jminhep.utils

Class VEC

java.lang.Object

jminhep.utils.VEC

public class VEC
extends Object

Constructor Summary

Constructors

Constructor and Description
VEC()

Method Summary

Modifier and Type	Method and Description
static String	getMatrix(int n1, int n2, double[][] m, int d, int w) Method for filling string with a matrix Based on ER Harold, "Java I/O", O'Reilly, around p.
static String	getSpaces(int n)
static double[][]	GetSummaryData(int nrow, int ncol, double[][] A)
static void	inSort(double[] invect) Method to sort a double vector, by inefficient straight insertion See section 8.1, p.
static void	printMatrix(int n1, int n2, double[][] m, int d, int w) Method for printing a matrix Based on ER Harold, "Java I/O", O'Reilly, around p.
static void	printMatrix(int n1, int n2, int[][] m, int d, int w) Method for printing an integer matrix Based on ER Harold, "Java I/O", O'Reilly, around p.
static void	printVect(double[] m, int d, int w) Method printVect for printing a vector Based on ER Harold, "Java I/O", O'Reilly, around p.
static void	printVect(int[] m, int d, int w) Method printVect for printing a vector Based on ER Harold, "Java I/O", O'Reilly, around p.
static double[][]	Standardize(int nrow, int ncol, double[][] A) Method for standardizing the input data

Methods inherited from class java.lang.Object

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

Constructor Detail

VEC

public VEC()

Method Detail

getSpaces

public static String getSpaces(int n)

printMatrix

public static void printMatrix(int n1,
                               int n2,
                               double[][] m,
                               int d,
                               int w)

Method for printing a matrix
Based on ER Harold, "Java I/O", O'Reilly, around p. 473.

Parameters:

n1 - row dimension of matrix

n2 - column dimension of matrix

m - input matrix values

d - display precision, number of decimal places

w - display precision, total width of floating value

getMatrix

public static String getMatrix(int n1,
                               int n2,
                               double[][] m,
                               int d,
                               int w)

Method for filling string with a matrix
Based on ER Harold, "Java I/O", O'Reilly, around p. 473.

Parameters:

n1 - row dimension of matrix

n2 - column dimension of matrix

m - input matrix values

d - display precision, number of decimal places

w - display precision, total width of floating value

printMatrix

public static void printMatrix(int n1,
                               int n2,
                               int[][] m,
                               int d,
                               int w)

Method for printing an integer matrix
Based on ER Harold, "Java I/O", O'Reilly, around p. 473.

Parameters:

n1 - row dimension of matrix

n2 - column dimension of matrix

m - input matrix values

d - display precision, number of decimal places

w - display precision, total width of floating value

printVect

public static void printVect(double[] m,
                             int d,
                             int w)

Method printVect for printing a vector
Based on ER Harold, "Java I/O", O'Reilly, around p. 473.

Parameters:

m - input vector of length m.length

d - display precision, number of decimal places

w - display precision, total width of floating value

printVect

public static void printVect(int[] m,
                             int d,
                             int w)

Method printVect for printing a vector
Based on ER Harold, "Java I/O", O'Reilly, around p. 473.

Parameters:

m - input vector of length m.length

d - display precision, number of decimal places

w - display precision, total width of floating value

Standardize

public static double[][] Standardize(int nrow,
                                     int ncol,
                                     double[][] A)

Method for standardizing the input data

Note the formalas used (since these vary between implementations):
reduction: (vect - meanvect)/sqrt(nrow)*colstdev
colstdev: sum_cols ((vect - meanvect)^2/nrow)
if colstdev is close to 0, then set it to 1.

Parameters:

nrow - number of rows in input matrix

ncol - number of columns in input matrix

A - input matrix values

GetSummaryData

public static double[][] GetSummaryData(int nrow,
                                        int ncol,
                                        double[][] A)

inSort

public static void inSort(double[] invect)

Method to sort a double vector, by inefficient straight insertion See section 8.1, p. 243, of Numerical Recipes in C. Two corrections, FM, 2003/11/14

Parameters:

invect - input data to be sorted, sorted in place