Example usage for org.jfree.data.statistics DefaultBoxAndWhiskerCategoryDataset clear

Introduction

In this page you can find the example usage for org.jfree.data.statistics DefaultBoxAndWhiskerCategoryDataset clear.

Prototype

public void clear() 

Source Link

Document

Clears all data from the dataset and sends a DatasetChangeEvent to all registered listeners.

Usage

From source file:keel.Algorithms.UnsupervisedLearning.AssociationRules.Visualization.keelassotiationrulesboxplot.ResultsProccessor.java

public void writeToFile(String outName)
        throws FileNotFoundException, UnsupportedEncodingException, IOException {
    //calcMeans();

    // Create JFreeChart Dataset
    DefaultBoxAndWhiskerCategoryDataset dataset = new DefaultBoxAndWhiskerCategoryDataset();

    HashMap<String, ArrayList<Double>> measuresFirst = algorithmMeasures.entrySet().iterator().next()
            .getValue();//from  w  w  w  . j a  v a2s .com
    for (Map.Entry<String, ArrayList<Double>> measure : measuresFirst.entrySet()) {
        String measureName = measure.getKey();
        //Double measureValue = measure.getValue();
        dataset.clear();

        for (Map.Entry<String, HashMap<String, ArrayList<Double>>> entry : algorithmMeasures.entrySet()) {
            String alg = entry.getKey();
            ArrayList<Double> measureValues = entry.getValue().get(measureName);

            // Parse algorithm name to show it correctly
            String aName = alg.substring(0, alg.length() - 1);
            int startAlgName = aName.lastIndexOf("/");
            aName = aName.substring(startAlgName + 1);

            dataset.add(measureValues, aName, measureName);
        }

        // Tutorial: http://www.java2s.com/Code/Java/Chart/JFreeChartBoxAndWhiskerDemo.htm
        final CategoryAxis xAxis = new CategoryAxis("Algorithm");
        final NumberAxis yAxis = new NumberAxis("Value");
        yAxis.setAutoRangeIncludesZero(false);
        final BoxAndWhiskerRenderer renderer = new BoxAndWhiskerRenderer();

        // Black and White
        int numItems = algorithmMeasures.size();
        for (int i = 0; i < numItems; i++) {
            Color color = Color.DARK_GRAY;
            if (i % 2 == 1) {
                color = Color.LIGHT_GRAY;
            }
            renderer.setSeriesPaint(i, color);
            renderer.setSeriesOutlinePaint(i, Color.BLACK);
        }

        renderer.setMeanVisible(false);
        renderer.setFillBox(false);
        renderer.setToolTipGenerator(new BoxAndWhiskerToolTipGenerator());
        final CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);

        Font font = new Font("SansSerif", Font.BOLD, 10);
        //ChartFactory.setChartTheme(StandardChartTheme.createLegacyTheme());
        JFreeChart jchart = new JFreeChart("Assotiation Rules Measures - BoxPlot", font, plot, true);
        //StandardChartTheme.createLegacyTheme().apply(jchart);

        int width = 640 * 2; /* Width of the image */
        int height = 480 * 2; /* Height of the image */

        // JPEG
        File chart = new File(outName + "_" + measureName + "_boxplot.jpg");
        ChartUtilities.saveChartAsJPEG(chart, jchart, width, height);

        // SVG
        SVGGraphics2D g2 = new SVGGraphics2D(width, height);
        Rectangle r = new Rectangle(0, 0, width, height);
        jchart.draw(g2, r);
        File BarChartSVG = new File(outName + "_" + measureName + "_boxplot.svg");
        SVGUtils.writeToSVG(BarChartSVG, g2.getSVGElement());
    }

}

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