species_raw: A dataframe consisting of raw GPS observations. It should have at least four columns namely "animal_id", "datetime", "latitude|_rad", and "longitude_rad". "latitude|_rad", and "longitude_rad" are latitude and longitude values in radians respectively. See function "get_coordinates_in_radian" to get these values.
interactions: A dataframe of interactions obtained from raw GPS observations using the function "get_interactions"
n_cores: Number of cores for parallel processing, default is 1