See your other post for this task for one column. If you need to apply this transformation to all your columns, use a Loop attributes operator. In attached file, the process.
Again if you need it for export, it is already included as an option in Write CSV. I am not sure why you would need this inside RapidMiner as it already understands the difference between nominal types and other types.
See your other post for this task for one column.
If you need to apply this transformation to all your columns, use a Loop attributes operator.
In attached file, the process.
Regards,
Lionel