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An instance filter that adds a new attribute to the dataset. The new attribute will contain all missing values.


The table below describes the options available for Add.

Option Description
attributeIndex The position (starting from 1) where the attribute will be inserted (first and last are valid indices).
attributeName Set the new attribute's name.
attributeType Defines the type of the attribute to generate.
dateFormat The format of the date values (see ISO-8601).
nominalLabels The list of value labels (nominal attribute creation only). The list must be comma-separated, eg: "red,green,blue". If this is empty, the created attribute will be numeric.


The table below describes the capabilites of Add.

Capability Supported
Class Relational class, String class, Unary class, Binary class, Missing class values, Date class, No class, Empty nominal class, Nominal class, Numeric class
Attributes Unary attributes, Date attributes, Binary attributes, Nominal attributes, Empty nominal attributes, String attributes, Numeric attributes, Relational attributes, Missing values
Min # of instances 0

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