What are Treemaps?
Treemaps are used to visualize large data of complex hierarchies data sets that are often hard to interpret. On certain scenarios, making use of charts such as bar charts or pie chart for easy understanding.
Two types of information that treemaps capture:
Value of the individual data points
Hierarchy structure
Example:
A hierarchical tree diagram, showing the structure of the S&P 500.
You can find more information on Nielsen Norman Group about Treemaps.













