Examples with DataCell org.knime.core.data.DataCell used on opensource projects

Example 46 with DataCell

use of org.knime.core.data.DataCell in project knime-core by knime.

the class OneWayANOVAStatistics method getTTestTable.

/**
 * Get the test result of the t-test, for the assumption of equal
 * variance and the assumption of unequal variances.
 * @param exec the execution context
 * @return the t-test results
 */
public BufferedDataTable getTTestTable(final ExecutionContext exec) {
    DataTableSpec outSpec = getTableSpec();
    BufferedDataContainer cont = exec.createDataContainer(outSpec);
    int r = 0;
    for (List<DataCell> cells : getTTestCells()) {
        cont.addRowToTable(new DefaultRow(RowKey.createRowKey(r), cells));
        r++;
    }
    cont.close();
    BufferedDataTable outTable = cont.getTable();
    return outTable;
}

Example 47 with DataCell

use of org.knime.core.data.DataCell in project knime-core by knime.

the class OneWayANOVAStatistics method getGroupsTotalStatistics.

/**
 * Get descriptive statistics for all groups.
 * @return the descriptive statistics for all groups
 */
public List<DataCell> getGroupsTotalStatistics() {
    List<DataCell> cells = new ArrayList<DataCell>();
    cells.add(new StringCell(m_column));
    cells.add(new StringCell("Total"));
    SummaryStatistics stats = m_stats;
    cells.add(new IntCell((int) stats.getN()));
    int missingCount = 0;
    for (MutableInteger m : m_missing) {
        missingCount += m.intValue();
    }
    cells.add(new IntCell(missingCount));
    cells.add(new IntCell(m_missingGroup.intValue()));
    cells.add(new DoubleCell(stats.getMean()));
    cells.add(new DoubleCell(stats.getStandardDeviation()));
    cells.add(new DoubleCell(StatsUtil.getStandardError(stats)));
    cells.add(new DoubleCell(m_confidenceIntervalProp));
    long df = stats.getN() - 1;
    TDistribution distribution = new TDistribution(df);
    double tValue = FastMath.abs(distribution.inverseCumulativeProbability((1 - m_confidenceIntervalProp) / 2));
    double confidenceDelta = tValue * StatsUtil.getStandardError(stats);
    double confidenceLowerBound = stats.getMean() - confidenceDelta;
    double confidenceUpperBound = stats.getMean() + confidenceDelta;
    cells.add(new DoubleCell(confidenceLowerBound));
    cells.add(new DoubleCell(confidenceUpperBound));
    cells.add(new DoubleCell(stats.getMin()));
    cells.add(new DoubleCell(stats.getMax()));
    return cells;
}

Example 48 with DataCell

use of org.knime.core.data.DataCell in project knime-core by knime.

the class OneWayANOVAStatistics method getTotal.

/**
 * Get the row of the ANOVA table with the cells "Total".
 */
private List<DataCell> getTotal(final ANOVA anova) {
    List<DataCell> cells = new ArrayList<DataCell>();
    cells.add(new StringCell(m_column));
    cells.add(new StringCell(SOURCE_TOTAL));
    cells.add(new DoubleCell(anova.getSqurb() + anova.getSquri()));
    cells.add(new IntCell((int) (anova.getDfb() + anova.getDfi())));
    cells.add(DataType.getMissingCell());
    cells.add(DataType.getMissingCell());
    cells.add(DataType.getMissingCell());
    return cells;
}

Example 49 with DataCell

use of org.knime.core.data.DataCell in project knime-core by knime.

the class OneSampleTTestStatistics method getTTestTable.

/**
 * Get the test result of the t-test, for the assumption of equal
 * variance and the assumption of unequal variances.
 * @param exec the execution context
 * @return the t-test results
 */
public BufferedDataTable getTTestTable(final ExecutionContext exec) {
    DataTableSpec outSpec = getTableSpec();
    BufferedDataContainer cont = exec.createDataContainer(outSpec);
    int r = 0;
    for (List<DataCell> cells : getTTestCells()) {
        cont.addRowToTable(new DefaultRow(RowKey.createRowKey(r), cells));
        r++;
    }
    cont.close();
    BufferedDataTable outTable = cont.getTable();
    return outTable;
}

Example 50 with DataCell

use of org.knime.core.data.DataCell in project knime-core by knime.

the class OneSampleTTestStatistics method getDescStatsTable.

/**
 * Get descriptive statistics
 * @param exec
 * @return the descriptive statistics for each column test column
 */
public BufferedDataTable getDescStatsTable(final ExecutionContext exec) {
    DataTableSpec outSpec = getDescStatsSpec();
    BufferedDataContainer cont = exec.createDataContainer(outSpec);
    int r = 0;
    for (List<DataCell> cells : getDescStatsCells()) {
        cont.addRowToTable(new DefaultRow(RowKey.createRowKey(r), cells));
        r++;
    }
    cont.close();
    BufferedDataTable outTable = cont.getTable();
    return outTable;
}