Not only R makes data visualization & statistical computing easy, elegant and beautiful, but R also contains the most advanced statistical methods/techniques.
I use the open-source software R, developed by CRAN, and typically create some R-script(s) for data analysis, data visualization and statistical modeling.
If you are not familiar with R, don’t worry, I can give you a quick introduction to R and coach you through it with the focus/aim at a solution of your problem.
More about R and some links
R is an open source language and environment for statistical computing & graphics. It is available for Linux, Windows and Mac systems. It can be extended easily via packages. R is based on commands. Writing/editing scripts can be easily done via an interface/editor such as RStudio.