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package de.lmu.ifi.dbs.elki.utilities.datastructures.histogram;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Histogram containing an array of doubles (i.e. {@code double[]}). This is
* actually one of the simpler specializations, as arrays are objects not
* primitive in Java.
*
* @author Erich Schubert
*/
public final class DoubleArrayStaticHistogram extends AbstractObjStaticHistogram<double[]> {
/**
* Desired number of columns in each bin.
*/
private final int cols;
/**
* Constructor.
*
* @param bins Number of bins
* @param min Minimum value for the coordinates
* @param max Maximum value for the coordinates
* @param cols Number of columns in each bin.
*/
public DoubleArrayStaticHistogram(int bins, double min, double max, int cols) {
super(bins, min, max);
this.cols = cols;
for (int i = 0; i < bins; i++) {
data[i] = new double[cols];
}
}
/**
* Increment histogram by a double[].
*
* @param coord Coordinate
* @param data Data to increment by.
*/
public void increment(double coord, double[] data) {
double[] existing = get(coord);
for (int i = 0; i < existing.length; i++) {
existing[i] += data[i];
}
}
/**
* {@inheritDoc}
*
* Data is combined by incrementing.
*
* @deprecated use the explicit {@link #increment} instead.
*/
@Deprecated
@Override
public void putData(double coord, double[] data) {
increment(coord, data);
}
@Override
protected double[] makeObject() {
return new double[cols];
}
}
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