MATLAB R-link

Functions for calling the statistical package R from within MATLAB.

Description

A COM based interface that allows you to call R functions from within MATLAB. The functions are:

openR - Connect to an R server process.
evalR - Run an R command.
getRdata - Copies an R variable to MATLAB.
putRdata - Copies MATLAB data to an R variable.
closeR - Close connection to R server process.
Rdemo - An example of using R from withing MATLAB.

• MATLAB release: MATLAB 6.5 (R13)
• Other requirements: Windows Only. You will need a local installation of R and you will also need to install the R-(D)COM interface from http://lib.stat.cmu.edu/R/CRAN/other-software.html or other CRAN mirror site.
• Published M Files: Connecting MATLAB to R

Other Files

Rdemo.m,
Contents.m,
evalR.m,
getRdata.m,
openR.m,
putRdata.m,
Rdemo.png,
Rdemo_01.png,
Rdemo_02.png,
Rdemo_03.png,
Rdemo_04.png,
closeR.m

[avneet singh]

works like a charm

[Beat Huggler]

Easy to install!

[Yuri K]

Works great. Any way to get structures and data frames from R?

[Matlab User]

gave me a lot of power (huge statistical package) that can be easily used in Matlab
code.

[Pierre Lebrun]

easy to install, add extreme power to matlab, especially when using models (regression etc.) mixing both qualitative and quantitative variables.

[David Dabin]

A very good tool for statisticians who want more than just the statistical toolbox of Matlab...

[Kish AS]

 

[qiao nan]

Excellent!

[Xuejian Xiong]

It is a great tool.
However, I got the following error message when using the closeR function:
"Cannot close R session. Error: The remote procedure call failed."
I use Matlab(R2006a), R(2.2.1), and RSrv250. Seems like it is a bug?

[e k]

An excellent set of functions that works beautifully under 2000 & XP.

[Klaus Maresch]

I have the same problem.
"Cannot close R session. Error: The remote procedure call failed."
I use Matlab 6.5.0.180913a (R13), and RSrv250. Seems like it is a bug?

[Lourdes Pelayo]

The interface is very nice. I can call R from MATLAB and get the results very easily.
But how can I run a complete program code in R from Matlab?
I have several loops in my R code. Besides I don't want to type all my R code in every evalR instruction.
Thanks

[John Smith]

 

[zhang hui]

I just find this today !!!!I will use it before make some comment on it

[zhang hui]

 I can read the matrix "vocano" in R command window, but I can't read out "vocano" in using volcano = getRdata('volcano') in matlab; what's wrong with it ?
thanks

[firdaus janoos]

excellent package. makes the hideously designed R usable by general engineers.

[Bryan Grenfell]

Fantastic idea and potentially very useful.. Worked well initially, now having trouble (a) moving regression output (eg residual vector) back to Matlab correctly; (b) a simple correlation of 2 vectors in gives lots of 'ActiveX errors'...

[sb mmth]

is there a way to make it work with MAC OS ?

[shiun shiau]

I have the same problem. I can't read out "vocano" and the error message is "Invoke Error, Dispatch Exception". What's wrong with it? Thanks.

[Boris Danev]

Very helpful API for R. It saved me lots of work. Thank you.

[May Tan]

R_lInK_hANdle.SetSymbol does not work for me.
Could someone help?

[Ankur P]

Great way to make use of some important R commands in MATLAB. Thanks a lot!

[Maya Neytcheva]

A great idea! However did not work for me.
I tried it under unix and linux. The complain is that 'actxserver' is not found.
Am I blind for something obvious?
Is it only for Windows-users?
A comment will be appreciated.

[xiaofeng dai]

This package looks brilliant, but I can not get it work, matlab always complain "Server creation failed. Invalid ProgID 'StatConnectorSrv.StatConnector'" although I have instaledl the R-(D)COM interface. What is the problem?

[Anthony Kendall]

Very handy and lightweight set of functions. Thank you!

To answer some questions:
1) actxserver is a MATLAB function found only in Windows
2) make sure you install the R-(D)COM interface, paying attention to the instructions about setting your R_HOME and PATH variables in the environment variables for your system. I received this same error, but once I restarted my machine and set the paths (and restarted MATLAB) it worked just fine.

[Patrick Tai]

Wonderful tool, I have been using it for almost a year, thank you.
Is there a way to call R (from MATLAB) so that R runs in the background?
R is called via a MATLAB UI command button. The R function may take a long time. When waiting, the MATLAB UI stops refreshing, which leads to ugly displays if the UI windows are moved around. I hope, by calling R in the background, this will be addressed.
Thank you.
Patrick Tai.

