cows_5hz

Acceleration data collected with triaxial accelerometers (MSR145, MSR Electronics, Switzerland) attached to the left hind leg of two dairy cows (cow01, cow02). The accelerometer sampling frequency was 5 Hz. The forward, up, and right acceleration correspond to body relative directions as used in triact (see <code>vignette("introduction", package = "triact")</code> and Simmler &amp; Brouwers, 2024).
<table class="table">
<tr><td>colname</td><td>type</td><td>description</td><td>id</td></tr>
<tr><td>Factor</td><td>unique id for the cow</td><td>time</td><td>POSIXct</td></tr>
<tr><td>timestamp</td><td>acc_fwd</td><td>numeric</td><td>acceleration from forward axis (units: g)</td></tr>
<tr><td>acc_up</td><td>numeric</td><td>acceleration from up axis (units: g)</td><td>acc_right</td></tr>
</table>

Assists in analyzing the lying behavior of cows from raw data
recorded with a triaxial accelerometer attached to the hind leg of a cow. Allows
the determination of common measures for lying behavior including total lying duration, the
number of lying bouts, and the mean duration of lying bouts. Further capabilities are the
description of lying laterality and the calculation of proxies for the level of physical
activity of the cow. Reference: Simmler M., Brouwers S. P. (2024) <doi:10.7717/peerj.17036>.

Michael Simmler

triact

Analyzing the Lying Behavior of Cows from Accelerometer Data

Stijn Pieter Brouwers

cows_5hz function

Acceleration data collected with triaxial accelerometers (MSR145, MSR Electronics, Switzerland) attached to the left hind leg of two dairy cows (cow01, cow02). The accelerometer sampling frequency was 5 Hz. The forward, up, and right acceleration correspond to body relative directions as used in triact (see <code>vignette("introduction", package = "triact")</code> and Simmler &amp; Brouwers, 2024).
<table class='table'>
<tr><td>colname</td><td>type</td><td>description</td><td>id</td></tr>
<tr><td>Factor</td><td>unique id for the cow</td><td>time</td><td>POSIXct</td></tr>
<tr><td>timestamp</td><td>acc_fwd</td><td>numeric</td><td>acceleration from forward axis (units: g)</td></tr>
<tr><td>acc_up</td><td>numeric</td><td>acceleration from up axis (units: g)</td><td>acc_right</td></tr>
</table>

cows_5hz: Cow acceleration data

Description

Usage

Arguments

References

colname	type	description	id
Factor	unique id for the cow	time	POSIXct
timestamp	acc_fwd	numeric	acceleration from forward axis (units: g)
acc_up	numeric	acceleration from up axis (units: g)	acc_right