D3 is, like all chart libs, great if it had exactly what you need. But if you tread of the beaten path it's best to roll your own imo. Keep in mind, D3 isn't a

D3 is, like all chart libs, great if it had exactly what you need. But if you tread of the beaten path it's best to roll your own imo. Keep in mind, D3 isn't a graphing library. It's a data binding library.