Fig. 1From: Limitations of using surrogates for behaviour classification of accelerometer data: refining methods using random forest models in CapridsCaptive Alpine ibex with a collar-attached ‘Daily Diary’ tag, with a tri-axial accelerometer and magnetometer, depicting the three orthogonal axes (X, Y, Z) recorded at 40 Hz. Pitch and Roll, which are derived from the static acceleration of the X and Y axes [1], respectively, are shown (Photo: Dickinson, E.R.)Back to article page