9.6 Some concepts of interaction

Some fundamental concepts (adapted from Wikipedia)…

  • Brushing : Paintbrushing (pointer, rectangle, lasso) data, directly changing color or glyph of elements of plot
  • Painting (= persistent brushing): Group points into clusters and proceed to other operations, such as to comparing groups
  • Identification (labeling, label brushing) : Bringing cursor near a point or edge in a scatterplot etc., causes a label to appear that identifies the plot element (also called mouseover or hoover)
  • Scaling: Scales map data onto window; Zooming in; Change aspect ratio
  • Linking: Connects elements selected in one plot with elements in another plot
    • One-to-one: Both plots show different projections of same data; Point in one plot corresponds to exactly one point in the other
    • Area plots: Brushing any part of an area has the same effect as brushing it all and is equivalent to selecting all cases in the corresponding category

9.6.1 Example/Exercise (1)

  • What kind of interactive operations do the plots below allow you to do? On what graph element do they operate? What would you do to give the impression of a stronger relationship?

9.6.2 Example/Exercise (2)

  • What kind of interactive operations do the plots below allow you to do? On what graph element do they operate? What is the different between the two plots below?