assign_epoch_start_time

Process GPS and accelerometry data to generate walk bouts. A walk bout is a period of activity with accelerometer movement matching the patterns of walking with corresponding GPS measurements that confirm travel. The inputs of the 'walkboutr' package are individual-level accelerometry and GPS data. The outputs of the model are walk bouts with corresponding times, duration, and summary statistics on the sample population, which collapse all personally identifying information. These bouts can be used to measure walking both as an outcome of a change to the built environment or as a predictor of health outcomes such as a cardioprotective behavior. Kang B, Moudon AV, Hurvitz PM, Saelens BE (2017) <doi:10.1016/j.trd.2017.09.026>.

Lauren Blair Wilner

walkboutr

Generate Walk Bouts from GPS and Accelerometry Data

Stephen J Mooney

assign_epoch_start_time function

<dl><dt>gps_data</dt>
<dd>A data frame with GPS data including a column of timestamps and columns for latitude and longitude</dd>
<dt>epoch_length</dt>
<dd>The duration of an epoch in seconds</dd></dl>

Arguments

Assign Epoch Start Time — assign_epoch_start_time

<dl>

<dt>gps_data</dt>
<dd>A data frame with GPS data including a column of timestamps and columns for latitude and longitude</dd>


<dt>epoch_length</dt>
<dd>The duration of an epoch in seconds</dd>

</dl>

assign_epoch_start_time: Assign Epoch Start Time

Description

Usage

Value

Arguments

Details