New Post: Azure // R.Net

Morning!

As/if needed, I can (per earlier comments) go with IronPython - though I'd love to continue to leverage the graphical capabilities of R in the cloud. That said - I've had run-time errors getting the worker in the air. While I can easily and happily load RDotNet (v 1.5.16) in a C# form application, I tried accessing the same common DLL (where I do the loading process) from a WorkerRoleWithQBQueue solution to no avail. A few points:

• When I tried installed via the NuGet Packages Manager the RDotNet package - all it would offer was v 1.5.5 Curious.
• While the worker role solution compiles, I get a run-time error :
  An unhandled exception of type 'System.TypeLoadException' occurred in Microsoft.WindowsAzure.ServiceRuntime.dll
  Additional information: Could not load type 'Common.RStatistics' from assembly 'Common, Version=1.0.5424.25643, Culture=neutral, PublicKeyToken=null'.
  

For reference, both the form application call the same method:
var statistics = RStatistics.Load();

The common class both applications leverage:
using System;
using System.Diagnostics;
using System.IO;
using RDotNet;

namespace Common
{

public static class RStatistics
{
    private static REngine _rEng;

    public static bool Load()
    {
        var load = true;

        try
        {
            if (null != _rEng)
                return true;
            var curDirectory = Directory.GetCurrentDirectory() + "\\rengine";
            System.Environment.SetEnvironmentVariable("R_HOME", curDirectory);
            var curDirectoryWithBin = curDirectory + "\\bin";
            REngine.SetEnvironmentVariables(curDirectoryWithBin, curDirectory);
            var rPath = curDirectory + "\\bin\\R.dll";

            if (!Directory.Exists(curDirectory))
            {
                //get files from cloud
                Trace.WriteLine("here");
            }



            _rEng = REngine.GetInstance(rPath, true, null, null);
        }
        catch (Exception ex)
        {
            Trace.WriteLine("Are all R DLLs present in the current directory? : " + ex.ToString());
            load = false;
        }

        if (!load)
            _rEng = null;

        return load;
    }

    public static void Unload()
    {
        if(null != _rEng)
            _rEng.Dispose();
    }
}

}