Dear Shajith,
I am not sure whether there is a single package for numerical analysis and
plotting
in Ruby.
However, you can access the functionality of the GNU scientific library
through ruby-gsl
_http://sourceforge.net/projects/ruby-gsl/_
(http://sourceforge.net/projects/ruby-gsl/)
When I need to plot something, I use gnuplot. There is a binding for ruby
which I haven't tried to much yet...
_http://rgnuplot.sourceforge.net_ (http://rgnuplot.sourceforge.net)
Best regards,
Axel