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How To Use Building Blocks


In your everyday life as a data scientists and RapidMiner user you will encounter several tasks which you need to do frequently. To make your life easier you can use building blocks for those actions.
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Building blocks allow you to store one preconfigured operator (e.g. a Subprocess operator with some contents) as a kind of template, that you can insert into another process. It is a little bit like copy/paste, just that what you copy can be accessed any time again.
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Creating a Building Block
ย To create a building block you can simply right click on the operator you would like to turn into a building block. If you would like to use more than one operator in the building block you can group them together using a Subprocess operator.
After right clicking you can choose Save as Building Block and give it a name and a description
After clicking on OK you are already done.
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Expert Tip: The building blocks are stored in your .RapidMiner folder as XML and can be shared by sharing the XMLs.
Using a Building Block
ย If you would like to use the building block in the process you can either hit ctrl+b or go to Edit->Insert Building Block. In the resulting window you simply choose your building block and hit OK
Calling a Process like a Function
If you want to "call" a process from another process, use the Execute Process operator. You can even pass data and macros around.
To pass data: on the inner process, connect the process input ports on the *right* of the process to get input, and connect those on the *left* to pass output to the calling process.
In the outer process, connect the data to the ports as you would do with any other operator.
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