/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* 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/.
*/
package com.rapidminer.gui.plotter.charts;
import org.jfree.data.statistics.HistogramDataset;
/**
* This is a helper class for applying a logarithmic transformation on histogram datasets.
*
* @author Ingo Mierswa
*/
public class RapidHistogramDataset extends HistogramDataset {
private static final long serialVersionUID = 1144347275132559243L;
private boolean isLog = false;
public RapidHistogramDataset(boolean isLog) {
this.isLog = isLog;
}
@Override
public Number getY(int series, int item) {
Number superValue = super.getY(series, item);
if (isLog) {
double superDoubleValue = superValue.doubleValue();
if (superDoubleValue > 1.0d) {
return Math.log10(superValue.doubleValue());
} else {
return 0.01;
}
} else {
return superValue;
}
}
}