Hi guys another option would be David Gillespie's "calc", which is written in emacs lisp.
This is a stable system with (AFAICS) as large user base. Unfortunately, it doesn't seem to be actively developed, as the last stable version (2.02f) appears to be 1996. I don't know if this would be a contraindication. Robin On 13 Jul 2005, at 02:36, Gabor Grothendieck wrote: > 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 > -- Robin Hankin Uncertainty Analyst National Oceanography Centre, Southampton European Way, Southampton SO14 3ZH, UK tel 023-8059-7743 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
