Anyhow, one of the samples on the d3 site used a drillable bar chart, where users can start at an aggregate level and then dig into the details by clicking on a given bar – a simple concept that is beautiful when d3 is the platform.
This has led me to my first chart, with more to come. The initial example looks at home runs by team for the 1995-2010 seasons, and begins at the season level. Once a season is selected, we drill into homers at the team level, and then at the individual batter level. It's fast, intuitive, and a heck of a lot more esthetically pleasing than your typical report output from any one of dozens of high-powered reporting tools.
To see it in action, click here