saaps.util
Class Average

java.lang.Object
  |
  +--saaps.util.Average

public abstract class Average

extends java.lang.Object

Constructor Summary

Average()

Method Summary

static TimeSeries

getFromDB(java.lang.String dboStr, java.util.Date sd, java.util.Date ed, long si, long w1, long w2, boolean ignoreNaN) Get a TimeSeries object from the database over the given interval and the given sampling rate and time resolution.

Methods inherited from class java.lang.Object

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

Constructor Detail

Average

public Average()

Method Detail

getFromDB

public static TimeSeries getFromDB(java.lang.String dboStr,
                                   java.util.Date sd,
                                   java.util.Date ed,
                                   long si,
                                   long w1,
                                   long w2,
                                   boolean ignoreNaN)

Get a TimeSeries object from the database over the given interval and the given sampling rate and time resolution.

The time resolution is defined by the window [w1,w2] over which the averaging is made.

Example: Get ACE one minute data with 1 hour central averages.
TimeSeries ts = Average.getFromDB("ACEmagDB",sd,ed,si,w1,w2)
where sd and ed are the start and end dates (Date objects) and

• si = 1000 * 60 * 60, one hour in milliseconds,
• w1 = -1000 * 60 * 30, 1/2 hour back in time,
• w2 = +1000 * 60 * 30, 1/2 hour forward in time.

Parameters:

dboStr - The name of the database object

sd - The start date

ed - The end date

si - Sample interval in milliseconds

w1 - Start of average window in milliseconds

w2 - End of average window in milliseconds

ignoreNaN - If true then ignore NaN before averaging