dfourier_shape

Calculates shapes based on 'Discrete cosine transforms' given harmonic coefficients
(see dfourier) or can generate some random 'dfourier' shapes.
Mainly intended to generate shapes and/or to understand how dfourier works.

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

dfourier_shape function

<dl><dt>A</dt>
<dd>vector of harmonic coefficients</dd>
<dt>B</dt>
<dd>vector of harmonic coefficients</dd>
<dt>nb.h</dt>
<dd>if <code>A</code> and/or <code>B</code> are not provided,
the number of harmonics to generate</dd>
<dt>nb.pts</dt>
<dd>if <code>A</code> and/or <code>B</code> are not provided,
the number of points to use to reconstruct the shapes</dd>
<dt>alpha</dt>
<dd>The power coefficient associated with the (usually decreasing)
amplitude of the harmonic coefficients (see efourier_shape)</dd>
<dt>plot</dt>
<dd>logical whether to plot the shape</dd></dl>

Arguments

Calculates and draws 'dfourier' shapes — dfourier_shape

<dl>

<dt>A</dt>
<dd>vector of harmonic coefficients</dd>


<dt>B</dt>
<dd>vector of harmonic coefficients</dd>


<dt>nb.h</dt>
<dd>if <code>A</code> and/or <code>B</code> are not provided,
the number of harmonics to generate</dd>


<dt>nb.pts</dt>
<dd>if <code>A</code> and/or <code>B</code> are not provided,
the number of points to use to reconstruct the shapes</dd>


<dt>alpha</dt>
<dd>The power coefficient associated with the (usually decreasing)
amplitude of the harmonic coefficients (see efourier_shape)</dd>


<dt>plot</dt>
<dd>logical whether to plot the shape</dd>

</dl>

dfourier_shape: Calculates and draws 'dfourier' shapes

Description

Usage

Value

Arguments

See Also

Examples