Replace


Synopsis

This operator replaces parts of the values of nominal attributes.


Description

This operator replaces parts of the string values of all nominal attributes it is applied on. The attribute filter type gives the possibility to restrict them. For each value of each attribute it is checked if the regular expression of replace what matches the string. Each matching part of the string will be replaced by the value of the replace_what parameter. The replacement might be empty and can contain capturing groups. Please keep in mind that although regular expressions are much more powerful than simple strings, you might simply enter characters to search for.


Examples

The attribute contains the values "color red", "color green" and "color blue".

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ExampleProcess