g.part5.definedays

Not intended for direct use by GGIR users.
 Defines when day windows start and end as part of g.part5.

internal

A tool to process and analyse data collected with wearable raw acceleration sensors as described in Migueles and colleagues (JMPB 2019), and van Hees and colleagues (JApplPhysiol 2014; PLoSONE 2015). The package has been developed and tested for binary data from 'GENEActiv' <https://activinsights.com/> and GENEA devices (not for sale), .csv-export data from 'Actigraph' <https://theactigraph.com> devices, and .cwa and .wav-format data from 'Axivity' <https://axivity.com>. These devices are currently widely used in research on human daily physical activity. Further, the package can handle accelerometer data file from any other sensor brand providing that the data is stored in csv format and has either no header or a two column header. Also the package allows for external function embedding.

Vincent T van Hees

GGIR

Raw Accelerometer Data Analysis

Jairo H Migueles

Severine Sabia

Matthew R Patterson

Zhou Fang

Joe Heywood

Joan Capdevila Pujol

Lena Kushleyeva

Mathilde Chen

Manasa Yerramalla

Patrick Bos

Taren Sanders

Medical Research Council UK 

Accelting 

French National Research Agency 

Chenxuan Zhao

g.part5.definedays function

<dl> <dt>nightsi</dt>
<dd>Vector with indices for the midnights</dd> <dt>wi</dt>
<dd>Numeric to indicate window number</dd> <dt>indjump</dt>
<dd>Number of indices to jump</dd> <dt>nightsi_bu</dt>
<dd>See argument <code>nightsi</code> this is a backup of this object</dd> <dt>epochSize</dt>
<dd>Numeric epoch size in seconds</dd> <dt>qqq_backup</dt>
<dd>Backup of qqq object, which holds the start and end indices of a window</dd> <dt>ts</dt>
<dd>Data.frame with time series</dd> <dt>timewindowi</dt>
<dd>Timewindow definition either "MM" or "WW"</dd> <dt>Nwindows</dt>
<dd>Number of windows in the data</dd> <dt>qwindow</dt>
<dd>qwindow argument</dd> <dt>ID</dt>
<dd>ID of participant</dd></dl>

Arguments

Vincent T van Hees &lt;v.vanhees@accelting.com&gt;

Author

Fix missing night in part 4 output — g.part5.definedays

<dl>

 <dt>nightsi</dt>
<dd>Vector with indices for the midnights</dd>

 <dt>wi</dt>
<dd>Numeric to indicate window number</dd>

 <dt>indjump</dt>
<dd>Number of indices to jump</dd>

 <dt>nightsi_bu</dt>
<dd>See argument <code>nightsi</code> this is a backup of this object</dd>

 <dt>epochSize</dt>
<dd>Numeric epoch size in seconds</dd>

 <dt>qqq_backup</dt>
<dd>Backup of qqq object, which holds the start and end indices of a window</dd>

 <dt>ts</dt>
<dd>Data.frame with time series</dd>

 <dt>timewindowi</dt>
<dd>Timewindow definition either "MM" or "WW"</dd>

 <dt>Nwindows</dt>
<dd>Number of windows in the data</dd>

 <dt>qwindow</dt>
<dd>qwindow argument</dd>

 <dt>ID</dt>
<dd>ID of participant</dd>

</dl>

Fix missing night in part 4 output

Last chance! 50% off unlimited learning

g.part5.definedays: Fix missing night in part 4 output

Description

Usage

Value

Arguments

Author