Java HistogramDataset类代码示例

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
   * TODO Documentation
   * 
   * @param dataset
   * @return
   */
  private JFreeChart createCellAreaHistogram(HistogramDataset dataset) {   	
String areaUnit = "μm^2"; // Set default value

if (forest != null) {
	areaUnit = forest.getMetaxml().getAllCellsInMetaXML().get(0).getAreaUnit();
}
  	
  	final JFreeChart chart = ChartFactory.createHistogram(
              "Cell Area Distribution",
              String.format("Area [%s]", areaUnit),
              "Occurrence [-]",
              dataset,
              PlotOrientation.VERTICAL,
              true,
              true,
              false);
            
      styleChart(chart);
             
      return chart;
  }
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Création et affichage d'un histogramme avec JFreeChart
 * @param listIn
 */
public static void histogramChart(List<Double> listIn, String listName) {

  double tabIn[] = new double[listIn.size()];
  for (int i = 0; i < listIn.size(); i++) {
    tabIn[i] = listIn.get(i);
  }

  // Création des datasets
  HistogramDataset dataset = new HistogramDataset();
  dataset.setType(HistogramType.RELATIVE_FREQUENCY);
  dataset.addSeries(listName, tabIn, 200);

  // Création de l'histogramme
  JFreeChart chart = ChartFactory.createHistogram("", null, null, dataset,
      PlotOrientation.VERTICAL, true, true, false);
  ChartFrame frame = new ChartFrame("Spatial Data Quality", chart);
  frame.pack();
  frame.setVisible(true);
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Creates dataset for histogram.
 *
 * @param table
 *            table with data
 * @param column
 *            column of which you want the data
 * @param bin
 *            for dividing the output in certain amount of parts
 * @return dataset
 */
public static HistogramDataset createDataset(final Table table,
		final String column, final int bin) {
	HistogramDataset dataSet = new HistogramDataset();
	// Convert table to usable form of data
	double[] data = hist(table, column);

	// Calculate maximum value that appears in data
	// Calculate minimum value that appears in data
	double max = data[0];
	double min = data[0];
	for (int i = 0; i < data.length; i++) {
		if (data[i] > max) {
			max = data[i];
		}
		if (data[i] < min) {
			min = data[i];
		}
	}

	dataSet.addSeries("Hist", data, bin, 0, max);

	return dataSet;
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
private void updateHistograms() {
	dataSet = new HistogramDataset();
	plotRenderer = new ColoredXYBarRenderer();
	plotRenderer.setShadowVisible(false);
	plotRenderer.setBarPainter(new StandardXYBarPainter());
	plot = new XYPlot(dataSet, domainAxis, rangeAxis, plotRenderer);
	for (HistogrammVisualization vis : activeHistograms) {
		vis.addDataSeries(dataSet);
		vis.addMarkers(plot);
	}
	plot.configureDomainAxes();
	plot.configureRangeAxes();
	chart = new JFreeChart(plot);
	chartPanel.setChart(chart);
	chartPanel.restoreAutoBounds();
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
* Creates the {@link JFreeChart} that this chart shows.
* 
* @param dataset
*            The {@link HistogramDataset} that backs the created
*            {@link JFreeChart}.
* @param channel
*            the identifier of the fluorescence channel
* 
* @return A {@link JFreeChart} instance that is shown by this chart.
*/
  private JFreeChart createCellFluorescencesHistogram(HistogramDataset dataset, String channel) {
  	String fluorescenceUnit = "au"; // Set default value

if (forest != null) {
	fluorescenceUnit = forest.getMetaxml().getAllCellsInMetaXML().get(0).getFluorescenceUnit();
}
  	
  	final JFreeChart chart = ChartFactory.createHistogram(
      		channel +"-Fluorescence Distribution",
      		String.format("Fluorescence [%s]", fluorescenceUnit),
              "Occurrence [-]",
              dataset,
              PlotOrientation.VERTICAL,
              true,
              true,
              false);
            
