Matthew Ericson writes about when to map – and when not to map:

“[S]ometimes the reflexive impulse to map the data can make you forget that showing the data in another form might answer other — and sometimes more important — questions.

“So, when should you use a form other than than a map?

“1. When the interesting patterns aren’t geographic patterns

“2. When the geographic data is more effective for analysis”

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