These are some of the web resources I found very useful for me. I put them together if it saves time for me or someone else.
- The cookbook for R site provides some examples of ggplot2 graphics.
- A nice presentation by Scott Murray about D3 transition. This is most useful for the very beginner who wants to work with D3.
- Vega , a higher level data visualization tool.
- Interactive map from R by RMAP
Open Access Data !