You can still do this with the generator type "attribute functions". In earlier Rapidminer Studio versions the Create ExampleSet operator was only available through the Operator Toolbox extension.
If I am not wrong Create Example Set operator was available in previous versions also. Generate Data By User Specification allowed us to create attribute using various functions which are available similar to Generate Attribute. The only difference was that Generate Attribute requires input data and Generate Data by User Specification can executed standalone based on macro values
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