Fig. 2From: Metrics for describing dyadic movement: a reviewTwo examples of the derivation of LixnT and HAI. LixnT was computed using expected frequencies. HAI was computed with \(K_{\delta }(t) = \mathbbm {1}{\{ d_{t}^{A,B} < 5 \}}\). Circles and squares represent locations of two different individuals. The numbers inside as well as the arrows represent the time sequence of both tracks. Grey lines correspond to the distances between simultaneous fixes; their values are shown. The dashed lines circle an arbitrary reference areaBack to article page