/*
* CoalescentTreeIntervalStatistic.java
*
* Copyright (c) 2002-2015 Alexei Drummond, Andrew Rambaut and Marc Suchard
*
* This file is part of BEAST.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership and licensing.
*
* BEAST is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* BEAST is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with BEAST; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* @author Guy Baele
*/
package dr.evomodel.coalescent;
import dr.evolution.coalescent.TreeIntervals;
import dr.evolution.tree.Tree;
import dr.inference.model.Statistic;
/**
* @author Guy Baele
*/
public class CoalescentTreeIntervalStatistic extends Statistic.Abstract {
private Tree tree;
private TreeIntervals intervals;
private int dimension;
private double[] nonZeroIntervals;
private int[] lineageCounts;
public CoalescentTreeIntervalStatistic(Tree tree) {
this.tree = tree;
this.intervals = new TreeIntervals(tree);
//detect here if there are zero-length intervals and set the dimension accordingly
setDimension(intervals);
this.lineageCounts = new int[this.dimension];
this.nonZeroIntervals = new double[this.dimension];
removeZeroLengthIntervals(intervals);
}
public int getDimension() {
return this.dimension;
}
public double getStatisticValue(int i) {
//need more elegant way to trigger recalculation of intervals
if (i == 0) {
intervals.setIntervalsUnknown();
removeZeroLengthIntervals(intervals);
}
//double interval = intervals.getInterval(i);
//return interval;
return this.nonZeroIntervals[i];
}
public double getLineageCount(int i) {
//need more elegant way to trigger recalculation of intervals
if (i == 0) {
intervals.setIntervalsUnknown();
removeZeroLengthIntervals(intervals);
}
return this.lineageCounts[i];
}
public String getStatisticName() {
return "coalescentTreeIntervalStatistic";
}
private void setDimension(TreeIntervals intervals) {
int dim = intervals.getIntervalCount();
for (int i = 0; i < intervals.getIntervalCount(); i++) {
if (intervals.getInterval(i) == 0.0) {
dim--;
}
}
this.dimension = dim;
}
private void removeZeroLengthIntervals(TreeIntervals intervals) {
int dim = 0;
for (int i = 0; i < intervals.getIntervalCount(); i++) {
double intervalLength = intervals.getInterval(i);
if (intervalLength != 0.0) {
this.nonZeroIntervals[dim] = intervalLength;
this.lineageCounts[dim] = intervals.getLineageCount(i);
dim++;
}
}
}
}