tr.cont.scale

This function standardizes continuous traits. It can be useful before
computing functional space. You will have to choose which standardized
method to use based on your data. For this function to work, there must be
no NA in your <code>sp_tr</code> data frame.

Computing functional traits-based distances between pairs of
species for species gathered in assemblages allowing to build several
functional spaces. The package allows to compute functional diversity
indices assessing the distribution of species (and of their dominance) in a
given functional space for each assemblage and the overlap between
assemblages in a given functional space, see: Chao et al. (2018)
<doi:10.1002/ecm.1343>, Maire et al. (2015) <doi:10.1111/geb.12299>,
Mouillot et al. (2013) <doi:10.1016/j.tree.2012.10.004>, Mouillot et al.
(2014) <doi:10.1073/pnas.1317625111>, Ricotta and Szeidl (2009)
<doi:10.1016/j.tpb.2009.10.001>. Graphical outputs are included.
Visit the 'mFD' website for more information, documentation and examples.

Camille Magneville

Compute and Illustrate the Multiple Facets of Functional
Diversity

Nicolas Loiseau

Camille Albouy

Nicolas Casajus

Thomas Claverie

Arthur Escalas

Fabien Leprieur

Eva Maire

David Mouillot

Sebastien Villeger

tr.cont.scale function

<dl><dt>sp_tr</dt>
<dd>a data frame of traits values (columns) for each species
(rows). Note that species names must be specified in the row names and
traits must be continuous.</dd>
<dt>std_method</dt>
<dd>a character string referring to the standardization
method. Possible values:
<code>range</code> (standardize by the range),
<code>center</code> (use the center transformation: \(x' = x - mean(x)\)),
<code>scale</code> (use the scale transformation: \(x' = \frac{x}{sd(x)}\)), or
<code>scale_center</code> (use the scale-center transformation:
\(x' = \frac{x - mean(x)}{sd(x)}\)).
Default is <code>scale_center</code>.</dd></dl>

Arguments

Camille Magneville and Sebastien Villeger

Author

Scale continuous traits — tr.cont.scale

<dl>

<dt>sp_tr</dt>
<dd>a data frame of traits values (columns) for each species
(rows). Note that species names must be specified in the row names and
traits must be continuous.</dd>


<dt>std_method</dt>
<dd>a character string referring to the standardization
method. Possible values:
<code>range</code> (standardize by the range),
<code>center</code> (use the center transformation: \(x' = x - mean(x)\)),
<code>scale</code> (use the scale transformation: \(x' = \frac{x}{sd(x)}\)), or
<code>scale_center</code> (use the scale-center transformation:
\(x' = \frac{x - mean(x)}{sd(x)}\)).
Default is <code>scale_center</code>.</dd>

</dl>

tr.cont.scale: Scale continuous traits

Description

Usage

Value

Arguments

Author

Examples