Example usage for org.apache.commons.math.stat.descriptive DescriptiveStatistics getN

Introduction

In this page you can find the example usage for org.apache.commons.math.stat.descriptive DescriptiveStatistics getN.

Prototype

public long getN() 

Source Link

Document

Returns the number of available values

Usage

From source file:org.matsim.contrib.socnetgen.sna.graph.analysis.ComponentsTask.java

/**
 * Counts the number of components in <tt>graph</tt>
 * /*from   www . j  a va 2 s.  c om*/
 * @param graph
 *            a graph.
 * @param stats
 *            a map where the results of the analysis are stored.
 */
@Override
public void analyze(Graph graph, Map<String, DescriptiveStatistics> statsMap) {
    DescriptiveStatistics distr = module.distribution(graph);
    double numComponents = distr.getN();
    singleValueStats(NUM_COMPONENTS, numComponents, statsMap);

    logger.info(String.format("%1$s disconnected components.", numComponents));

    if (outputDirectoryNotNull()) {
        TDoubleDoubleHashMap hist = Histogram.createHistogram(distr, new LinearDiscretizer(1.0), false);
        try {
            StatsWriter.writeHistogram(hist, "size", "n",
                    String.format("%1$s/components.txt", getOutputDirectory()));
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

---

From source file:org.matsim.contrib.socnetgen.sna.graph.spatial.analysis.EdgeLengthMedian.java

private double edgeLengthMedian(SpatialVertex vertex) {
    if (calculator == null) {
        calculator = DistanceCalculatorFactory
                .createDistanceCalculator(CRSUtils.getCRS(vertex.getPoint().getSRID()));
    }/*from  w ww  .  jav a 2  s .  c o m*/

    DescriptiveStatistics stats = new DescriptiveStatistics();

    for (SpatialVertex neighbor : vertex.getNeighbours()) {
        if (neighbor.getPoint() != null) {
            if (vertex.getPoint().getSRID() == neighbor.getPoint().getSRID()) {
                stats.addValue(calculator.distance(vertex.getPoint(), neighbor.getPoint()));
            } else {
                throw new RuntimeException("Points do not share the same coordinate reference system.");
            }
        }
    }

    if (stats.getN() > 1)
        return stats.getPercentile(50);
    else
        return Double.NaN;
}

---

From source file:org.openehealth.ipf.commons.test.performance.processingtime.ProcessingTimeDescriptiveStatistics.java

/**
 * Returns statistical summary of all the data.
 * /*  w ww  .ja  va  2 s . c  om*/
 * @return a <code>StatisticalSummary</code> object
 */
@Override
public StatisticalSummary getStatisticalSummaryByName(String name) {
    DescriptiveStatistics stats = statisticsByMeasurementName.get(name);

    return new StatisticalSummaryValues(stats.getMean(), stats.getVariance(), stats.getN(), stats.getMax(),
            stats.getMin(), stats.getSum());
}

---

From source file:org.processmining.analysis.performance.dottedchart.ui.MetricsPanel.java

/**
 * Displays the performance metrics of each pattern on the east side of the
 * plug-in window.// ww  w  . j ava  2s  .  c  o m
 * 
 * @param sortedArray
 *            int[]
 */

public void displayPerformanceMetrics() {
    String type = dcPanel.getTimeOption();
    ArrayList<DescriptiveStatistics> aList = dcModel.getTimeStatistics();
    ArrayList<String> aTitles = dcModel.getDescriptiveStatisticsTitles();

    ArrayList<String> sortedTitleList = dcModel.getSortedKeySetList();

    this.removeAll();
    this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
    // add time option menu
    this.add(Box.createRigidArea(new Dimension(5, 10)));
    JPanel menuPanel = new JPanel(new BorderLayout());
    menuPanel.setPreferredSize(new Dimension(160, 45));
    menuPanel.setMaximumSize(new Dimension(180, 45));
    timeSortLabel.setAlignmentX(LEFT_ALIGNMENT);
    menuPanel.add(timeSortLabel, BorderLayout.NORTH);
    timeBox.setMaximumSize(new Dimension(160, 20));
    timeBox.setAlignmentX(LEFT_ALIGNMENT);
    menuPanel.add(Box.createRigidArea(new Dimension(5, 0)));
    menuPanel.add(timeBox, BorderLayout.CENTER);
    this.add(menuPanel);
    this.add(Box.createRigidArea(new Dimension(5, 10)));

