Mike Bostock just posted some examples on more accurate line graph mouseovers: http://bl.ocks.org/mbostock/8027835 http://bl.ocks.org/mbostock/8027835 General

Mike Bostock just posted some examples on more accurate line graph mouseovers: http://bl.ocks.org/mbostock/8027835 http://bl.ocks.org/mbostock/8027835 Generally I like google finance's approach of showing mouse over data. Static legend, with everything displayed in one row so it doesn't take up too much horizontal space. https://www.google.com/finance?q=INDEXDJX%3A.DJI&ei=DfOxUpCAGsrn0QHp7gE https://www.google.com/finance?q=INDEXDJX%3A.DJI&ei=DfOxUpCA...