This tutorial guides you step by step through a bar chart with dynamic updates (the link is to part 2, which deals with the updating): http://mbostock.github.c

This tutorial guides you step by step through a bar chart with dynamic updates (the link is to part 2, which deals with the updating): http://mbostock.github.com/d3/tutorial/bar-2.html http://mbostock.github.com/d3/tutorial/bar-2.html