use of org.knime.core.data.container.CellFactory in project knime-core by knime.
the class DurationToNumberNodeModel method createColumnRearranger.
/**
* {@inheritDoc}
*/
@Override
protected ColumnRearranger createColumnRearranger(final DataTableSpec spec) throws InvalidSettingsException {
final ColumnRearranger rearranger = new ColumnRearranger(spec);
if (m_colSelectModel.getStringValue() == null) {
throw new InvalidSettingsException("Node must be configured!");
}
if (spec.findColumnIndex(m_colSelectModel.getStringValue()) < 0) {
throw new InvalidSettingsException("Column '" + m_colSelectModel.getStringValue() + "' not found in the input table.");
}
final boolean exact = m_typeSelectModel.getStringValue().equals(DataTypeMode.Exact.name());
final DataColumnSpec colSpec = new UniqueNameGenerator(spec).newColumn((m_durationFieldSelectModel.getStringValue()), exact ? DoubleCell.TYPE : LongCell.TYPE);
final CellFactory cellFac = new ExtractDurationSingleFieldCellFactory(spec.findColumnIndex(m_colSelectModel.getStringValue()), exact, colSpec);
rearranger.append(cellFac);
return rearranger;
}
use of org.knime.core.data.container.CellFactory in project knime-core by knime.
the class ReadPNGFromURLNodeModel method createColumnRearranger.
private ColumnRearranger createColumnRearranger(final DataTableSpec in, final AtomicLong failCounter) throws InvalidSettingsException {
String colName = m_config.getUrlColName();
if (colName == null) {
// throws ISE
m_config.guessDefaults(in);
colName = m_config.getUrlColName();
setWarningMessage("Auto-configuration: Guessing column \"" + colName + "\" to contain locations");
}
final int colIndex = in.findColumnIndex(colName);
if (colIndex < 0) {
throw new InvalidSettingsException("No such column in input: " + colName);
}
DataColumnSpec colSpec = in.getColumnSpec(colIndex);
if (!colSpec.getType().isCompatible(StringValue.class)) {
throw new InvalidSettingsException("Selected column \"" + colName + "\" is not string-compatible");
}
final String newColName = m_config.getNewColumnName();
DataColumnSpecCreator colSpecCreator;
if (newColName != null) {
String newName = DataTableSpec.getUniqueColumnName(in, newColName);
colSpecCreator = new DataColumnSpecCreator(newName, PNGImageContent.TYPE);
} else {
colSpecCreator = new DataColumnSpecCreator(colSpec);
colSpecCreator.setType(PNGImageContent.TYPE);
colSpecCreator.removeAllHandlers();
colSpecCreator.setDomain(null);
}
DataColumnSpec outColumnSpec = colSpecCreator.createSpec();
ColumnRearranger rearranger = new ColumnRearranger(in);
CellFactory fac = new SingleCellFactory(outColumnSpec) {
@Override
public DataCell getCell(final DataRow row) {
DataCell cell = row.getCell(colIndex);
if (cell.isMissing()) {
return DataType.getMissingCell();
} else {
String url = ((StringValue) cell).getStringValue();
try {
return toPNGCell(url);
} catch (Exception e) {
if (m_config.isFailOnInvalid()) {
if (e instanceof RuntimeException) {
throw (RuntimeException) e;
} else {
throw new RuntimeException(e.getMessage(), e);
}
} else {
String message = "Failed to read png content from " + "\"" + url + "\": " + e.getMessage();
LOGGER.warn(message, e);
failCounter.incrementAndGet();
return DataType.getMissingCell();
}
}
}
}
};
if (newColName == null) {
rearranger.replace(fac, colIndex);
} else {
rearranger.append(fac);
}
return rearranger;
}
use of org.knime.core.data.container.CellFactory in project knime-core by knime.
the class PolyRegLearnerNodeModel method getCellFactory.
private CellFactory getCellFactory(final int dependentIndex) {
final int degree = m_settings.getDegree();
return new CellFactory() {
@Override
public DataCell[] getCells(final DataRow row) {
double sum = m_betas[0];
int betaCount = 1;
double y = 0;
for (int col = 0; col < row.getNumCells(); col++) {
if ((col != dependentIndex) && m_colSelected[col]) {
final double value = ((DoubleValue) row.getCell(col)).getDoubleValue();
double poly = 1;
for (int d = 1; d <= degree; d++) {
poly *= value;
sum += m_betas[betaCount++] * poly;
}
} else if (col == dependentIndex) {
y = ((DoubleValue) row.getCell(col)).getDoubleValue();
}
}
double err = Math.abs(sum - y);
m_squaredError += err * err;
return new DataCell[] { new DoubleCell(sum), new DoubleCell(err) };
}
@Override
public DataColumnSpec[] getColumnSpecs() {
DataColumnSpecCreator crea = new DataColumnSpecCreator("PolyReg prediction", DoubleCell.TYPE);
DataColumnSpec col1 = crea.createSpec();
crea = new DataColumnSpecCreator("Prediction Error", DoubleCell.TYPE);
DataColumnSpec col2 = crea.createSpec();
return new DataColumnSpec[] { col1, col2 };
}
@Override
public void setProgress(final int curRowNr, final int rowCount, final RowKey lastKey, final ExecutionMonitor execMon) {
// do nothing
}
};
}
use of org.knime.core.data.container.CellFactory in project knime-core by knime.
the class PCAReverseNodeModel method execute.
