MatPermute

Creates a new matrix with rows and columns permuted from the original.

#include "petscmat.h" 
PetscErrorCode  MatPermute(Mat mat,IS row,IS col,Mat *B)

Collective on Mat

	mat	- the matrix to permute
	row	- row permutation, each processor supplies only the permutation for its rows
	col	- column permutation, each processor needs the entire column permutation, that is this is the same size as the total number of columns in the matrix

B -the permuted matrix

Mat MatPermute(Mat A,IS is1,IS is2)

MatPermute(A,is1,is2,&t); return t;