Quick combination of parallel coordinates and rCharts to show returns by year and annualized returns since 2007 of three index ETFs (SPY, EEM, and VEA). This could easily be extended to other risk/return data points on a much larger sets of indices, asset classes, or securities.
Thanks to d3.js, parallel coordinates, rCharts, R, and PerformanceAnalytics.
Data from Yahoo! Finance for personal educational use.