> I feel like a scatterplot highlight should be the easiest god damn thing ever. For a charting library, yes I would expect this to be easy. But to be fair, D

> I feel like a scatterplot highlight should be the easiest god damn thing ever. For a charting library, yes I would expect this to be easy. But to be fair, D3js is not a charting library. The OP here is showing their version of a charting library based off of D3js. Remember, D3 = Data Driven Documents, which can be leveraged for extremely fast interactive visualizations For further clarification here is the goal/definition from D3js.org: "D3 allows you to bind arbitrary data to a Document Object Model (DOM), and then apply data-driven transformations to the document. For example, you can use D3 to generate an HTML table from an array of numbers. Or, use the same data to create an interactive SVG bar chart with smooth transitions and interaction." A charting library wouldn't give you the flexibility to do this: http://bl.ocks.org/mbostock/d8e15a0ab7f85818a5bd http://bl.ocks.org/mbostock/d8e15a0ab7f85818a5bd or this: http://bost.ocks.org/mike/shuffle/ http://bost.ocks.org/mike/shuffle/ Edit: a must see are the creations from the man himself. Mike Bostock http://bl.ocks.org/mbostock http://bl.ocks.org/mbostock