      styleChart(chart);
             
      return chart;
  }
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
   * TODO Documentation
   * 
   * @param dataset
   * @return
   */
  private JFreeChart createCellLengthHistogram(HistogramDataset dataset) {
  	String lengthUnit = "μm"; // Set default value

if (forest != null) {
	lengthUnit = forest.getMetaxml().getAllCellsInMetaXML().get(0).getLengthUnit();
}
  	
  	final JFreeChart chart = ChartFactory.createHistogram(
              "Cell length distribution",
              String.format("Length [%s]", lengthUnit),
              "Occurrence [-]",
              dataset,
              PlotOrientation.VERTICAL,
              true,
              true,
              false);
            
      styleChart(chart);
             
      return chart;
  }
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Confirm that the equals method can distinguish all the required fields.
 */
public void testEquals() {
    double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
    HistogramDataset d1 = new HistogramDataset();
    d1.addSeries("Series 1", values, 5);
    HistogramDataset d2 = new HistogramDataset();
    d2.addSeries("Series 1", values, 5);

    assertTrue(d1.equals(d2));
    assertTrue(d2.equals(d1));

    d1.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
    assertFalse(d1.equals(d2));
    d2.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
    assertTrue(d1.equals(d2));
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Another check for the addSeries() method.
 */
public void testAddSeries2() {
    double[] values = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0};
    HistogramDataset hd = new HistogramDataset();
    hd.addSeries("S1", values, 5);
    assertEquals(0.0, hd.getStartXValue(0, 0), EPSILON);
    assertEquals(1.0, hd.getEndXValue(0, 0), EPSILON);
    assertEquals(1.0, hd.getYValue(0, 0), EPSILON);
    assertEquals(1.0, hd.getStartXValue(0, 1), EPSILON);
    assertEquals(2.0, hd.getEndXValue(0, 1), EPSILON);
    assertEquals(1.0, hd.getYValue(0, 1), EPSILON);
    assertEquals(2.0, hd.getStartXValue(0, 2), EPSILON);
    assertEquals(3.0, hd.getEndXValue(0, 2), EPSILON);
    assertEquals(1.0, hd.getYValue(0, 2), EPSILON);
    assertEquals(3.0, hd.getStartXValue(0, 3), EPSILON);
    assertEquals(4.0, hd.getEndXValue(0, 3), EPSILON);
    assertEquals(1.0, hd.getYValue(0, 3), EPSILON);
    assertEquals(4.0, hd.getStartXValue(0, 4), EPSILON);
    assertEquals(5.0, hd.getEndXValue(0, 4), EPSILON);
    assertEquals(2.0, hd.getYValue(0, 4), EPSILON);
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/** Return the JFreeChart with this histogram, and as a side effect, show it in a JFrame
 * that provides the means to edit the dimensions and also the plot properties via a popup menu. */
public JFreeChart asChart(final boolean show) {
	double[] d = new double[this.size()];
	int i = 0;
	for (Number num : this.values()) d[i++] = num.doubleValue();
	HistogramDataset hd = new HistogramDataset();
	hd.setType(HistogramType.RELATIVE_FREQUENCY);
	String title = "Histogram";
	hd.addSeries(title, d, d.length);
	JFreeChart chart = ChartFactory.createHistogram(title, "", "", hd,
			PlotOrientation.VERTICAL, false, false, false);
	setTheme(chart);
	if (show) {
		JFrame frame = new JFrame(title);
		frame.getContentPane().add(new ChartPanel(chart));
		frame.pack();
		frame.setVisible(true);
	}
	return chart;
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
private HistogramDataset getDataSet() {
  HistogramDataset dataset = new HistogramDataset();
  dataset.setType(HistogramType.FREQUENCY);

