view flys-artifacts/src/main/java/de/intevation/flys/utils/DateAverager.java @ 4188:dc4087088c0b

Add a new outputmode for an at export in GaugeDischargeCurveArtifact The data provided by the GaugeDischargeCurveArtifact can be used for displaying a curve and also for an at file. Therefore provide another output mode that for a at export.
author Björn Ricks <bjoern.ricks@intevation.de>
date Fri, 19 Oct 2012 13:28:24 +0200
parents d520a0869972
children
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package de.intevation.flys.utils;

import gnu.trove.TLongArrayList;

import java.util.Date;

public class DateAverager
{
   protected TLongArrayList dates;

    public DateAverager() {
        dates = new TLongArrayList();
    }

    public void add(Date date) {
        dates.add(date.getTime());
    }

    public Date getAverage() {
        int N = dates.size();
        if (N == 0) {
            return null;
        }
        long min = dates.min();
        long sum = 0L;
        for (int i = 0; i < N; ++i) {
            sum += dates.getQuick(i) - min;
        }
        return new Date(min + (long)Math.round(sum/(double)N));
    }

    public void clear() {
        dates.resetQuick();
    }
}
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