util.redshift
Class Redshifts

java.lang.Object
  util.redshift.Redshifts

public class Redshifts
extends Object

Create a redshift sorted list of quasars from Veron (2003) . The program will extract the emission emission line redshift column 71- 75.

By John Talbot, Oct 4, 2003

• INPUT: table1.txt data file from 2003ApJS...87..451H
• OUTPUT:
  1. list of quasars sorted by redshifts
  2. Centered running average histogram with 1, 2, 4, 8, 16, 32, 64 and 128 A bin sizes.
  3. Histogram for one bin size and half-bin size shifted count

  Field Summary

  static int	cutoff
  static double	max
  static double	min
  static DecimalFormat	zFormatter

  Constructor Summary

  Redshifts()
  

  Method Summary

  static String	formatCount(int aCount)
  static String	formatFloatCount(double aCount)
  static List<Quasar>	getRandomQuasars(List<Quasar> quasars, int number) Monte-Carlo generation of a specified number of redshift randomly generated with the same distribution as bin delta z = 0.08 histogram which simulated the smoothed redshift distribution.
  static void	getStatistics(List<Quasar> quasars, String fileName) Get statistics from a list of quasar redshifts
  static void	getVarianceOfRandomQuasars(List<Quasar> quasars, int aNumberOfSimulations)
  static void	main(String[] args)

  Methods inherited from class java.lang.Object

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

  Field Detail

  min

  public static final double min

  See Also:

  Constant Field Values

  max

  public static final double max

  See Also:

  Constant Field Values

  cutoff

  public static final int cutoff

  See Also:

  Constant Field Values

  zFormatter

  public static final DecimalFormat zFormatter

  Constructor Detail

  Redshifts

  public Redshifts()

  Method Detail

  main

  public static void main(String[] args)

  getVarianceOfRandomQuasars

  public static void getVarianceOfRandomQuasars(List<Quasar> quasars,
                                                int aNumberOfSimulations)
                                         throws IOException

  Throws:

  IOException

  getStatistics

  public static void getStatistics(List<Quasar> quasars,
                                   String fileName)
                            throws IOException

  Get statistics from a list of quasar redshifts

  Parameters:

  quasars - quasars instances (each having a redshift property)

  fileName - the filename

  Throws:

  IOException

  formatCount

  public static String formatCount(int aCount)

  formatFloatCount

  public static String formatFloatCount(double aCount)

  getRandomQuasars

  public static List<Quasar> getRandomQuasars(List<Quasar> quasars,
                                              int number)

  Monte-Carlo generation of a specified number of redshift randomly generated with the same distribution as bin delta z = 0.08 histogram which simulated the smoothed redshift distribution.

  Parameters:

  quasars - a List of Quasar instances containing actual redshift value.

  number - the number of random redshifts to generate

  Returns:

  a list of quasar instances with redshifts having the same distribution as the input list