R Reference Card
Vincent Zoonekynd's Blog: The grammar of graphics
some graphs with sample R code
Producing Simple Graphs with R
RubyForge: RSRuby: Project Info
ruby wrapper for R
The R Project for Statistical Computing
R-Cookbook.com | Delicious, statistical-computing recipes
R Graph Gallery :: Home
Developer's Guide - Google Chart API - Google Code
Fitting curves to data using Ruby and the GNU Scientific Library