Many to One
Aggregates several columns into one single column.
In each row, it
finds a matching column from the set of selected columns and places
the name
of that matching column into the aggregated result column.
Which column matches depends on the selected "include method" and
the include pattern.
If no column matches a missing value is added. If multiple columns
match execution fails and no output is generated.
Missing values in the selected columns are ignored.
If all selected columns of one row consist
of missing values a missing value is put in the aggregated column.
All include methods except the regular expression require columns
which are double compatible.
Dialog Options
- Columns
- Select those columns which should be condensed.
- Appended column name
- Name of the aggregate column.
- Include Method
- Choose the method to determine the matching column:
- Binary: Only the column with value "1" matches
- Maximum: The column with the maximum value in each row matches
- Minimum: The column with the minimum value in each row matches
- RegExpPattern: The column matching the provided regular expression
pattern matches.
- Include Pattern
- Enter the regular expression pattern if
RexExpPattern was chosen as include method
- Keep original columns
- If checked, the selected columns
are kept in the output table, otherwise they
are deleted.
Ports
Output Ports
0 |
Data with aggregated column |
This node is contained in KNIME Base Nodes
provided by KNIME GmbH, Konstanz, Germany.