combine_data

Combine two <code>data.table</code>s, either two force-plate data, two exeperimental data, or one
force-plate and one experimental data.

Process raw force-plate data (txt-files) by segmenting them into trials and, if needed, calculating (user-defined) descriptive
statistics of variables for user-defined time bins (relative to trigger onsets) for each trial. When segmenting the data a baseline
correction, a filter, and a data imputation can be applied if needed. Experimental data can also be processed and combined with the
segmented force-plate data. This procedure is suggested by Johannsen et al. (2023) <doi:10.6084/m9.figshare.22190155> and some of the
options (e.g., choice of low-pass filter) are also suggested by Winter (2009) <doi:10.1002/9780470549148>.

Raphael Hartmann

forceplate

Processing Force-Plate Data

Anton Koger

Leif Johannsen

combine_data function

<dl><dt>dt1</dt>
<dd>A <code>data.table</code> of the class <code>fp.segm</code>, <code>fp.tl</code>, or <code>exp.prep</code>.</dd>
<dt>dt2</dt>
<dd>A <code>data.table</code> of the class <code>fp.segm</code>, <code>fp.tl</code>, or <code>exp.prep</code>. Make
sure the two data.table have either the same number of rows or the same columns.</dd>
<dt>by</dt>
<dd>A list of three variable names in the experimental data that reflect the
subj (subject number), block (block number), and trial (trial number) in the
force-plate data. This argument is only necessary for combining experimental
data with force-plate data.</dd>
<dt>continuous</dt>
<dd>A logical value. Default is <code>FALSE</code>, meaning the variable for
the trials in the used experimental data.table counts for each block separately,
that is in each block it counts from 1 to the number of trials in that block. If
<code>TRUE</code> it is assumed that the trials are counted from 1 to the total number
of trials of a subject.</dd></dl>

Arguments

Raphael Hartmann &amp; Anton Koger

Author

Combine Data Tables — combine_data

<dl>

<dt>dt1</dt>
<dd>A <code>data.table</code> of the class <code>fp.segm</code>, <code>fp.tl</code>, or <code>exp.prep</code>.</dd>


<dt>dt2</dt>
<dd>A <code>data.table</code> of the class <code>fp.segm</code>, <code>fp.tl</code>, or <code>exp.prep</code>. Make
sure the two data.table have either the same number of rows or the same columns.</dd>


<dt>by</dt>
<dd>A list of three variable names in the experimental data that reflect the
subj (subject number), block (block number), and trial (trial number) in the
force-plate data. This argument is only necessary for combining experimental
data with force-plate data.</dd>


<dt>continuous</dt>
<dd>A logical value. Default is <code>FALSE</code>, meaning the variable for
the trials in the used experimental data.table counts for each block separately,
that is in each block it counts from 1 to the number of trials in that block. If
<code>TRUE</code> it is assumed that the trials are counted from 1 to the total number
of trials of a subject.</dd>

</dl>

combine_data: Combine Data Tables

Description

Usage

Value

Arguments

Author