Visualization is Art and Science

How do you go about buying a car? If you’re like a lot of people, you probably start by looking at pictures, but they can’t possibly tell you the whole story. For instance, how can you tell what the odometer reads if you’re only looking at a glossy sales slick?

Pictures can communicate a lot. For instance, a graph with bars both above and below the? x-axis can help explain when things are going good (when bars are above the zero line) and when things are going bad (when bars are below the zero line).

But it’s important to look beyond photos and graphs to make sure we’re understanding them correctly so we’re not manipulated by our own perceptions.

Presenter: Robert Kosara, Department of Computer Science at UNC Charlotte