Displays hierarchical data as nested rectangles where each rectangle's size represents a value. Treemaps make efficient use of space and allow viewers to quickly spot the largest categories at any level of the hierarchy.
Where the World Spends on Space — $60B+ by Country & Program
Best for
- Visualizing hierarchical data with size-based comparisons
- Showing part-to-whole relationships across multiple levels
- Displaying large datasets in a compact space
Avoid when
- You need to show exact values — small rectangles are hard to read
- The hierarchy has too many levels — nesting becomes confusing
- You need to compare items that are not part of the same hierarchy