When to map geographic data

- [Instructor] There's a temptation that…where we have geographic data we put it into a map.…Now in some cases that could be a really good choice…and can enhance your visualization,…but other times it can actually be a hindrance…to understanding what's going on in the data.…We can look at two examples,…one where a map is a good choice of the visualization…and the other where it's actually hurting our understanding.…Rules I'll talk about, one particular thing…you have to bear in mind, colors with mapping.…So first of all, let's just build a map,…so we're going to do a filled map…where each state is going to be colored…by the amount of sales that that state's produced.…

This is a common kind of visualization…that you tend to see with a map.…We'll color in each state by a particular value.…The darker the color indicates the higher the value…that we're encoding.…Now the problem is, is that when we look at this map,…we see large areas of color, not necessarily the intensity…of the color.…One of the things we might want to see from this map is…