    // for each frequency get the set of patterns that have that frequency
    // (run from high frequency to low)
    int size = 0;
    for (int i = 0; i < aList.size(); i++) {
        try {
            String key;
            DescriptiveStatistics currentDS = null;
            if (i != 0)
                key = sortedTitleList.get(i - 1);
            else {
                key = aTitles.get(0);
                currentDS = aList.get(i);
            }

            if (i > 0 && dcModel.getTypeHashMap().equals(DottedChartPanel.ST_INST)
                    && !dcModel.getInstanceTypeToKeep().contains(key))
                continue;
            size++;

            if (i > 0) {
                for (int j = 1; j < aTitles.size(); j++) {
                    if (aTitles.get(j).equals(key))
                        currentDS = aList.get(j);
                }
            }
            AbstractTableModel otm;
            // create labels that contains information about the pattern
            if (i == 0)
                otm = new OverallMetricTableModel();
            else
                otm = new OneMetricTableModel();
            DefaultTableCellRenderer dtcr = new DefaultTableCellRenderer();
            dtcr.setBackground(new Color(235, 235, 235));
            JTable table = new JTable(otm);
            table.setPreferredSize(new Dimension(200, 55));
            table.setMaximumSize(new Dimension(200, 55));
            table.getColumnModel().getColumn(0).setPreferredWidth(70);
            table.getColumnModel().getColumn(0).setMaxWidth(100);
            table.getTableHeader().setFont(new Font("SansSerif", Font.PLAIN, 12));
            table.getColumnModel().getColumn(0).setCellRenderer(dtcr);
            table.setBorder(BorderFactory.createEtchedBorder());

            // place throughput times in table
            if (type.equals(DottedChartPanel.TIME_ACTUAL)) {
                if (i == 0) {
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getLogBoundaryLeft()), 0, 1);
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getLogBoundaryRight()), 1, 1);
                } else {
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getStartDateofLogUniList(key)), 0,
                            1);
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getEndDateofLogUniList(key)), 1,
                            1);
                }
                table.setValueAt(formatString(currentDS.getMean() / timeDivider, 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin() / timeDivider, 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax() / timeDivider, 5), 4, 1);
            } else if (type.equals(DottedChartPanel.TIME_RELATIVE_TIME)) {
                if (i == 0) {
                    table.setValueAt(formatDate(dcModel.getLogBoundaryLeft()), 0, 1);
                    table.setValueAt(formatDate(dcModel.getLogBoundaryRight()), 1, 1);
                } else {
                    table.setValueAt(formatDate(dcModel.getStartDateofLogUniList(key)), 0, 1);
                    table.setValueAt(formatDate(dcModel.getEndDateofLogUniList(key)), 1, 1);
                }
                table.setValueAt(formatString(currentDS.getMean() / timeDivider, 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin() / timeDivider, 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax() / timeDivider, 5), 4, 1);
            } else if (type.equals(DottedChartPanel.TIME_RELATIVE_RATIO)) {
                if (i == 0) {
                    table.setValueAt(formatRatio(dcModel.getLogBoundaryLeft()), 0, 1);
                    table.setValueAt(formatRatio(dcModel.getLogBoundaryRight()), 1, 1);
                } else {
                    table.setValueAt(formatRatio(dcModel.getStartDateofLogUniList(key)), 0, 1);
                    table.setValueAt(formatRatio(dcModel.getEndDateofLogUniList(key)), 1, 1);
                }
                table.setValueAt(formatString(currentDS.getMean() / 100, 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin() / 100, 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax() / 100, 5), 4, 1);
            } else if (type.equals(DottedChartPanel.TIME_LOGICAL)
                    || type.equals(DottedChartPanel.TIME_LOGICAL_RELATIVE)) {
                if (i == 0) {
                    table.setValueAt(formatString(dcModel.getLogBoundaryLeft().getTime(), 5), 0, 1);
                    table.setValueAt(formatString(dcModel.getLogBoundaryRight().getTime(), 5), 1, 1);
                } else {
                    table.setValueAt(formatString((dcModel.getStartDateofLogUniList(key)).getTime(), 5), 0, 1);
                    table.setValueAt(formatString((dcModel.getEndDateofLogUniList(key)).getTime(), 5), 1, 1);
                }
                table.setValueAt(formatString(currentDS.getMean(), 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin(), 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax(), 5), 4, 1);
            }

