Fig. 4
From: Scale-insensitive estimation of speed and distance traveled from animal tracking data
Figure depicting the results of simulations quantifying distance traveled via straight line displacement, and the continuous-time estimation method for manipulations of (a) sampling frequency; (b) the amount of random, irregular data loss; (c) the tortuosity of the underlying movement; and (d) the amount of measurement error. For the red line, the shaded area represents the 95% CIs (SLD estimates, both model-smoothed and conventional, do not come with CIs). The arrow in panel (a) depicts the point at which the sampling interval, Δt, is the same as the velocity autocorrelation timescale, τv. In all panels, the dashed line at y = 1 depicts the true value to which the estimates should converge and the x-axis is log scaled. Note: the truth has been scaled to 1