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interface with R [message #31675]

Sat, 19 March 2011 13:16

typhoong
Messages: 6
Registered: March 2011

Promising Member

hi, i have written a lot of codes using the open source statistical package R.

i want to build a GUI using U++ and do the calculations using the R codes.

so i think i need some kind of "interface" or "library" so that U++ can communicate with R and vice versa.

can you tell me what i need and how i can find it??

i have already looked at the libraries of R provided but i cannot find anything useful.

thanks a lot.

graham

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Re: interface with R [message #31678 is a reply to message #31675]

Sat, 19 March 2011 18:41

koldo
Messages: 3458
Registered: August 2008

Senior Veteran

Hello Graham

The Project R has GPL 2 license.

What features are you using from it?

Best regards
Iñaki

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Re: interface with R [message #31710 is a reply to message #31678]

Mon, 21 March 2011 07:37

typhoong
Messages: 6
Registered: March 2011

Promising Member

hello koldo

thanks for reply but i do not fully understand the gpl license u mentioned. does that mean i cannot use R codes with U++??

i know this software
http://www.sander-partner.ch/en/mintfeatures.html

uses U++ for GUI and R for doing the calculation. And i am starting to think about doing similar things.

u asked the features i use for R, they are basic R codes and ggplot2 library for plotting graphs.

please advise.

graham

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Re: interface with R [message #31711 is a reply to message #31710]

Mon, 21 March 2011 08:27

koldo
Messages: 3458
Registered: August 2008

Senior Veteran

Hello Graham

Quote:

i do not fully understand the gpl license

In summary it means that if you include R in a commercial program all your source code has to be public Rolling Eyes

Quote:

i know this software
http://www.sander-partner.ch/en/mintfeatures.html

Oh, U++ application for Windmill is going to be widespread Smile

.

What are R codes?

Best regards
Iñaki

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Re: interface with R [message #31720 is a reply to message #31711]

Mon, 21 March 2011 12:59

typhoong
Messages: 6
Registered: March 2011

Promising Member

hi, I don't exactly what the R codes are but the company told me they use R to do the calculation and produce these plots:

http://www.sander-partner.ch/images/mint/BootStrap.png

http://www.sander-partner.ch/images/mint/HourlyCycle.png

http://www.sander-partner.ch/images/mint/Vertical.png

but on their home page, it does not say if you buy the software, they will making their R codes open, does that mean they are violating the license rules? or they have to make open if someone request it?

anyway, i am still trying to find the interface between ultimate++ and R, do you know?

graham

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Re: interface with R [message #31721 is a reply to message #31720]

Mon, 21 March 2011 13:46

dolik.rce
Messages: 1796
Registered: August 2008
Location: Czech Republic

Ultimate Contributor

Hi Graham,

I didn't read the web you linked to carefully, but AFAIK using R in this context can actually mean two things: 1) They are using some R C/C++/... interface or 2) they could be just calling external tools comming from R project. If you don't need some high-speed computing the second option is actually fine enough and it also bypasses the problems accompanied with using GPL licensed software.

If you desire to use C++ interface to R there is a project called Rcpp, which provides just that. It is probably the closest you can get to U++ binding. Unless you decide to write one yourself Smile

(And even if you do that, looking at Rcpp code might be very helpful...)

Best regards,
Honza

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Re: interface with R [message #31722 is a reply to message #31720]

Mon, 21 March 2011 14:04

koldo
Messages: 3458
Registered: August 2008

Senior Veteran

Hello Graham

They are probably doing it right.

Although R package is GPL-2, some header files are distributed under LGPL-2.1. (see http://www.r-project.org/Licenses/ and https://svn.r-project.org/R/trunk/doc/COPYRIGHTS):

- src/include/R.h
- src/include/Rdefines.h
- src/include/Rgraphics.h
- src/include/Rinternals.h
- src/include/Rmath.h
- src/include/S.h
- src/include/R_ext/*.h

LGPL license permits use in proprietary programs calling the code through dynamic libraries (dlls in Windows).

If the functions you need are fully in .h files, probably their integration in U++ will be very easy, just adding the #includes.

Make a simple test and be sure that all .h files are accessible in TheIDE Setup/Build methods/Include directories.

Best regards
Iñaki

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