A simple scatter plot with D3 showing the 80 Cereals dataset.

This iterates on the previous version of the visualization in two ways.

First, a color channel is introduced, interpolated between green and red. Greener data points have less sodium, while redder points had more. I was expecting to see a more linear correlation between calories and sodium, however oddly it seemed that the highest concentration of high-sodium cereals had an "average" calorie value.

Second, the user is now able to mouse over individual points on the graph to see the name of the cereal in question.