HI I am unable to find R extension for 18.1. Preriit2131 commented on Jul 18, 2017. I am having issues getting the R nodes to display after installing 'Essentials for R' (v. 3.3.3) on the SPSS Modeler v18.1 installation on my Mac OSX Sierra. Extension nodes (SPSS Modeler 18.1), but it runs on error ('Failed to run R'). Prior to SPSS 16.0, different versions of SPSS were available for Windows, Mac OS X and Unix. SPSS Statistics version 13.0 for Mac OS X was not compatible with Intel-based Macintosh computers, due to the Rosetta emulation software causing errors in calculations.
R Essentials for PASW Statistics 18 also known as IBM SPSS Statistics This folder contains the R Essentials materials for working with R in Statistics 18. Download the version appropriate for your platform. Be sure to read the installation instructions. You must obtain and install the appropriate version of R itself from the R website before installing the Essentials.
The Essentials installer installs the plugin that enables the use of R in Statistics. To obtain example extension commands that use this facility, download them from the Statistics collection in the SPSS Community at www.ibm.com/developerworks/spssdevcentral You can direct questions to the SPSS Community forums accessed from www.ibm.com/developerworks/spssdevcentral The source code for the plugin portion of the Essentials can also be obtained from this folder. It is not needed in order to use the Essentials. The examples are distributed in source form.
Source: README18.txt, updated 2011-04-05.