process_gps_data_into_gps_epochs

The input schema for the accelerometry data is <code>time</code>, <code>latitude</code>, <code>longitude</code>, and <code>speed</code>.<ul>
<li><code>time</code> should be a column in date-time format, in the UTC time zone, with no null values.</li>
<li><code>latitude</code> should be a numeric, non-null latitude coordinate between -90 and 90</li>
<li><code>longitude</code> should be a numeric, non-null longitude coordinate between -180 and 180</li>
<li><code>speed</code> should be a numeric, non-null value in kilometers per hour</li>
</ul>

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

process_gps_data_into_gps_epochs function

<dl><dt>gps_data</dt>
<dd>A data frame containing GPS data. Must have columns "Latitude", "Longitude"</dd>
<dt>...</dt>
<dd>Additional arguments to be passed to the function.</dd>
<dt>collated_arguments</dt>
<dd>A named list of arguments, used to avoid naming conflicts when calling this function as part of a pipeline. Optional.</dd></dl>

Arguments

Convert GPS data into GPS epochs — process_gps_data_into_gps_epochs

<dl>

<dt>gps_data</dt>
<dd>A data frame containing GPS data. Must have columns "Latitude", "Longitude"</dd>


<dt>...</dt>
<dd>Additional arguments to be passed to the function.</dd>


<dt>collated_arguments</dt>
<dd>A named list of arguments, used to avoid naming conflicts when calling this function as part of a pipeline. Optional.</dd>

</dl>

process_gps_data_into_gps_epochs: Convert GPS data into GPS epochs

Description

Usage

Value

Arguments

Details