[necati]

Hi,
First of all i want to thank to all developer in such a tool. It seems very useful to me.

However, can you please help me about setting the R_HOME and PATH variables? I can not connect Matlab and R still.

Thanks.
Necati Sekkeli

[Patrick Tai]

If your R-link files (openR etc.) are in folder D:\R\Rlink, then add the following path to MATLAB:

D:\R\Rlink

How do you add a MATLAB path? To find out, enter command in MATLAB
>> doc path

[seonjoo irncjbra]

It works at XP but when I tried to use at Vista, it did not work. Do I need extra step to make it work? Or openR is not for vista?

[Sophie]

Hi!
I installed R (R2.9.0.exe) on my pc (windows), I installed Scilab DCOM interface. And I downloaded your Matlab R-link and put the folder path where it is stored in the path of Matlab but I still get this error while using openR:
Problem connecting to R: Error using ==> actxserver at 91
Server creation failed. Invalid ProgID 'StatConnectorSrv.StatConnector'

Any idea what I miss? what I am doing wrong?
Thanks in advance for your help

[Sophie]

I added R_HOME in the environment variables but still I have the following error:
??? Error: Object returned error code: 0x80040013

when the code is calling: R_lInK_hANdle.Init('R');

[Martin Heroux]

Overall, it seems like this will add a great deal of versatility to Matlab. Unfortunately, the documentation is very succinct and I am having difficulty getting even basic statistical tests to give me an output in Matlab.

% Running a simple K-S test to determine whether two samples have the same distribution
a = rand (100,1); % creating a random signal
i = pi/100 :pi/100: pi;
b = (sin (i))' + a; % creating second signal

% Putting both signals into R
putRdata('a',a);
putRdata('b',b);

% Running ks.test in R and retrieving the output
evalR ('output <- ks.test(x, y)')
getRdata ('output')

%%%%%

I can run this code in R and get the output from the statistical test. However, when I try to get the R data (getRdata), Matlab give me the following error message:

Error using ==> getRdata at 47 Could not get output.
Invoke Error, Dispatch Exception: There is no connection for this connection ID

Any suggestions on how to get the output into Matlab.

Cheers

[Mike]

i had a similar problem to sophie. I downloaded the package rscproxy to my R installation and the problem went away.

[Samuel Maistre]

How can i load R packages? I tried evalR('library(...)') but it doesn't seems to work.

[Patrick]

I want to launch R from MATLAB.
I have been using R2.7.0 and DCOM Server 2.5.0 successfully.

I want to upgrade R to 2.8.0 (and later 2.9.2) and I realize that I have to change the DCOM Server. I did the following:
1. Downloaded and installed R 2.8.0 from http://cran.r-project.org/bin/windows/base/old
2. Changed Window system path to point to R-2.8.0/bin
3. Downloaded and installed R_Scilab_DCOM3.0-1B5.exe from http://cran.r-project.org/bin/windows/base (took all options)
4. Installed R package rscproxy_1.3-1.zip from http://cran.r-project.org/web/packages/rscproxy/index.html

I rebooted the computer and run statement openR in MATLAB, a Visual C++ Runtime error box appears, with error message:

Also, I ran the provide (D)COM Server test (Server 1 – Basic Test) from the Windows Start button. In the popped up Window “StatConnector Test”, I click “Start R”, and I got the Visual C++ Run-time error message:
Program: C:\...\Statco~1.exe abnormal program termination.
When error dialog box is OKed, the error “Initializing R .. Function call failed” appeared in the StatConnector Test window.

As a result to this, MATLAB failed to run openR, resulting in a similar Visual C++ Runtime error.

Thanks for help.
Patrick Tai.

[Jeremy]

Rproxy.dll is no longer installed by R-2.9.2. Install the rscproxy package from CRAN. Copy C:\Program Files\R\R-2.9.2\library\rscproxy\libs\rcsproxy.dll to C:\Program Files\R\R-2.9.2\bin\Rproxy.dll, and it seems to work.

[Jianglin MA]

Reply to Martin Heroux:
You can change your code in this way, and it will work.
%%
status = openR;

% Running a simple K-S test to determine whether two samples have the same distribution
a = rand (100,1); % creating a random signal
i = pi/100 :pi/100: pi;
b = (sin (i))' + a; % creating second signal

% Putting both signals into R
putRdata('a',a);
putRdata('b',b);

% Running ks.test in R and retrieving the output
evalR ('output <- ks.test(a, b)')
getRdata ('output')

closeR;

[Massimo]

Hi all,
is there a way to use Rlink on a unix server?
thanks