petsc-3.10.0 2018-09-12
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DMProjectFunction

This projects the given function into the function space provided.

Synopsis

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMProjectFunction(DM dm, PetscReal time, PetscErrorCode (**funcs)(PetscInt, PetscReal, const PetscReal [], PetscInt, PetscScalar *, void *), void **ctxs, InsertMode mode, Vec X)

Input Parameters

dm - The DM
time - The time
funcs - The coordinate functions to evaluate, one per field
ctxs - Optional array of contexts to pass to each coordinate function. ctxs itself may be null.
mode - The insertion mode for values

Output Parameter

X -vector

Calling sequence of func

   func(PetscInt dim, PetscReal time, const PetscReal x[], PetscInt Nf, PetscScalar u[], void *ctx);

dim - The spatial dimension
x - The coordinates
Nf - The number of fields
u - The output field values
ctx - optional user-defined function context

See Also

DMComputeL2Diff()

Level

developer

Location

src/dm/interface/dm.c

Examples

src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex62.c.html
src/snes/examples/tutorials/ex77.c.html
src/ts/examples/tutorials/ex11.c.html
src/ts/examples/tutorials/ex48.c.html

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