MatFDColoringApply#
Given a matrix for which a MatFDColoring context has been created, computes the Jacobian for a function via finite differences.
Synopsis#
#include "petscmat.h" 
PetscErrorCode MatFDColoringApply(Mat J, MatFDColoring coloring, Vec x1, void *sctx)
Collective
Input Parameters#
- J - location to store Jacobian 
- coloring - coloring context created with - MatFDColoringCreate()
- x1 - location at which Jacobian is to be computed 
- sctx - context required by function, if this is being used with the SNES solver then it is - SNESobject, otherwise it is null
Options Database Keys#
- -mat_fd_type - “wp” or “ds” (see - MATMFFD_WPor- MATMFFD_DS)
- -mat_fd_coloring_view - Activates basic viewing or coloring 
- -mat_fd_coloring_view draw - Activates drawing of coloring 
- -mat_fd_coloring_view ::ascii_info - Activates viewing of coloring info 
See Also#
Mat, MatFDColoring, MatFDColoringCreate(), MatFDColoringDestroy(), MatFDColoringView(), MatFDColoringSetFunction(), MatFDColoringSetValues()
Level#
intermediate
Location#
Implementations#
MatFDColoringApply_BAIJ() in src/mat/impls/aij/mpi/fdmpiaij.c
MatFDColoringApply_AIJ() in src/mat/impls/aij/mpi/fdmpiaij.c
Index of all MatFD routines
Table of Contents for all manual pages
Index of all manual pages