Thanks for explaining. I quite like it. Given a rarely updating but detailed graph this would perform better. But you do lose the interactivity benefits of JS.

Thanks for explaining. I quite like it. Given a rarely updating but detailed graph this would perform better. But you do lose the interactivity benefits of JS. A candlestick approach might allow you to reduce the amount of data to send to the client in d3 if you use R to aggregate the data first. Have fun!