From Simon.Blomberg at anu.edu.au  Wed Jul 13 01:52:17 2005
From: Simon.Blomberg at anu.edu.au (Simon Blomberg)
Date: Wed, 13 Jul 2005 09:52:17 +1000
Subject: [Rd] Computer algebra in R - would that be an idea??
In-Reply-To: <42D3E0E6.4090702@stats.uwo.ca>
References: <C83C5E3DEEE97E498B74729A33F6EAEC0308400F@DJFPOST01.djf.agrsci.dk>
	<971536df0507120757503c9a71@mail.gmail.com>
	<42D3E0E6.4090702@stats.uwo.ca>
Message-ID: <6.2.1.2.0.20050713092434.01bd38e0@anumail.anu.edu.au>

I would use such a symbolic math package for R. I have dreamt of an 
open-source solution with functionality similar to mathStatica. 
http://www.mathstatica.com/ Is yacas the best system to consider? What 
about  Maxima http://maxima.sourceforge.net/, which is also GPL, or maybe 
Axiom http://savannah.nongnu.org/projects/axiom, which has a modified BSD 
license?

Cheers,

Simon.

At 01:25 AM 13/07/2005, Duncan Murdoch wrote:
>On 7/12/2005 10:57 AM, Gabor Grothendieck wrote:
> > On 7/12/05, S?ren H?jsgaard <Soren.Hojsgaard at agrsci.dk> wrote:
> >> >From time to time people request symbolic computations beyond what 
> D() and deriv() etc can provide. A brief look at the internet shows that 
> there are many more or less developed computer algebra packages freely 
> available. Therefore, I wondered if it would be an idea to try to 
> 'integrate' one of these packages in R, which I guess can be done in more 
> or less elegant ways... I do not know any of the computer algebra people 
> around the World, but perhaps some other people from the R-community do 
> and would be able to/interested in establishing such a connection...
> >
> >
> > Coincidentally I asked the yacas developer about this just yesterday:
> > 
> http://sourceforge.net/mailarchive/forum.php?thread_id=7711431&forum_id=2216
>
>It sounds like developing an R package to act as a wrapper would be the
>best approach.  I didn't see documentation for their API (the exports of
>their DLL), but I didn't spend long looking.
>
>Duncan Murdoch
>
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Simon Blomberg, B.Sc.(Hons.), Ph.D, M.App.Stat.
Centre for Resource and Environmental Studies
The Australian National University
Canberra ACT 0200
Australia
T: +61 2 6125 7800 email: Simon.Blomberg_at_anu.edu.au
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[Rd] Computer algebra in R - would that be an idea??
Simon Blomberg