[Rd] request of information about creating DLL from R to be used in other languages/programs

[Duncan Murdoch]

On 18/07/2014, 1:26 PM, Ludovic.Brossard wrote:
> Thanks for this answer.
> If I have well understood, there is no way to create dll and call it
> without having R installed on the computer ?

R is open source so you could probably work out something, but there is
no built-in support for doing that.

Duncan Murdoch

> Sorry if I am wrong i am not a specialist.
> thanks
> 
> Ludovic Brossard
> 
>> On 18/07/2014, 10:29 AM, Ludovic Brossard wrote:
>>
>>> Hello
>>>
>>>
>>>
>>> My question is the following. I have tried to find a similar subject in
>>> archives but not found (perhaps bad search!) and I tried R-help and I was
>>> advised that R-devel would perhaps better for my question
>>>
>>>
>>>
>>> So I wonder if it is possible to create a dll from a R code to use it in
>>> another language/program.
>>>
>>> Indeed, one of my colleague wrote a R code combining some R functions to
>>> create a method of calculation.
>>>
>>> I would want to use this method in a program coded in Delphi.
>>>
>>>
>>>
>>> Is there possibilities to create a DLL from R code to be called in the
>>> Delphi program ?
>>>
>>> It would allow us to avoid rewriting code and searching correspondence
>>> between R functions and Delphi program (or other types of tools as
>>> TPMath).
>>>
>>> Is it possible to call a dll form R whereas R is not installed on the
>>> computer?
>>>
>>>
>>>
>>> I hope to be clear in my demand an I hope you will be able to give me
>>> some
>>> indications or where to find it.
>>>
>> Most of this is possible, but not easy.  See chapter 8 of the "Writing R
>> Extensions" manual.  You are essentially writing a new "front-end" to R,
>> and it will require R to be installed for it to work.
>>
>> Many years ago I wrote instructions for using Delphi to create a DLL for
>> R to use, which is another approach you could try.  I've no idea how
>> obsolete those instructions are nowadays, but they might give you some
>> starting points:
>>
>> http://www.stats.uwo.ca/faculty/murdoch/software/compilingDLLs/pascal.html
>>
>> Duncan Murdoch
>>>
>>> Best regards
>>>
>>>
>>>
>>> Ludovic Brossard
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Ludovic BROSSARD
>>>
>>> UMR PEGASE (Physiologie, Environnement et Génétique pour l’Animal et les
>>> Systèmes d’Elevage)
>>>
>>> INRA – Agrocampus Ouest
>>>
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>>>
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>>>
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>>> <http://www.rennes.inra.fr/pegase>.
>>>
>>>
>>>
>>>
>>>         [[alternative HTML version deleted]]
>>>
>>>
>>>
>>> ______________________________________________
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>>>
>>
>>  
> Ludovic Brossard
> INRA - UMR PEGASE
> Domaine de la Prise
> 35590 SAINT GILLES
> tel : 02 23 48 70 57
> fax : 02 23 48 50 80