sfourier_i

<code>sfourier_i</code> uses the inverse radii variation (equally spaced curvilinear abscissa) transformation to
calculate a shape, when given a list with Fourier coefficients, typically
obtained computed with sfourier.

The goal of 'Momocs' is to provide a complete, convenient,
reproducible and open-source toolkit for 2D morphometrics.
It includes most common 2D morphometrics approaches on outlines, open outlines,
configurations of landmarks, traditional morphometrics, and facilities for data preparation,
manipulation and visualization with a consistent grammar throughout.
It allows reproducible, complex morphometrics analyses and other morphometrics approaches
should be easy to plug in, or develop from, on top of this canvas.

Vincent Bonhomme

Momocs

Morphometrics using R

Julien Claude

sfourier_i function

<dl><dt>rf</dt>
<dd>A <code>list</code> with <code>ao</code>, <code>an</code> and <code>bn</code> components,
typically as returned by <code>sfourier</code>.</dd>
<dt>nb.h</dt>
<dd><code>integer</code>. The number of harmonics to calculate/use.</dd>
<dt>nb.pts</dt>
<dd><code>integer</code>. The number of points to calculate.</dd>
<dt>dtheta</dt>
<dd><code>logical</code>. Whether to use the dtheta correction method.
<code>FALSE</code> by default. When <code>TRUE</code>, tries to correct the angular difference between
reconstructed points; otherwise equal angles are used.</dd></dl>

Arguments

Inverse radii variation Fourier transform — sfourier_i

<dl>

<dt>rf</dt>
<dd>A <code>list</code> with <code>ao</code>, <code>an</code> and <code>bn</code> components,
typically as returned by <code>sfourier</code>.</dd>


<dt>nb.h</dt>
<dd><code>integer</code>. The number of harmonics to calculate/use.</dd>


<dt>nb.pts</dt>
<dd><code>integer</code>. The number of points to calculate.</dd>


<dt>dtheta</dt>
<dd><code>logical</code>. Whether to use the dtheta correction method.
<code>FALSE</code> by default. When <code>TRUE</code>, tries to correct the angular difference between
reconstructed points; otherwise equal angles are used.</dd>

</dl>

sfourier_i: Inverse radii variation Fourier transform

Description

Usage

Value

Arguments

References

See Also

Examples