Making an interactive bubble plot

My first encounter with a bubble plot was while watching a TED video of Hans Roslling. The video led me to search for creating bubble plots in R; a very good introduction to this is available on the Flowing Data website. The advantage of a bubble plot is that it allows us to visualize a third variable, which in our case would be the size of the bubble.

In this recipe, I have made use of the googleVis package to plot a bubble plot but you can also implement this in R. The advantage of the Google Chart API is the interactivity and the ease with which they can be attached to a web page. Also note that we could also use squares instead of circles, but this is not implemented in the Google Chart API yet.

In order to ...

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