            JPanel tempPanel = new JPanel(new BorderLayout());
            table.setAlignmentX(CENTER_ALIGNMENT);
            tempPanel.setPreferredSize(new Dimension(160, 98));
            tempPanel.setMaximumSize(new Dimension(180, 98));
            tempPanel.add(table.getTableHeader(), BorderLayout.NORTH);
            tempPanel.add(table, BorderLayout.CENTER);
            JPanel tempPanel2 = new JPanel(new BorderLayout());
            JLabel patternLabel = new JLabel("Component " + key + ":");
            patternLabel.setAlignmentX(LEFT_ALIGNMENT);

            JLabel frequencyLabel = null;
            if (i == 0)
                frequencyLabel = new JLabel("# of components: " + currentDS.getN());
            else
                frequencyLabel = new JLabel("# of dots: " + dcModel.getNumberOfLogUnits(key));

            frequencyLabel.setAlignmentX(LEFT_ALIGNMENT);
            frequencyLabel.setFont(new Font("SansSerif", Font.PLAIN, 12));
            tempPanel2.add(patternLabel, BorderLayout.NORTH);
            tempPanel2.add(frequencyLabel, BorderLayout.CENTER);
            tempPanel2.add(tempPanel, BorderLayout.SOUTH);
            this.add(tempPanel2);
            this.add(Box.createRigidArea(new Dimension(5, 10)));
        } catch (NullPointerException ex) {
            // can occur when patternMap does not contain a pattern with
            // this frequency
            size--;
        }
    }
    // make sure the pattern performance information is displayed properly
    this.setPreferredSize(new Dimension(200, 140 * (size + 1)));
    this.revalidate();
    this.repaint();

}

---

From source file:org.processmining.analysis.performance.fsmanalysis.FSMPerformanceAnalysisUI.java

protected double getData(DescriptiveStatistics ds) {
    String sort = (String) measureSort.getValue();
    if (sort.equals("Minimum")) {
        return ds.getMin();
    } else if (sort.equals("Average")) {
        return (ds.getMean());
    } else if (sort.equals("Median")) {
        return (ds.getPercentile(50));
    } else if (sort.equals("Maximum")) {
        return (ds.getMax());
    } else if (sort.equals("Sum")) {
        return (ds.getSum());
    } else if (sort.equals("StandDev")) {
        return (ds.getStandardDeviation());
    } else if (sort.equals("Variance")) {
        return (ds.getStandardDeviation() * ds.getStandardDeviation());
    } else if (sort.equals("Frequency")) {
        return (ds.getN());
    }/*  www . ja  va 2s  . co  m*/
    return 0.0;
}

---

From source file:org.prom5.analysis.performance.dottedchart.ui.MetricsPanel.java

/**
 * Displays the performance metrics of each pattern on the east side of the
 * plug-in window./*from w  w  w .  j  av a  2  s.c  o  m*/
 * @param sortedArray int[]
 */

public void displayPerformanceMetrics() {
    String type = dcPanel.getTimeOption();
    ArrayList<DescriptiveStatistics> aList = dcModel.getTimeStatistics();
    ArrayList<String> aTitles = dcModel.getDescriptiveStatisticsTitles();

    ArrayList<String> sortedTitleList = dcModel.getSortedKeySetList();

    this.removeAll();
    this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
    //add time option menu
    this.add(Box.createRigidArea(new Dimension(5, 10)));
    JPanel menuPanel = new JPanel(new BorderLayout());
    menuPanel.setPreferredSize(new Dimension(160, 45));
    menuPanel.setMaximumSize(new Dimension(180, 45));
    timeSortLabel.setAlignmentX(LEFT_ALIGNMENT);
    menuPanel.add(timeSortLabel, BorderLayout.NORTH);
    timeBox.setMaximumSize(new Dimension(160, 20));
    timeBox.setAlignmentX(LEFT_ALIGNMENT);
    menuPanel.add(Box.createRigidArea(new Dimension(5, 0)));
    menuPanel.add(timeBox, BorderLayout.CENTER);
    this.add(menuPanel);
    this.add(Box.createRigidArea(new Dimension(5, 10)));

