petsc-3.6.4 2016-04-12
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MatCreateLaplacian

 Create the matrix Laplacian, with all values in the matrix less than the tolerance set to zero

Synopsis

#include <petscmat.h> 
PetscErrorCode MatCreateLaplacian(Mat A, PetscReal tol, PetscBool weighted, Mat *L)

Input Parameters

A - The matrix
tol - The zero tolerance
weighted - Flag for using edge weights

Output Parameters

L -The graph Laplacian matrix

See Also

MatChop()

Level:intermediate
Location:src/mat/order/spectral.c
Index of all MatOrderings routines
Table of Contents for all manual pages
Index of all manual pages