add_date_and_format

This function takes a data frame of activity counts and adds a column of time stamps in POSIXct format.
The time stamps start at "2012-04-07 00:00:30" and increase by 30 seconds for each row of the data frame.

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

add_date_and_format function

<dl><dt>counts</dt>
<dd>a data frame containing activity counts</dd></dl>

Arguments

Add date and format to activity counts — add_date_and_format

<dl>

<dt>counts</dt>
<dd>a data frame containing activity counts</dd>

</dl>

add_date_and_format: Add date and format to activity counts

Description

Usage

Value

Arguments