com.numericalmethod.suanshu.matrix.doubles.operation

Class MatrixUtils

java.lang.Object

com.numericalmethod.suanshu.matrix.doubles.operation.MatrixUtils

public class MatrixUtils
extends java.lang.Object

These are the utility functions to apply to matrices.

Constructor Summary

Constructors

Constructor and Description
MatrixUtils()

Method Summary

Modifier and Type	Method and Description
static int[]	colSums(MatrixTable A) Get the column sums.
static int[]	rowSums(MatrixTable A) Get the row sums.
static double[]	to1DArray(MatrixTable A) Get all matrix entries in the form of an 1D double[].
static double[][]	to2DArray(MatrixTable A) Get all matrix entries in the form of a 2D double[][] array.
static java.lang.String	toString(MatrixTable A) Get the String representation of a matrix.

Methods inherited from class java.lang.Object

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

Constructor Detail

MatrixUtils

public MatrixUtils()

Method Detail

rowSums

public static int[] rowSums(MatrixTable A)

Get the row sums.

Parameters:

A - a matrix

Returns:

the row sums

colSums

public static int[] colSums(MatrixTable A)

Get the column sums.

Parameters:

A - a matrix

Returns:

the column sums

to1DArray

public static double[] to1DArray(MatrixTable A)

Get all matrix entries in the form of an 1D double[].

Parameters:

A - a matrix

Returns:

all matrix entries in double[]

to2DArray

public static double[][] to2DArray(MatrixTable A)

Get all matrix entries in the form of a 2D double[][] array.

Parameters:

A - a matrix

Returns:

all matrix entries in double[][]

toString

public static java.lang.String toString(MatrixTable A)

Get the String representation of a matrix.

Parameters:

A - a matrix

Returns:

the String representation of a matrix