identify_trip: Identify fishing trips

In PabloMBooster/vmsR: For analysing VMS data

Identify fishing trips

Description

Identifies complete trajectories of fishing trips from VMS data, since the vessel departs and returns to harbor. You must know the distance from the VMS to the port, when this distance is less than a certain threshold (dharbor), it is assumed that the vessel is in port. The distance from the VMS to the port is calculated in the processing_vms function.

Usage

identify_trip(data = data, dharbor = 2, rmin = 6, vmax = 16, vmin = 16, hmax = 2.3,dur_viaje = 6)

Arguments

data	VMS dataset.
dharbor	threshold of distance to determine if the vessel is in harbor, it is expressed in nautical miles.
rmin	number of minimum VMS records that contains the trajectory of a fishing trip.
vmax	maximum velocity that a vessel can reach during the fishing trip.
vmin	threshold of velocity to consider the vessel as having made a fishing trip
hmax	maximum time between two contiguous vms records
dur_viaje	minimum trip duration

PabloMBooster/vmsR documentation built on June 29, 2023, 11:16 a.m.