# Extension Transform node

With the Extension Transform node, you can take data from an IBM® SPSS® Modeler stream and apply transformations to the data using R scripting or Python for Spark scripting. When the data has been modified, it is returned to the stream for further processing, model building and model scoring. The Extension Transform node makes it possible to transform data using algorithms that are written in R or Python for Spark, and enables the user to develop data transformation methods that are tailored to a particular problem.

To use this node with R, you must install IBM SPSS Modeler - Essentials for R. See the *IBM
SPSS Modeler - Essentials for R: Installation Instructions * for installation instructions and
compatibility information. You must also have a compatible version of R installed on your computer.