Hi, It looks like SAGE might be another option,
http://www.sagemath.org/index.html though I never tried it. HTH, baptiste ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.