    //for each frequency get the set of patterns that have that frequency
    //(run from high frequency to low)
    int size = 0;
    for (int i = 0; i < aList.size(); i++) {
        try {
            String key;
            DescriptiveStatistics currentDS = null;
            if (i != 0)
                key = sortedTitleList.get(i - 1);
            else {
                key = aTitles.get(0);
                currentDS = aList.get(i);
            }

            if (i > 0 && dcModel.getTypeHashMap().equals(DottedChartPanel.ST_INST)
                    && !dcModel.getInstanceTypeToKeep().contains(key))
                continue;
            size++;

            if (i > 0) {
                for (int j = 1; j < aTitles.size(); j++) {
                    if (aTitles.get(j).equals(key))
                        currentDS = aList.get(j);
                }
            }
            AbstractTableModel otm;
            //create labels that contains information about the pattern
            if (i == 0)
                otm = new OverallMetricTableModel();
            else
                otm = new OneMetricTableModel();
            DefaultTableCellRenderer dtcr = new DefaultTableCellRenderer();
            dtcr.setBackground(new Color(235, 235, 235));
            JTable table = new JTable(otm);
            table.setPreferredSize(new Dimension(200, 55));
            table.setMaximumSize(new Dimension(200, 55));
            table.getColumnModel().getColumn(0).setPreferredWidth(70);
            table.getColumnModel().getColumn(0).setMaxWidth(100);
            table.getTableHeader().setFont(new Font("SansSerif", Font.PLAIN, 12));
            table.getColumnModel().getColumn(0).setCellRenderer(dtcr);
            table.setBorder(BorderFactory.createEtchedBorder());

            //place throughput times in table
            if (type.equals(DottedChartPanel.TIME_ACTUAL)) {
                if (i == 0) {
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getLogBoundaryLeft()), 0, 1);
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getLogBoundaryRight()), 1, 1);
                } else {
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getStartDateofLogUniList(key)), 0,
                            1);
                    table.setValueAt(DateFormat.getInstance().format(dcModel.getEndDateofLogUniList(key)), 1,
                            1);
                }
                table.setValueAt(formatString(currentDS.getMean() / timeDivider, 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin() / timeDivider, 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax() / timeDivider, 5), 4, 1);
            } else if (type.equals(DottedChartPanel.TIME_RELATIVE_TIME)) {
                if (i == 0) {
                    table.setValueAt(formatDate(dcModel.getLogBoundaryLeft()), 0, 1);
                    table.setValueAt(formatDate(dcModel.getLogBoundaryRight()), 1, 1);
                } else {
                    table.setValueAt(formatDate(dcModel.getStartDateofLogUniList(key)), 0, 1);
                    table.setValueAt(formatDate(dcModel.getEndDateofLogUniList(key)), 1, 1);
                }
                table.setValueAt(formatString(currentDS.getMean() / timeDivider, 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin() / timeDivider, 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax() / timeDivider, 5), 4, 1);
            } else if (type.equals(DottedChartPanel.TIME_RELATIVE_RATIO)) {
                if (i == 0) {
                    table.setValueAt(formatRatio(dcModel.getLogBoundaryLeft()), 0, 1);
                    table.setValueAt(formatRatio(dcModel.getLogBoundaryRight()), 1, 1);
                } else {
                    table.setValueAt(formatRatio(dcModel.getStartDateofLogUniList(key)), 0, 1);
                    table.setValueAt(formatRatio(dcModel.getEndDateofLogUniList(key)), 1, 1);
                }
                table.setValueAt(formatString(currentDS.getMean() / 100, 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin() / 100, 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax() / 100, 5), 4, 1);
            } else if (type.equals(DottedChartPanel.TIME_LOGICAL)
                    || type.equals(DottedChartPanel.TIME_LOGICAL_RELATIVE)) {
                if (i == 0) {
                    table.setValueAt(formatString(dcModel.getLogBoundaryLeft().getTime(), 5), 0, 1);
                    table.setValueAt(formatString(dcModel.getLogBoundaryRight().getTime(), 5), 1, 1);
                } else {
                    table.setValueAt(formatString((dcModel.getStartDateofLogUniList(key)).getTime(), 5), 0, 1);
                    table.setValueAt(formatString((dcModel.getEndDateofLogUniList(key)).getTime(), 5), 1, 1);
                }
                table.setValueAt(formatString(currentDS.getMean(), 5), 2, 1);
                table.setValueAt(formatString(currentDS.getMin(), 5), 3, 1);
                table.setValueAt(formatString(currentDS.getMax(), 5), 4, 1);
            }

