynomial reconstruction using cell intervals and evaluation at target intervals

Synopsis#

#include "petscdt.h" 
PetscErrorCode PetscDTReconstructPoly(PetscInt degree, PetscInt nsource, const PetscReal sourcex[], PetscInt ntarget, const PetscReal targetx[], PetscReal R[])

Not Collective

Input Parameters#

degree - degree of reconstruction polynomial
nsource - number of source intervals
sourcex - sorted coordinates of source cell boundaries (length nsource+1)
ntarget - number of target intervals
targetx - sorted coordinates of target cell boundaries (length ntarget+1)

Output Parameter#

R - reconstruction matrix, utarget = sum_s R[t*nsource+s] * usource[s]

See Also#

PetscDTLegendreEval()

Level#

advanced

Location#

src/dm/dt/interface/dt.c

Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages