Dear Wayne,
I don't know if you have encountered this problem yet, but when you install
RDCOM on a web server, you can have some security restrictions related to
the webuser account permission to create RDCOM instances.
There is a little explanation of how to handle this, and some C# code of the
principal classes used in the RNetWeb project, from the Leiden University
Medical Center website, at this link:
http://www.msbi.nl/dnn/Default.aspx?tabid=159
I hope that it can help in your works,
Regards,
Julien Vanwinsberghe
-Message d'origine-
De : [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] De la part de
[EMAIL PROTECTED]
Envoyé : jeudi 20 novembre 2008 11:21
À : rcom-l@mailman.csd.univie.ac.at
Objet : RE: [Rcom-l] Building R(D)Com Web Application experiences
Hi Thomas fellow R(D)Com users,
Thanks for the excellent suggestion of using RserverManager. This would seem
to be exactly what I need!
I have managed to get an example in VBA working (See VBA code at bottom of
email).
However, when I try to run a corresponding example using .NET with C# I run
into difficulty.
I can add a IStatConnector-objects to RserverManager with no problems but I
can't seem to retrieve it back again!
In VBA the RServerManager has a method called Item which I can pass in a
string to retrieve my IStatConnector session!
The methods, classes, constructors for the .NET example are quite
different.
Here is the C# code I used to set up an R session and store the
IStatConnector called RLink into the RServermanager.
Does anyone know how to get it back? i.e. can anyone translate the VBCode
Call
RServerManager.ServerPool.Item(MyR).Server.EvaluateNoReturn(plot(x))
to C#?
Regards
Wayne
'-C# .NET example --
using StatConnectorCommonLib;
using STATCONNECTORSRVLib;
using RServerManager;
protected void Button1_Click(object sender, EventArgs e)
{
int n = 150;
StatConnector RLink = new StatConnector();
RLink.Init(R);
RLink.SetSymbol(n, n);
Label1.Text = here i go!;
ServerPool mservermanager = new ServerPool();
mservermanager.Add(RLink, MyR);
}
protected void Button2_Click(object sender, EventArgs e)
{
Need a method to get MyR back!!!
}
'- End C# Code -
'-VBA code example working correctly--
Sub RunRSession()
Call StartRSession
Call GetRSession
End Sub
'--
'
Sub StartRSession()
Dim RLink As StatConnector
Dim mean As Double
Dim n As Long
Dim mservermanager As RServerManager.ServerPool
n = 150
Set RLink = New StatConnector
RLink.Init (R)
RLink.SetSymbol n, n
RLink.EvaluateNoReturn (x - 1: n)
Set mservermanager = New RServerManager.ServerPool
mservermanager.Add RLink, MyR
'Add Rlink StatConnector Session to RServermanager amd call it MyR.
End Sub
'
'
Sub GetRSession()
' Recall StatConnector R session from RServerManager
Call
RServerManager.ServerPool.Item(MyR).Server.EvaluateNoReturn(plot(x))
End Sub
End VBA Code --
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Thomas
Baier
Sent: 19 November 2008 09:55
To: R (D)COM and RExcel server related issues
Subject: Re: [Rcom-l] Building R(D)Com Web Application experiences
Dear Wayne,
[EMAIL PROTECTED] schrieb:
One method of doing this is to define a static StatConnector class in C#
see for example:_ __http://www.daniweb.com/forums/thread49952.html_
but I certainly don't think this would be a recommended approach!
Alternatively I could store the instance of the StatConnectorClass to a
server side Application Object or Session object
see for example:_ http://www.csharphelp.com/archives/archive207.html_
(I have yet to test this approach).
Can anyone perhaps suggest another better approach?
I have not tried to use this in the context of a ASP.NET application,
but I would suggest to have a look at RServerManager.
Using RServerManager, you can store IStatConnector-objects with a
specific name in an object repository (RServerManager) and later
retrieve the same objects by querying the object with its name.
Basic documentation and an adminstrative console is included in the
R/Scilab (D)COM server setup.
Regards,
Thomas
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