missionbay2: Mission Bay navigation trials.

In animalTrack: Animal track reconstruction for high frequency 2-dimensional (2D) or 3-dimensional (3D) movement data.

Description

Data from calibrated field trials in Mission Bay, CA.

Usage

data(missionbay2)

Format

A data frame with 3,020 observations on the following 27 variables.

date

a Date

time

a POSIXlt

year

year

month

month

day

day

hour

hour

minute

minute

second

second

speed

calibrated speed (meters per second)

depth

depth (meters)

mx_raw

a numeric vector of magnetometer X-axis values (in bits)

my_raw

a numeric vector of magnetometer Y-axis values (in bits)

mz_raw

a numeric vector of magnetometer Z-axis values (in bits)

ax_raw

a numeric vector of accelerometer X-axis values (in bits)

ay_raw

a numeric vector of accelerometer Y-axis values (in bits)

az_raw

a numeric vector of accelerometer Z-axis values (in bits)

mx_scaled

a numeric vector of calibrated magnetometer X-axis values scaled from -1 to +1

my_scaled

a numeric vector of calibrated magnetometer Y-axis values scaled from -1 to +1

mz_scaled

a numeric vector of calibrated magnetometer Z-axis values scaled from -1 to +1

ax_scaled

a numeric vector of calibrated accelerometer X-axis values scaled from -1 to +1

ay_scaled

a numeric vector of calibrated accelerometer Y-axis values scaled from -1 to +1

az_scaled

a numeric vector of calibrated accelerometer Z-axis values scaled from -1 to +1

roll

roll values in radians (-π to +π)

pitch

pitch values in radians (-π/2 to +π/2)

heading_mag

magnetic heading direction in radians (0 - 2π)

heading_geo

geographic heading (corrected for declination) direction in radians (0 - 2π)

trial

trial number, 1-4

Details

Four trials were conducted in which an instrument that was recording speed, magnetic fields, acceleration, depth, and time was towed behind a boat to a series of known locations. During each trial, the boat returned to the starting location after a short trip.

Source

These data were recorded with great seamanship by Bill Hagey and Randall Davis

Examples

data(missionbay2)

animalTrack documentation built on May 2, 2019, 5:07 a.m.