warp_srvf

Applies a warping function to a given SRVF

Performs alignment, PCA, and modeling of multidimensional and
unidimensional functions using the square-root velocity framework
(Srivastava et al., 2011 <doi:10.48550/arXiv.1103.3817> and Tucker et al., 2014
<DOI:10.1016/j.csda.2012.12.001>). This framework allows for elastic
analysis of functional data through phase and amplitude separation.

J Derek Tucker

fdasrvf

Elastic Functional Data Analysis

J. Derek Tucker

Aymeric Stamm

warp_srvf function

<dl><dt>qfun</dt>
<dd>A function that takes a numeric vector \(s\) of values in
\([0, 1]\) as input and returns the values of the SRVF of an underlying
curve at \(s\).</dd>
<dt>gamfun</dt>
<dd>A function that takes a numeric vector \(s\) of values in
\([0, 1]\) as input and returns the values of a diffeomorphic warping
function at \(s\).</dd>
<dt>betafun</dt>
<dd>A function that takes a numeric vector \(s\) of values in
\([0, 1]\) as input and returns the values of the underlying curve at
\(s\). Defaults to <code>NULL</code>.</dd></dl>

Arguments

Applies a warping function to a given SRVF — warp_srvf

<dl>

<dt>qfun</dt>
<dd>A function that takes a numeric vector \(s\) of values in
\([0, 1]\) as input and returns the values of the SRVF of an underlying
curve at \(s\).</dd>


<dt>gamfun</dt>
<dd>A function that takes a numeric vector \(s\) of values in
\([0, 1]\) as input and returns the values of a diffeomorphic warping
function at \(s\).</dd>


<dt>betafun</dt>
<dd>A function that takes a numeric vector \(s\) of values in
\([0, 1]\) as input and returns the values of the underlying curve at
\(s\). Defaults to <code>NULL</code>.</dd>

</dl>

warp_srvf: Applies a warping function to a given SRVF

Description

Usage

Value

Arguments

Examples