ggrothendieck at gmail.com
Wed May 6 00:59:09 CEST 2009
You haven't provided any code so we have no idea what
the problem is. Make sure you have read the troubleshooting
sections on the home page?
Here is an example:
Loading required package: XML
> x <- Sym("x")
 "Starting Yacas!"
expression((x + 1) * (x - 1))
You can also try the rSymPy package.
Installation has fewer gotchas:
Loading required package: rJava
> sympy("var('x')") # define x to be symbolic
 "-(1 + x)*(1 - x)"
See home page at http://rsympy.googlecode.com
On Tue, May 5, 2009 at 6:41 PM, Hassan Mohamed
<hassan_hany_fahmy at yahoo.com> wrote:
> as I find problems with yacas package...
> is there any R function equivalent to the yacas function "Factor" ?
> the factor function which i found in the R help is not the same.
> it doesn't factor an algebraic expression......
> [[alternative HTML version deleted]]
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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