ingo@617: package de.intevation.gnv.chart;
ingo@617: 
ingo@617: import org.apache.log4j.Logger;
ingo@617: 
ingo@617: import org.jfree.chart.ChartTheme;
sascha@623: 
ingo@617: import org.jfree.chart.plot.XYPlot;
ingo@617: 
ingo@617: import org.jfree.data.statistics.HistogramDataset;
ingo@617: 
ingo@617: /**
ingo@617:  * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
ingo@617:  */
ingo@617: public class DefaultHistogram
ingo@617: extends      AbstractHistogram
ingo@617: {
ingo@617:     // TODO take a better default value
ingo@617:     public static final int DEFAULT_BINS = 15;
ingo@617: 
ingo@617:     private static Logger logger = Logger.getLogger(DefaultHistogram.class);
ingo@617: 
ingo@617: 
ingo@617:     public DefaultHistogram(
ingo@617:         ChartLabels labels, Object[] data, ChartTheme theme
ingo@617:     ) {
ingo@617:         super(labels, data, theme);
ingo@617:     }
ingo@617: 
ingo@617: 
ingo@617:     protected void applyDatasets() {
ingo@617:         XYPlot plot = (XYPlot) chart.getPlot();
ingo@617: 
ingo@617:         // prepare data and create add them to histogram dataset
ingo@617:         String   name   = (String)   data[0];
ingo@617:         double[] values = toDouble((Double[]) data[1]);
ingo@617: 
ingo@617:         HistogramDataset dataset = new HistogramDataset();
ingo@617:         dataset.addSeries(name, values, DEFAULT_BINS);
ingo@617: 
ingo@617:         plot.setDataset(0, dataset);
ingo@617:     }
ingo@617: 
ingo@617: 
ingo@617:     protected double[] toDouble(Double[] array) {
ingo@617:         int length      = array.length;
ingo@617:         double[] values = new double[length];
ingo@617: 
ingo@617:         for(int i = 0; i < length; i++) {
ingo@617:             values[i] = array[i].doubleValue();
ingo@617:         }
ingo@617: 
ingo@617:         return values;
ingo@617:     }
ingo@617: }
ingo@617: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :