Article Sedig, K., Parsons, P., Dittmer, M., & Haworth, R. (2013). Human-centered interactivity of visualization tools: Micro-and macro-level considerations. In Handbook of Human Centric Visualization (pp. 717-743). Springer New York. Interactivity at the micro level emerges from the structural elements of individual interactions. Interactivity at the macro level emerges from the combination, sequencing, and aggregate properties and relationships of interactions as a user performs an activity. Twelve micro-level interactivity elements and five macrolevel interactivity factors are identified and characterized.