            JPanel tempPanel = new JPanel(new BorderLayout());
            table.setAlignmentX(CENTER_ALIGNMENT);
            tempPanel.setPreferredSize(new Dimension(160, 98));
            tempPanel.setMaximumSize(new Dimension(180, 98));
            tempPanel.add(table.getTableHeader(), BorderLayout.NORTH);
            tempPanel.add(table, BorderLayout.CENTER);
            JPanel tempPanel2 = new JPanel(new BorderLayout());
            JLabel patternLabel = new JLabel("Component " + key + ":");
            patternLabel.setAlignmentX(LEFT_ALIGNMENT);

            JLabel frequencyLabel = null;
            if (i == 0)
                frequencyLabel = new JLabel("# of components: " + currentDS.getN());
            else
                frequencyLabel = new JLabel("# of dots: " + dcModel.getNumberOfLogUnits(key));

            frequencyLabel.setAlignmentX(LEFT_ALIGNMENT);
            frequencyLabel.setFont(new Font("SansSerif", Font.PLAIN, 12));
            tempPanel2.add(patternLabel, BorderLayout.NORTH);
            tempPanel2.add(frequencyLabel, BorderLayout.CENTER);
            tempPanel2.add(tempPanel, BorderLayout.SOUTH);
            this.add(tempPanel2);
            this.add(Box.createRigidArea(new Dimension(5, 10)));
        } catch (NullPointerException ex) {
            //can occur when patternMap does not contain a pattern with this frequency
            size--;
        }
    }
    //make sure the pattern performance information is displayed properly
    this.setPreferredSize(new Dimension(200, 140 * (size + 1)));
    this.revalidate();
    this.repaint();

}

---

From source file:playground.johannes.gsv.misc.MatrixCompareNorm.java

/**
 * @param args//from   w w w.  ja  v  a  2s .  c o m
 */
public static void main(String[] args) {
    Matrix m1 = new Matrix("1", null);
    VisumMatrixReader reader = new VisumMatrixReader(m1);
    reader.readFile("/home/johannes/gsv/matrices/IV_gesamt.O.fma");
    normMatrix(m1);

    Matrix m2 = new Matrix("2", null);
    reader = new VisumMatrixReader(m2);
    reader.readFile("/home/johannes/gsv/matrices/miv.277.fma");
    normMatrix(m2);

    int notfound = 0;
    DescriptiveStatistics oRelErrs = new DescriptiveStatistics();
    Set<String> origs = m1.getFromLocations().keySet();
    for (String origId : origs) {
        List<Entry> entries1 = m1.getFromLocEntries(origId);
        List<Entry> entries2 = m2.getFromLocEntries(origId);

        double sum1 = 0;
        for (Entry entry : entries1) {
            sum1 += entry.getValue();
        }

        if (entries2 == null) {
            oRelErrs.addValue(-1);
        } else if (entries2 != null && sum1 > 0) {
            double sum2 = 0;
            for (Entry entry : entries2) {
                sum2 += entry.getValue();
            }

            oRelErrs.addValue((sum2 - sum1) / sum1);
        } else {
            notfound++;
        }

    }

    System.err.println(String.format("%s entries out of %s not found or with zero value.", notfound,
            notfound + oRelErrs.getN()));
    System.out.println(String.format("Rel err of origins: mean=%s, med=%s, min=%s, max=%s", oRelErrs.getMean(),
            oRelErrs.getPercentile(0.5), oRelErrs.getMin(), oRelErrs.getMax()));

    DescriptiveStatistics dRelErrs = new DescriptiveStatistics();
    Set<String> dests = m1.getToLocations().keySet();
    for (String destId : dests) {
        List<Entry> entries1 = m1.getToLocEntries(destId);
        List<Entry> entries2 = m2.getToLocEntries(destId);

        double sum1 = 0;
        for (Entry entry : entries1) {
            sum1 += entry.getValue();
        }

        if (entries2 != null && sum1 > 0) {
            double sum2 = 0;
            for (Entry entry : entries2) {
                sum2 += entry.getValue();
            }

            dRelErrs.addValue((sum2 - sum1) / sum1);
        }

    }

    System.out.println(String.format("Rel err of destinations: mean=%s, med=%s, min=%s, max=%s",
            dRelErrs.getMean(), dRelErrs.getPercentile(0.5), dRelErrs.getMin(), dRelErrs.getMax()));

