I don't know which free system is best. I have mainly used Yacas but my needs to date have been pretty minimal so I suspect any of them would have worked.
Eric's COM solution, once I have it figured out, will likely get me to the next step on Windows. I did some googling around and found this: http://www.koders.com/python/fidDCC1B0FBFABC770277A28835D5FFADC9D25FF54E.aspx which is a python interface to Yacas which may give some ideas on how to interface it to R. On 7/12/05, Søren Højsgaard <[EMAIL PROTECTED]> wrote: > Personally, I like Maxima better than Yacas, but in both cases the solution > (at least a minimal one) should be doable: A small program which pipes R > commands into a terminal running Maxima/Yacas and taking the output back into > R. I am not much into the technical details, but isn't that what can be done > with the COM automatation server on Windows?? (I don't know what the > equivalent would be on unix?). > Best regards > Søren > > ________________________________ > > Fra: Simon Blomberg [mailto:[EMAIL PROTECTED] > Sendt: on 13-07-2005 01:52 > Til: Duncan Murdoch; Gabor Grothendieck > Cc: Søren Højsgaard; r-devel@stat.math.ethz.ch > Emne: Re: [Rd] Computer algebra in R - would that be an idea?? > > > > 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, Søren Højsgaard <[EMAIL PROTECTED]> 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 > > > >______________________________________________ > >R-devel@r-project.org mailing list > >https://stat.ethz.ch/mailman/listinfo/r-devel > > 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 > F: +61 2 6125 0757 > CRICOS Provider # 00120C > > > > > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
