Project Description: R.NET is an in-process interoperability bridge to R from the .NET Framework. R.NET requires .NET Framework 4 and the native R DLLs installed with the R environment. R.NET works on Windows, Linux and MacOS.

To get started you should now head for the R.NET documentation on GiHub pages. The documentation on this Codeplex site is now legacy.

R.NET is now distributed via R.NET.Community on NuGet


  • Moved the documentation to R.NET documentation on GiHub pages. Over the coming weeks it will have a growing list of howto and troubleshooting pages to facilitate user support, since many issues reported e.g. via stackoverflow are related.
  • Recently released R.NET 1.6.5.
  • Working on a new release of rClr rClr

2014-12-18 Release of the R package rClr 0.7-2 at rClr. This is a significant release due to the fact that all unit tests that can pass using Mono indeed pass.

2014-11-16 R.NET source code reference repository is now hosted on GitHub. This has been requested by several contributors amongst other things to facilitate pull requests.

2014-06-17 Thanks to Evelina Gabasova for documenting Setting up R.NET on Mac

Known Issues

  • There are persisting issues running R.NET from an ASP.NET application. Most issues can be worked around, but need clear documentation.

Whetting the appetite

using System;
using System.Linq;
using RDotNet;

namespace Sample1
   class Program
      static void Main(string[] args)
         // There are several options to initialize the engine, but by default the following suffice:
         REngine engine = REngine.GetInstance();

         // .NET Framework array to R vector.
         NumericVector group1 = engine.CreateNumericVector(new double[] { 30.02, 29.99, 30.11, 29.97, 30.01, 29.99 });
         engine.SetSymbol("group1", group1);
         // Direct parsing from R script.
         NumericVector group2 = engine.Evaluate("group2 <- c(29.89, 29.93, 29.72, 29.98, 30.02, 29.98)").AsNumeric();

         // Test difference of mean and get the P-value.
         GenericVector testResult = engine.Evaluate("t.test(group1, group2)").AsList();
         double p = testResult["p.value"].AsNumeric().First();

         Console.WriteLine("Group1: [{0}]", string.Join(", ", group1));
         Console.WriteLine("Group2: [{0}]", string.Join(", ", group2));
         Console.WriteLine("P-value = {0:0.000}", p);

         // you should always dispose of the REngine properly.
         // After disposing of the engine, you cannot reinitialize nor reuse it


Related Projects

  • R to CLR: an R package to access .NET (CLR) objects from R, complementing R.NET. If you are looking to access .NET code from R interactively, you should consider this package.
  • F# R Provider: an F# library that provides static typed functions exposed by R packages, using the type provider mechanism of F#.

Last edited Aug 9, 2015 at 12:50 AM by jperraud, version 38