iglu.util
Class NumberUtils

java.lang.Object
  |
  +--iglu.util.NumberUtils

public class NumberUtils

extends java.lang.Object

A collection of useful numerical utilities.

Constructor Summary

NumberUtils()
prevent instantiation

Method Summary

static double[]	convert(java.lang.Double[] values) convert from array of Doubles to array of doubles
static double	distance(int x1, int y1, int x2, int y2) returns the distance between these points.
static int	max(double[] nums) Returns the index of the greatest value
static int	max(int[] nums) Returns the index of the greatest value
static double	mean(double[] values) computes the mean
static double	round(double num, int n) Round doubles to n decimal points
static double	stdDev(double[] values) computes the standard deviation
static double	stdDev(java.lang.Double[] values) computes the standard deviation

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberUtils

public NumberUtils()

prevent instantiation

Method Detail

round

public static double round(double num,
                           int n)

Round doubles to n decimal points

max

public static int max(double[] nums)

Returns the index of the greatest value

max

public static int max(int[] nums)

Returns the index of the greatest value

distance

public static double distance(int x1,
                              int y1,
                              int x2,
                              int y2)

returns the distance between these points.

convert

public static double[] convert(java.lang.Double[] values)

convert from array of Doubles to array of doubles

mean

public static double mean(double[] values)

computes the mean

stdDev

public static double stdDev(java.lang.Double[] values)

computes the standard deviation

stdDev

public static double stdDev(double[] values)

computes the standard deviation