Cell Splitter

This node uses a user-specified delimiter character to split the content of a selected column into parts. It appends either a fixed number of columns to the input table, each carrying one part of the original column, or a single column containing a collection (list or set) of cells with the split output. It can be specified whether the output consists of one or more columns, only one column containing list cells, or only one column containing set cells in which duplicates are removed.
If the column contains more delimiters than needed (leading to more parts than appended columns are available) the additional delimiters are ignored (resulting in the last column containing the unsplit rest of the column).
If the selected column contains too few delimiters (leading to less parts than expected), empty columns will be created in that row.
Based on the delimiters and the resulting parts the collection cells can have different sizes. The content of the new columns will be trimmed if specified (i.e. leading and trailing spaces will be deleted).

Options

Column selection

Select the column whose values are split.

Delimiter

Specify the delimiter in the value, that splits each part.

Use escape character

If enabled, the backslash ("\") can be used to escape characters, such as "\t" for tabs. You can use the full escape capabilities of Java.

Quotation character

Specify the quotation character, if the different parts in the value are quoted. (The character to escape quotes is always the backslash.) If no quotation character is needed leave it empty.

remove leading and trailing white space chars (trim)

If checked, leading and trailing white spaces of each part (token) will be deleted.

Output - as list

If selected, the output will consist of one column containing list collection cells in which the split parts are stored. Duplicates can occur in list cells.

Output - as set (remove duplicates)

If selected, the output will consist of one column containing set collection cells in which the split parts are stored. Duplicates are removed and can not occur in set cells.

Output - as new columns

If selected, the output will consist of one or more columns, each containing a split part.

Set Array Size

Check this and specify the number of columns to append. All created columns will be of type String. (See above for what happens if the split produces a different number of parts.)

Guess Size and Column Types

If this is checked, the node performs an additional scan through the entire data table and computes the number of columns needed to hold all parts of the split. In addition it determines the column type of the new columns.

Missing Value Handling

If select, the node creates empty string cell instead of missing value cells.

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Workflows

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Links

• Convert string to collectionby Vernalis on 2018-05-31

  forum.knime.com/p/43539
• How can we limit the regex for first found?by knimediger on 2020-11-14

  forum.knime.com/p/108256

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