com.clearspring.analytics.util

Class ObyCount

java.lang.Object

com.clearspring.analytics.util.ObyCount

public class ObyCount
extends Object

Simple cardinality estimation command line utility

Usage: > obycount [update-rate]

update-rate: output results after every update-rate elements/lines

Example: > cat elements.txt | obycount

Constructor Summary

Constructors

Constructor and Description
ObyCount()

Method Summary

Modifier and Type	Method and Description
protected static String	formatSummary(long count, long cardinality)
static void	main(String[] args)
static void	usage()

Methods inherited from class java.lang.Object

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

Constructor Detail

ObyCount

public ObyCount()

Method Detail

usage

public static void usage()

main

public static void main(String[] args)
                 throws IOException

Throws:

IOException

formatSummary

protected static String formatSummary(long count,
                                      long cardinality)