• A heat map is a graphical representation of data in two dimensions, using colors to show different factors.

  • Heatmaps are a useful visual aid for the viewer to quickly share statistical or data-driven information.
  • On the other hand, heat maps provide only selective information, so they cloud the overall picture of the problem; Heatmaps are also often prepared when only preliminary information is available.
  • While heatmaps are used in a variety of industries and circumstances, they are commonly used to show user activity on a website.
  • Heat maps came into vogue after the recession that began in 2008.