REngine’不包含’SetDllDirectory’，’RDotNet的定义

我的代码

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using RDotNet; using RDotNet.Devices; using RDotNet.Internals; using Microsoft.Win32; namespace Con_R { class Program { static void Main(string[] args) { string rhome = System.Environment.GetEnvironmentVariable("R_HOME"); if (string.IsNullOrEmpty(rhome)) rhome = @"C:\Program Files\R\R-3.3.1"; System.Environment.SetEnvironmentVariable("R_HOME", rhome); System.Environment.SetEnvironmentVariable("PATH", System.Environment.GetEnvironmentVariable("PATH") + ";" + rhome + @"binx64"); // Set the folder in which R.dll locates. //REngine.SetDllDirectory(@"C:Program FilesRR-2.12.0bini386″); REngine.SetDllDirectory(@"C:\Program Files\R\R-3.3.1\bin\x64"); // REngine e = REngine.CreateInstance("test", new[] { "" }); using (REngine engine = REngine.CreateInstance("RDotNet", new[] { "-q" })) // quiet mode { foreach (string path in engine.EagerEvaluate(".libPaths()").AsCharacter()) { Console.WriteLine(path); } engine.Evaluate(".libPaths(C:\\Program Files\\R\\R-3.3.1\\library)"); engine.Evaluate("source(D:\\R\\Script\\load_forecast_grid.r)"); Console.ReadLine(); } } } } 

抓取以下错误

Error 1 'RDotNet.REngine' does not contain a definition for 'SetDllDirectory' C:\Users\Shrinith_Sanil\Documents\Visual Studio 2013\Projects\Con_R\Con_R\Program.cs 161 21 Con_R

Error 2 'RDotNet.REngine' does not contain a definition for 'CreateInstance' C:\Users\Shrinith_Sanil\Documents\Visual Studio 2013\Projects\Con_R\Con_R\Program.cs 164 45 Con_R

添加了

Error 3 'RDotNet.REngine' does not contain a definition for 'EagerEvaluate' and no extension method 'EagerEvaluate' accepting a first argument of type 'RDotNet.REngine' could be found (are you missing a using directive or an assembly reference?) C:\Users\Shrinith_Sanil\Documents\Visual Studio 2013\Projects\Con_R\Con_R\Program.cs 167 48 Con_R

Answer 1

通过使用R.Net Collaboration of .NET Framework和R统计计算，我的问题得到了解决，下面是代码中的少数修改

 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using RDotNet; using Microsoft.Win32; using System.IO; namespace Con_R2 { class Program { static string rPath = ""; static void Main(string[] args) { SetupPath(); // current process, soon to be deprecated using (REngine engine = REngine.CreateInstance("RDotNet")) { engine.Initialize(); // required since v1.5 REngine.SetDllDirectory(rPath); foreach (string path in engine.Evaluate(".libPaths()").AsCharacter()) { Console.WriteLine(path); } engine.Evaluate(".libPaths(C:\\Program Files\\R\\R-3.3.1\\library)"); //engine.Evaluate("source('c:/Program Files/R/R-3.3.1/bin/load_forecast_grid.r')"); engine.Evaluate("source('c:/Program Files/R/R-3.3.1/bin/testcmd.r')"); Console.ReadLine(); Console.ReadKey(); } } public static void SetupPath(string Rversion = "R-3.3.1") { var oldPath = System.Environment.GetEnvironmentVariable("PATH"); rPath = System.Environment.Is64BitProcess ? string.Format(@"C:\Program Files\R\{0}\bin\x64", Rversion) : string.Format(@"C:\Program Files\R\{0}\bin\i386", Rversion); if (!Directory.Exists(rPath)) throw new DirectoryNotFoundException( string.Format(" R.dll not found in : {0}", rPath)); var newPath = string.Format("{0}{1}{2}", rPath, System.IO.Path.PathSeparator, oldPath); System.Environment.SetEnvironmentVariable("PATH", newPath); } } } 

Answer 2

只需使用Evaluate而不是EagerEvaluate因为它在当前版本的RDotNet上不可用。

 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using RDotNet; using Microsoft.Win32; namespace Con_R { class Program { static void Main(string[] args) { string rhome = System.Environment.GetEnvironmentVariable("R_HOME"); if (string.IsNullOrEmpty(rhome)) rhome = @"C:\Program Files\R\R-3.3.1"; System.Environment.SetEnvironmentVariable("R_HOME", rhome); System.Environment.SetEnvironmentVariable("PATH", System.Environment.GetEnvironmentVariable("PATH") + ";" + rhome + @"binx64"); // Set the folder in which R.dll locates. //REngine.SetDllDirectory(@"C:Program FilesRR-2.12.0bini386″); REngine.SetDllDirectory(@"C:\Program Files\R\R-3.3.1\bin\x64"); // REngine e = REngine.CreateInstance("test", new[] { "" }); using (REngine engine = REngine.CreateInstance("RDotNet", "-q" )) // quiet mode { foreach (string path in engine.Evaluate(".libPaths()").AsCharacter()) { Console.WriteLine(path); } engine.Evaluate(".libPaths(C:\\Program Files\\R\\R-3.3.1\\library)"); engine.Evaluate("source(D:\\R\\Script\\load_forecast_grid.r)"); Console.ReadLine(); } } } }