Extract saccades using an algorithm proposed by Otero-Millan et al. (2014) doi:10.1167/14.2.18.

Usage

method_om(x, y, vel, acc, sample_rate, trial, options)

x: Gaze x coordinate, _arbitrary units_ as threshold velocity is computed in units of standard deviation.
y: Gaze x coordinate, _arbitrary units_ as threshold velocity is computed in units of standard deviation.
vel: Velocity data.frame with columns x, y, amp.
acc: Acceleration data.frame with columns x, y, amp.
sample_rate: Sample rate in Hz.
trial: Trial id, so that trial borders are respected when computing velocity and saccades.
options: Named list with method options. See details for further information.

logical vector marking samples that belong to saccades

Method options, please refer to Otero-Millan et al. (2014) for details on parameters and the rationale for default values.

om_minimal_inter_peak_time_ms Minimal inter-peak interval in milliseconds. Defaults to 30.
om_maximal_peaks_per_second Maximal allowed number of peaks per second. Defaults to 5.
om_velocity_threshold_deg_per_sec Threshold saccade velocity in °/s. Defaults to 3.
om_pca_variance_threshold Minimal variance explained by retained rotated components. Defaults to 0.05.

# Do not run this function directly, use extract_saccades() instead