Extract tracks nearest to a given position

get_tracks_around_centre(
  local,
  centre,
  max_distance = 200,
  max_height = 200,
  max_tracks = 100,
  relevant = 1,
  rate = 2
)

Arguments

local: the connection to the local database
centre: a data frame with a single row and x and y coordinates of the centre. Coordinates in CRS 31370
max_distance: Use all equal time tracks where the minimum distance in meters between the track and the centre is smaller than max_distance.
max_height: Only use track points with an altitude lower than max_height. Defaults to 200 meter.
max_tracks: Return only the nearest max_tracks tracks.
relevant: The value of the relevant variable of the species table in the database. Select only tracks from species with a value equal or larger than this number.
rate: The time difference between points to calculate the step length and turning angles.