GreyMatter

R is powerful language for statistical analysis and Machine Learning. Java is best suited to develop enterprise applications. Integrating both could lead to developing powerful analytic applications. In this tutorial we are going to call a R script from java, then pass the parameters from java to R and fetch back the results from R to Java. Problem Statement: In this tutorial we have a csv file 'data.csv' having 4 columns and we need to calculate mean of few user defined columns. To calculate the mean we will be using and then we will pass the calculated mean back to Java. Pre-requisites:  1. You should know how to integrate R with Java. For that you could consult the tutorial http://rajeev0401.blogspot.in/2013/10/using-r-programming-language-inside-java.html Code Files: We will be needing following files: 1. data.csv: file having data that will be used in R script. 2. config.R: this file contains the configuration (vector having column index) to be used in 'test...

Hi, This tutorial walks you through using R programming language inside a java program. R is a powerful programming language for Machine Learning and Data Mining. It contains implementation of various Machine Learning algorithms. Recently i had a situation where i was supposed to use these machine learning algorithms inside my java program. I searched the web but the stuff i found was not of much help. Thus i thought of putting the same in the form of this tutorial. This tutorial is not intended to teach you R language. It is only to help you integrate R to Java and then to use R functions inside a Java program. Pre-requisite: Following things are needed to be pre-configured on your system to use R in Java program: 1. R workbench:  R has got a console known as RGui where R commands/programs could be executed. To install RGui simply go to  http://cran.r-project.org/bin/windows/base/  and download the ' Download R 3.0.2 for Windows   (52 megabytes, 32/64 bit)...