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R installation

It is required the installation of the following components for the correct operation of the data mining engine:

  • R
  • R Studio
  • rJava

[LINUX] The first two components, needed for the functionality of the Knowage data mining engine, has to be installed through the rpm comand, and, the third, through the RStudio GUI. Once retrieved the RPM file, open the folder and launch the comands:

rpm -Uvh ./R-3.2.2-1.el6.x86_64.rpm               
yum install --nogpgcheck rstudio-server-rhel-0.99.486-x86_64.rpm
cp ./RStudio/rJava_0.9-8.tar.gz $TOMCAT_HOME
chown tomcat $TOMCAT_HOME/rJava_0.98.tar.gz
chown -R tomcat.root /usr/lib64/R/library && chmod -R 775 /usr/lib64/R/library 
chown -R tomcat.root /usr/share/doc/R-3.2.2 && chmod -R 775 /usr/share/doc/R

Typing the address http://server_ipormachine_name:8787/ in the browser, the user gets on screen the page showed below:

Sign in RStudio.

Sign in RStudio.

Then log in with the user credentials used for the Tomcat 7 installation: tomcat / <tomcat_user_password>.

The following images show the sequence of steps the user will encounter:

Meanwhile the package is installed, remember to answer NO when asked to create a personal library in the user home (that can be found under $HOME/RStudio/log). This way, rJava will be installed in the directory /usr/lib64/R/library/rJava.

Finally, edit the TOMCAT_HOME/bin/setenv.sh adding the following commands:

export R_HOME=/usr/lib64/R                          
export LD_LIBRARY_PATH=/usr/lib64/R/library/rJava/jri