/**
* Performs the PCA.
*
* {@inheritDoc}
*/
@Override
protected PortObject[] execute(final PortObject[] inData, final ExecutionContext exec) throws Exception {
final PCAModelPortObject model = (PCAModelPortObject) inData[MODEL_INPORT];
final Matrix eigenvectors = EigenValue.getSortedEigenVectors(model.getEigenVectors(), model.getEigenvalues(), m_inputColumnIndices.length);
if (m_failOnMissingValues.getBooleanValue()) {
for (final DataRow row : (DataTable) inData[DATA_INPORT]) {
for (int i = 0; i < m_inputColumnIndices.length; i++) {
if (row.getCell(m_inputColumnIndices[i]).isMissing()) {
throw new IllegalArgumentException("data table contains missing values");
}
}
}
}
final String[] origColumnNames = ((PCAModelPortObjectSpec) ((PCAModelPortObject) inData[MODEL_INPORT]).getSpec()).getColumnNames();
final DataColumnSpec[] specs = createAddTableSpec((DataTableSpec) inData[DATA_INPORT].getSpec(), origColumnNames);
final CellFactory fac = new CellFactory() {
@Override
public DataCell[] getCells(final DataRow row) {
return convertInputRow(eigenvectors, row, model.getCenter(), m_inputColumnIndices, origColumnNames.length);
}
@Override
public DataColumnSpec[] getColumnSpecs() {
return specs;
}
@Override
public void setProgress(final int curRowNr, final int rowCount, final RowKey lastKey, final ExecutionMonitor texec) {
texec.setProgress((double) curRowNr / rowCount);
}
};
final ColumnRearranger cr = new ColumnRearranger((DataTableSpec) inData[DATA_INPORT].getSpec());
cr.append(fac);
if (m_removePCACols.getBooleanValue()) {
cr.remove(m_inputColumnIndices);
}
final BufferedDataTable result = exec.createColumnRearrangeTable((BufferedDataTable) inData[DATA_INPORT], cr, exec);
final PortObject[] out = { result };
return out;
}
use of org.knime.core.data.container.CellFactory in project knime-core by knime.
the class PolyRegLearnerNodeModel method getCellFactory.
private CellFactory getCellFactory(final int dependentIndex) {
final int degree = m_settings.getDegree();
return new CellFactory() {
@Override
public DataCell[] getCells(final DataRow row) {
double sum = m_betas[0];
int betaCount = 1;
double y = 0;
for (int col = 0; col < row.getNumCells(); col++) {
if ((col == dependentIndex || m_colSelected[col]) && row.getCell(col).isMissing()) {
switch(m_settings.getMissingValueHandling()) {
case ignore:
return new DataCell[] { DataType.getMissingCell(), DataType.getMissingCell() };
case fail:
throw new IllegalStateException("Should failed earlier!");
default:
throw new UnsupportedOperationException("Not supported missing handling strategy: " + m_settings.getMissingValueHandling());
}
}
if ((col != dependentIndex) && m_colSelected[col]) {
final double value = ((DoubleValue) row.getCell(col)).getDoubleValue();
double poly = 1;
for (int d = 1; d <= degree; d++) {
poly *= value;
sum += m_betas[betaCount++] * poly;
}
} else if (col == dependentIndex) {
y = ((DoubleValue) row.getCell(col)).getDoubleValue();
}
}
double err = Math.abs(sum - y);
m_squaredError += err * err;
return new DataCell[] { new DoubleCell(sum), new DoubleCell(err) };
}
@Override
public DataColumnSpec[] getColumnSpecs() {
DataColumnSpecCreator crea = new DataColumnSpecCreator("PolyReg prediction", DoubleCell.TYPE);
DataColumnSpec col1 = crea.createSpec();
crea = new DataColumnSpecCreator("Prediction Error", DoubleCell.TYPE);
DataColumnSpec col2 = crea.createSpec();
return new DataColumnSpec[] { col1, col2 };
}
@Override
public void setProgress(final int curRowNr, final int rowCount, final RowKey lastKey, final ExecutionMonitor execMon) {
// do nothing
}
};
}
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