Package jline.lib.fjcodes

Class FJUtils

java.lang.Object

jline.lib.fjcodes.FJUtils

public final class FJUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static Matrix	build_index(int m, int cr)	Build combinatorial index patterns.
static double[]	getRowAsArray(Matrix matrix, int row)	Extract a row from a Matrix as a double[].
static Matrix	kronsum(Matrix A, Matrix B)	Compute Kronecker sum of two matrices.
static void	setSubMatrix(Matrix target, int startRow, int startCol, Matrix source)	Copy a submatrix into a target matrix at specified position.
static int	vectmatch(double[] row, Matrix matrix)	Find the row index in a matrix that matches a given row vector.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

kronsum

public static Matrix kronsum(Matrix A,
 Matrix B)

Compute Kronecker sum of two matrices. Returns: A (+) B = A (x) I + I (x) B

vectmatch

public static int vectmatch(double[] row,
 Matrix matrix)

Find the row index in a matrix that matches a given row vector. Returns 1-based index (MATLAB convention) or -1 if not found.

build_index

public static Matrix build_index(int m,
 int cr)

Build combinatorial index patterns.

getRowAsArray

public static double[] getRowAsArray(Matrix matrix,
 int row)

Extract a row from a Matrix as a double[].

setSubMatrix

public static void setSubMatrix(Matrix target,
 int startRow,
 int startCol,
 Matrix source)

Copy a submatrix into a target matrix at specified position.