Examples with ColorHandler org.knime.core.data.property.ColorHandler used on opensource projects

Example 6 with ColorHandler

use of org.knime.core.data.property.ColorHandler in project knime-core by knime.

the class ColorManager2NodeModel method configure.

/**
 * @param inSpecs the input specs passed to the output port
 * @return the same as the input spec
 *
 * @throws InvalidSettingsException if a column is not available
 */
@Override
protected PortObjectSpec[] configure(final PortObjectSpec[] inSpecs) throws InvalidSettingsException {
    DataTableSpec spec = (DataTableSpec) inSpecs[INPORT];
    if (spec == null) {
        throw new InvalidSettingsException("No input");
    }
    // check null column
    if (m_column == null) {
        // find first nominal column with possible values
        String column = DataTableSpec.guessNominalClassColumn(spec, false);
        if (column == null) {
            throw new InvalidSettingsException("No column selected and no categorical column available.");
        }
        m_columnGuess = column;
        m_isNominalGuess = true;
        Set<DataCell> set = spec.getColumnSpec(column).getDomain().getValues();
        m_mapGuess.clear();
        m_mapGuess.putAll(ColorManager2DialogNominal.createColorMapping(set));
        ColorHandler colorHandler = createNominalColorHandler(m_mapGuess);
        DataTableSpec dataSpec = getOutSpec(spec, column, colorHandler);
        DataTableSpec modelSpec = new DataTableSpec(dataSpec.getColumnSpec(column));
        super.setWarningMessage("Selected column \"" + column + "\" with default nominal color mapping.");
        return new DataTableSpec[] { dataSpec, modelSpec };
    }
    // check column in spec
    if (!spec.containsName(m_column)) {
        throw new InvalidSettingsException("Column \"" + m_column + "\" not found.");
    }
    // get domain
    DataColumnDomain domain = spec.getColumnSpec(m_column).getDomain();
    // either set colors by ranges or discrete values
    if (m_isNominal) {
        // check if all values set are in the domain of the column spec
        Set<DataCell> list = domain.getValues();
        if (list == null) {
            throw new InvalidSettingsException("Column \"" + m_column + "\"" + " has no nominal values set: " + "execute predecessor or add Binner.");
        }
        // check if the mapping values and the possible values match
        if (!m_map.keySet().containsAll(list)) {
            throw new InvalidSettingsException("Color mapping does not match possible values.");
        }
    } else {
        // check if double column is selected
        if (!spec.getColumnSpec(m_column).getType().isCompatible(DoubleValue.class)) {
            throw new InvalidSettingsException("Column is not valid for" + " range color settings: " + spec.getColumnSpec(m_column).getType());
        }
        // check map
        if (m_map.size() != 2) {
            throw new InvalidSettingsException("Color settings not yet available.");
        }
    }
    // temp color handler
    ColorHandler colorHandler;
    // create new column spec based on color settings
    DataColumnSpec cspec = spec.getColumnSpec(m_column);
    if (m_isNominal) {
        colorHandler = createNominalColorHandler(m_map);
    } else {
        DataColumnDomain dom = cspec.getDomain();
        DataCell lower = null;
        DataCell upper = null;
        if (dom.hasBounds()) {
            lower = dom.getLowerBound();
            upper = dom.getUpperBound();
        }
        colorHandler = createRangeColorHandler(lower, upper, m_map);
    }
    DataTableSpec dataSpec = getOutSpec(spec, m_column, colorHandler);
    DataTableSpec modelSpec = new DataTableSpec(dataSpec.getColumnSpec(m_column));
    return new DataTableSpec[] { dataSpec, modelSpec };
}

Example 7 with ColorHandler

use of org.knime.core.data.property.ColorHandler in project knime-core by knime.

the class ColorManager2NodeModel method execute.

