FIGURE 6

(A) 3-D Timeline configured to display past as down and future as up. (B) Diagram showing how 3-D timelines pass through terrain locations. 3-D timelines are locked in terrain space and are affected by changes in perspective. (C) Viewer facing timelines rotate to face the viewpoint no matter how the terrain is rotated in 3-D. (D) Screenshot of GeoTime with time slider at bottom and moveable time scale at right. The green line traces one entity's movement in time and geography. (E) Screenshot of GeoTime with overhead view and time slider advanced forward in time, to a different part of the event data set, from Figure 6. (F) Time slider with variable past+future ranges+handles. (G) Pointing at an entity or activity drills down to additional information. (H) Screenshot of GeoTime with ink annotation.