Fig. 12
From: A Non-Laboratory Gait Dataset of Full Body Kinematics and Egocentric Vision

Commonly used measures of complexity provide quantitative insight into differences in activity type or behavior in and out of the laboratory. (a) depicts the percent variance explained by an increasing number of principal components, and (b) depicts the number of components necessary to represent 95% of the variability. These are both commonly used quantitative measures of complexity, yet they indicate, counterintuitively, that left and right sidestepping are more complex than obstacle avoidance or backward walking.