/**
 * Is invoked during the node's execution to make the color settings.
 *
 * @param data the input data array
 * @param exec the execution monitor
 * @return the same input data table whereby the RowKeys contain color info
 *         now
 * @throws CanceledExecutionException if user canceled execution
 */
@Override
protected PortObject[] execute(final PortObject[] data, final ExecutionContext exec) throws CanceledExecutionException {
    assert (data != null && data.length == 1 && data[INPORT] != null);
    BufferedDataTable in = (BufferedDataTable) data[0];
    DataTableSpec inSpec = in.getDataTableSpec();
    ColorHandler colorHandler;
    // if no column has been selected, guess first nominal column
    if (m_column == null) {
        // find first nominal column with possible values
        String column = DataTableSpec.guessNominalClassColumn(inSpec, false);
        m_columnGuess = column;
        m_isNominalGuess = true;
        super.setWarningMessage("Selected column \"" + column + "\" with default nominal color mapping.");
        Set<DataCell> set = inSpec.getColumnSpec(column).getDomain().getValues();
        m_mapGuess.clear();
        m_mapGuess.putAll(ColorManager2DialogNominal.createColorMapping(set));
        colorHandler = createNominalColorHandler(m_mapGuess);
        DataTableSpec newSpec = getOutSpec(inSpec, column, colorHandler);
        BufferedDataTable changedSpecTable = exec.createSpecReplacerTable(in, newSpec);
        DataTableSpec modelSpec = new DataTableSpec(newSpec.getColumnSpec(column));
        ColorHandlerPortObject viewModel = new ColorHandlerPortObject(modelSpec, colorHandler.toString() + " based on column \"" + m_column + "\"");
        return new PortObject[] { changedSpecTable, viewModel };
    }
    // find column index
    int columnIndex = inSpec.findColumnIndex(m_column);
    // create new column spec based on color settings
    DataColumnSpec cspec = inSpec.getColumnSpec(m_column);
    if (m_isNominal) {
        colorHandler = createNominalColorHandler(m_map);
    } else {
        DataColumnDomain dom = cspec.getDomain();
        DataCell lower, upper;
        if (dom.hasBounds()) {
            lower = dom.getLowerBound();
            upper = dom.getUpperBound();
        } else {
            Statistics3Table stat = new Statistics3Table(in, false, 0, Collections.<String>emptyList(), exec);
            lower = stat.getMinCells()[columnIndex];
            upper = stat.getMaxCells()[columnIndex];
        }
        colorHandler = createRangeColorHandler(lower, upper, m_map);
    }
    DataTableSpec newSpec = getOutSpec(inSpec, m_column, colorHandler);
    DataTableSpec modelSpec = new DataTableSpec(newSpec.getColumnSpec(m_column));
    BufferedDataTable changedSpecTable = exec.createSpecReplacerTable(in, newSpec);
    ColorHandlerPortObject viewModel = new ColorHandlerPortObject(modelSpec, "Coloring on \"" + m_column + "\"");
    return new PortObject[] { changedSpecTable, viewModel };
}

Example 8 with ColorHandler

use of org.knime.core.data.property.ColorHandler in project knime-core by knime.

the class ColorAppender2NodeModel method createOutputSpec.

private DataTableSpec createOutputSpec(final DataTableSpec modelSpec, final DataTableSpec dataSpec) throws InvalidSettingsException {
    if (modelSpec == null || dataSpec == null) {
        throw new InvalidSettingsException("Invalid input.");
    }
    if (modelSpec.getNumColumns() < 1) {
        throw new InvalidSettingsException("No color information in input");
    }
    DataColumnSpec col = modelSpec.getColumnSpec(0);
    ColorHandler colorHandler = col.getColorHandler();
    if (col.getColorHandler() == null) {
        throw new InvalidSettingsException("No color information in input");
    }
    String column = m_column.getStringValue();
    if (column == null) {
        // suitable column (while setting a warning message)
        if (dataSpec.containsName(col.getName())) {
            column = col.getName();
        }
    }
    if (column == null) {
        throw new InvalidSettingsException("Not configured.");
    }
    if (!dataSpec.containsName(column)) {
        throw new InvalidSettingsException("Column \"" + column + "\" not available.");
    }
    DataTableSpec spec = ColorManager2NodeModel.getOutSpec(dataSpec, column, colorHandler);
    return spec;
}