Your journey into the world of visualization starts with this observation-numbers are explicit and objective, visuals are implicit and subjective. Hidden within the numbers, shapes, and colors is a message that is subject to the interpretation of the viewer. Realize what happens as the visual image transforms through our senses into an understanding. The brain will subconsciously pass judgement in determining what information is essential and what is supportive. Sight becomes perception. Perception becomes cognition and knowledge (Cairo, 2013).
If sight is perception, then data storytellers must consider how to use visual elements to call attention to the most critical information. According to Cairo (2013), The brain is much better at quickly detecting shade variations than shape differences (p. 113). He provides tips on how to call the user's attention to particular portions of a visual. First, he suggests using pure colors to highlight the...