  List<Double> values =
      CollectionUtils.mapNullRemoves(
          download.getAllValidConnections(),
          new CollectionUtils.Function<BitTorrentConnection, Double>() {
        public Double evaluate(BitTorrentConnection connection) {
          BitField bitField = connection.getRemoteBitField();
          if (bitField == null || !connection.isOpen()) {
            return null;
          }
          return 100.0 * bitField.getAvailablePieceCount() / bitField.getPieceCount();
        }
      });

  dataset.addSeries("Completion", CollectionUtils.toArray(values), 50, 0.0, 100.0);
  return dataset;
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
private JFreeChart createChart(HistogramDataset dataset) {

    JFreeChart chart = ChartFactory.createHistogram(
        "Remote Peer Completion",
        "Completion %",
        "Peers",
        dataset,
        PlotOrientation.VERTICAL,
        false, false, false);
    chart.setBackgroundPaint(Color.white);

    XYPlot plot = chart.getXYPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
    plot.setRangeCrosshairVisible(true);

    plot.getDomainAxis().setAutoRange(false);
    plot.getDomainAxis().setRange(0.0, 100.0);

    return chart;
  }
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Creates a {@link HistogramDataset} for this {@link Attribute}.
 *
 * @param exampleSet
 * @return
 */
private HistogramDataset createHistogramDataset(final ExampleSet exampleSet) {
	HistogramDataset dataset = new HistogramDataset();

	double[] array = new double[exampleSet.size()];
	int count = 0;

	for (Example example : exampleSet) {
		double value = example.getDataRow().get(getAttribute());
		// don't use missing values because otherwise JFreeChart tries to plot them too which
		// can lead to false histograms
		if (!Double.isNaN(value)) {
			array[count++] = value;
		}
	}

	// add points to data set (if any)
	if (count > 0) {
		// truncate array if necessary
		if (count < array.length) {
			array = Arrays.copyOf(array, count);
		}
		dataset.addSeries(getAttribute().getName(), array, Math.min(array.length, MAX_BINS_HISTOGRAM));
	}

	return dataset;
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Creates a {@link HistogramDataset} for this {@link Attribute}.
 *
 * @param exampleSet
 * @return
 */
private HistogramDataset createHistogramDataset(ExampleSet exampleSet) {
	HistogramDataset dataset = new HistogramDataset();

	double[] array = new double[exampleSet.size()];
	int count = 0;

	for (Example example : exampleSet) {
		double value = example.getDataRow().get(getAttribute());
		// don't use missing values because otherwise JFreeChart tries to plot them too which
		// can lead to false histograms
		if (!Double.isNaN(value)) {
			array[count++] = value;
		}
	}

	// add points to data set (if any)
	if (count > 0) {
		// truncate array if necessary
		if (count < array.length) {
			array = Arrays.copyOf(array, count);
		}
		dataset.addSeries(getAttribute().getName(), array, Math.min(array.length, MAX_BINS_HISTOGRAM));
	}

	return dataset;
}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Confirm that the equals method can distinguish all the required fields.
 */
public void testEquals() {
    
    final double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
    final HistogramDataset d1 = new HistogramDataset();
    d1.addSeries("Series 1", values, 5);
    final HistogramDataset d2 = new HistogramDataset();
    d2.addSeries("Series 1", values, 5);
    
    assertTrue(d1.equals(d2));
    assertTrue(d2.equals(d1));

}
 

import org.jfree.data.statistics.HistogramDataset; //导入依赖的package包/类
/**
 * Some checks that the correct values are assigned to bins.
 */
public void testBins() {
    double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
    HistogramDataset hd = new HistogramDataset();
    hd.addSeries("Series 1", values, 5);
    assertEquals(hd.getYValue(0, 0), 3.0, EPSILON);        
    assertEquals(hd.getYValue(0, 1), 3.0, EPSILON);        
    assertEquals(hd.getYValue(0, 2), 2.0, EPSILON);        
    assertEquals(hd.getYValue(0, 3), 0.0, EPSILON);        
    assertEquals(hd.getYValue(0, 4), 1.0, EPSILON);        
}