Chapter 5
Visualizing Proportions
Time series data is naturally grouped by, well, time. A series of events happen during a specific time frame. Proportion data is also grouped, but by categories, subcategories, and population. By population, I don’t mean just human population. Rather, population in this case represents all possible choices or outcomes. It’s the sample space.
In a poll, people might be asked if they approve, disapprove, or have no opinion on some issue. Each category represents something, and the sum of the parts represent a whole.
This chapter discusses how to represent the individual categories, but still provides the bigger picture of how each choice relates to the other. You use some of what you learned in the previous chapter and get your first taste of interactive graphics using HTML, CSS, and JavaScript and then have a look at graphics with Flash.
