Distortion Techniques for Structure-Driven Layouts

Distortion a common post-processing step

Emphasize subsets while maintaining context (e.g., lens techniques)

Shape distortion to convey area or other scalar value

Random jitter, shifting to reduce overlap

Add space to emphasize differences

Trade off between screen utilization, clarity, and amount of information conveyed

Some overlap acceptable for some applications

Dynamic mixing an important feature (rarely found)

  

Figure: Profile glyphs of average values from hierarchical partioning of the Iris data using the DySect partitioning algorithm [2]. Second tree has added space placed between adjacent non-siblings, which emphasizes sibling relationships.