A nice topic, but it seems that along with advising some good practices and ideas, there are a few problematic things. For example: - usage of sequential color

A nice topic, but it seems that along with advising some good practices and ideas, there are a few problematic things. For example: - usage of sequential color scales for categorical data (compare with http://colorbrewer2.org/ http://colorbrewer2.org/), - lack of interactivity (one of the main advantage of JS plots is ability to check data with mouseover; for example - which country is this particular dot), - in general some aesthetic considerations (e.g. http://d3js.org/ http://d3js.org/ is not only a library, but a whole philosophy of doing nice visualizations; including small, but visually important things, like the choice of colors). As already advised (by couchand), that after Edward Tufte and Mike Bostock, there is a high baseline level for information beauty and clarity.