    Map<String, String> ids = new HashMap<>();
    ids.put("6412", "FRA");
    ids.put("11000", "BER");
    ids.put("2000", "HAM");
    ids.put("3241", "HAN");
    ids.put("5315", "KLN");
    ids.put("9162", "MUN");
    ids.put("8111", "STG");

    Map<String, Double> errors = new HashMap<>();
    for (String id1 : ids.keySet()) {
        for (String id2 : ids.keySet()) {
            if (!id1.equalsIgnoreCase(id2)) {

                Entry e1 = m1.getEntry(id1, id2);
                double val1 = e1.getValue();

                Entry e2 = m2.getEntry(id1, id2);
                double val2 = e2.getValue();

                double err = (val2 - val1) / val1;

                System.out.print(ids.get(id1));
                System.out.print(" -> ");
                System.out.print(ids.get(id2));
                System.out.print(": ");
                System.out.println(String.valueOf(err));

            }
        }
    }

}

---

From source file:playground.johannes.gsv.synPop.analysis.ActivityDistanceTruncatedTask.java

@Override
protected DescriptiveStatistics statistics(Collection<ProxyPerson> persons, String purpose, String mode) {
    DescriptiveStatistics stats = super.statistics(persons, purpose, mode);

    if (threshold > 0) {
        DescriptiveStatistics newStats = new DescriptiveStatistics();
        for (int i = 0; i < stats.getN(); i++) {
            double val = stats.getElement(i);
            if (val >= threshold) {
                newStats.addValue(val);
            }//from w w  w  .  j  ava 2  s  .  c o m
        }

        return newStats;
    } else {
        return stats;
    }
}

---

From source file:playground.johannes.sna.graph.analysis.ComponentsTask.java

/**
 * Counts the number of components in <tt>graph</tt>
 * //from  w ww .  ja  v  a  2 s .  co  m
 * @param graph
 *            a graph.
 * @param stats
 *            a map where the results of the analysis are stored.
 */
@Override
public void analyze(Graph graph, Map<String, DescriptiveStatistics> statsMap) {
    DescriptiveStatistics distr = module.distribution(graph);
    double numComponents = distr.getN();
    singleValueStats(NUM_COMPONENTS, numComponents, statsMap);

    logger.info(String.format("%1$s disconnected components.", numComponents));

    if (outputDirectoryNotNull()) {
        TDoubleDoubleHashMap hist = Histogram.createHistogram(distr, new LinearDiscretizer(1.0), false);
        try {
            TXTWriter.writeMap(hist, "size", "n", String.format("%1$s/components.txt", getOutputDirectory()));
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

---

From source file:playground.johannes.sna.util.TXTWriter.java

public static void writeStatistics(TDoubleObjectHashMap<DescriptiveStatistics> statsMap, String xLab,
        String file) throws IOException {
    double[] keys = statsMap.keys();
    Arrays.sort(keys);/*from w w w  .  j  a  v  a2s  .  c  o m*/

    BufferedWriter writer = new BufferedWriter(new FileWriter(file));

    writer.write(xLab);
    writer.write(TAB);
    writer.write("mean");
    writer.write(TAB);
    writer.write("median");
    writer.write(TAB);
    writer.write("min");
    writer.write(TAB);
    writer.write("max");
    writer.write(TAB);
    writer.write("n");
    writer.newLine();

    for (double key : keys) {
        DescriptiveStatistics stats = statsMap.get(key);

        writer.write(String.valueOf(key));
        writer.write(TAB);
        writer.write(String.valueOf(stats.getMean()));
        writer.write(TAB);
        writer.write(String.valueOf(stats.getPercentile(50)));
        writer.write(TAB);
        writer.write(String.valueOf(stats.getMin()));
        writer.write(TAB);
        writer.write(String.valueOf(stats.getMax()));
        writer.write(TAB);
        writer.write(String.valueOf(stats.getN()));
        writer.newLine();
    }

    writer.close();
}

---

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