Project Description: R.NET enables .NET Framework to collaborate with R statistical computing. R.NET requires .NET Framework 4 and native DLLs installed with R environment. You need no other extra installations. Enjoy statistics and programming in your special language with R.
Some examples are below.
Learn how to use R.NET.
Available in NuGet Gallery
New version 1.5 of binary is
released in NuGet Gallery. Just type "Install-Package R.NET" to install it. Note that the codeplex download is version 1.4 yet.
Current Issues
- Current version of R.NET is not able to draw charts on the default window device on Windows natively (but see How to display an R Graph in a .NET Winform). Graphics engine is under development.
- Multiple initialization fails (in multiple engines running at the same time ): this problem occurs because native R cannot make multiple initialization in single process. Creating a child process and making an REngine instance in the process is an evasive solution.
Examples
- This example illustrates how R.NET works with C#. More examples are available at Examples page.
Program.cs (v1.4) (available in the Downloads section)
using System;
using System.Linq;
using RDotNet;
class Program
{
static void Main(string[] args)
{
// Set the folder in which R.dll locates.
REngine.SetDllDirectory(@"C:\Program Files\R\R-2.12.0\bin\i386");
using (REngine engine = REngine.CreateInstance("RDotNet", new[] { "-q" })) // quiet mode
{
// .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.EagerEvaluate("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.EagerEvaluate("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);
}
}
}
(available in the NuGet Gallery)
using System;
using System.IO;
using System.Linq;
using RDotNet;
class Program
{
static void Main(string[] args)
{
// Set the folder in which R.dll locates.
var envPath = Environment.GetEnvironmentVariable("PATH");
var rBinPath = @"C:\Program Files\R\R-2.15.1\bin\x64";
Environment.SetEnvironmentVariable("PATH", envPath + Path.PathSeparator + rBinPath);
using (REngine engine = REngine.CreateInstance("RDotNet"))
{
// Initializes settings.
engine.Initialize();
// .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);
}
}
}
The major changes in v1.5 are:
- Initialize method must be called before using R. Settings should be passed to the method.
- EagerEvaluate method renamed to Evaluate (use Defer method when you want old version of Evaluate).