shutterstock/rickshaw — pull request #247 by diwu1989 (2013-05-14 19:20:05+00:00)
Title: Adding a scale option to series, adapting hover detail to be scale aware, and a scale-Y axis

This is useful for putting two different series of different magnitude normalized into the same graph and having multiple axis. See the scaled.html example.

Rickshaw.Graph.Axis.Scaled inherits from Rickshaw.Graph.Axis.Y to enable code sharing.