[R] [R-pkgs] New package Ryacas

[Cleber N. Borges]

Hello,

First,
I would like to congratulations for very cool package! It's very 
nice
idea!...
Secondly,
Is there a way to send R'objects (variables) to yacas and make 
symbolic
operations??
for example:

d <- diag(3)
a <- "A"

yacas(   d * a )

Thanks,
Cleber Borges


Gabor Grothendieck wrote:

>Ryacas is an R interface to the free yacas computer algebra
>system.  Ryacas allows one to send R expressions,
>unprocessed yacas strings and certain other R objects to a
>separate yacas process from R and get back the result.  It
>also has facilities for manipulating yacas strings and R
>expressions destined for yacas processing.
>
>It can be used for exact arithmetic, symbolic math, ASCII
>pretty printing and translating R to TeX.
>
>
>Online info.  For overview, pointers to additional
>information, installation instructions and a sample session
>see:
>
>    http://code.google.com/p/ryacas/
>
>The vignettes can be viewed online here:
>
>    http://ryacas.googlecode.com/svn/trunk/inst/doc/Ryacas.pdf
>    http://ryacas.googlecode.com/svn/trunk/inst/doc/Ryacas-Sym.pdf
>
>
>More. Once Ryacas is installed, pointers to additional
>information can be found with these R commands:
>
>    library(Ryacas)
>    package?Ryacas
>
>
>---
>  
>