direction: Computes the direction of movement for each tag detection

In InStreamFisheries/PITR: Functions to collate, manage and summarize PIT telemetry data

Description

Function that determines the direction of movement for each tag detection on each antenna if there were two or more antennas deployed in a study.

Usage

direction(data)

Arguments

data	telemetry dataset created using old_pit, new_pit or array_config

Details

Antennas must be numbered sequentially and any antennas from single readers that have not be renamed using array_config (i.e., the antenna number is NA) will not be considered by the function. Users can apply the direction function to the original dataset created by the old_pit or new_pit function, or use an updated dataset created by the array_config function.

Value

Data frame summarizing the direction of movement.

Examples

# Load test dataset containing detections from a multi reader with two antennas
oregon_rfid <- new_pit(data = "oregon_rfid", test_tags = NULL, print_to_file = FALSE, time_zone = "America/Vancouver")

# Determine the direction of fish movement
direction(data = oregon_rfid)

InStreamFisheries/PITR documentation built on Jan. 7, 2021, 1:02 p.m.