mollusk

This data set gives the abundance of 32 mollusk species in 163 samples.
For each sample, 4 additional covariates are known.

datasets

The Poisson-lognormal model and variants (Chiquet, Mariadassou and Robin,
2021 <doi:10.3389/fevo.2021.588292>) can be used for
a variety of multivariate problems when count data are at play, including
principal component analysis for count data, discriminant analysis, model-based clustering and
network inference. Implements variational algorithms to fit such models accompanied with a set of
functions for visualization and diagnostic.

Julien Chiquet

PLNmodels

Poisson Lognormal Models

Mahendra Mariadassou

Stéphane Robin

Giovanni Poggiato

François Gindraud

mollusk function

A list with 2 two data frames:<dl>
<dt>Abundance</dt>
<dd>a 163 x 32 data frame of abundancies/counts (163 samples and 32 mollusk species)</dd><dt>Covariate</dt>
<dd>a 163 x 4 data frame of covariates:<dl>
<dt>site</dt>
<dd>a factor with 8 levels indicating the sampling site</dd></dl></dd><dt>season</dt>
<dd>a factor with 4 levels indicating the season</dd><dt>method</dt>
<dd>a factor with 2 levels for the method of sampling - wood or string</dd><dt>duration</dt>
<dd>a numeric with 3 levels for the time of exposure in week</dd>
</dl>

In order to prepare the data for using formula in multivariate analysis (multiple outputs and inputs), use <code>prepare_data()</code>.
Original data set has been extracted from ade4.

Format

Mollusk data set — mollusk

A list with 2 two data frames:<dl>
<dt>Abundance</dt>
<dd>a 163 x 32 data frame of abundancies/counts (163 samples and 32 mollusk species)</dd>

<dt>Covariate</dt>
<dd>a 163 x 4 data frame of covariates:<dl>
<dt>site</dt>
<dd>a factor with 8 levels indicating the sampling site</dd>

<dt>season</dt>
<dd>a factor with 4 levels indicating the season</dd>

<dt>method</dt>
<dd>a factor with 2 levels for the method of sampling - wood or string</dd>

<dt>duration</dt>
<dd>a numeric with 3 levels for the time of exposure in week</dd>


</dl>
</dd>


</dl>

In order to prepare the data for using formula in multivariate analysis (multiple outputs and inputs), use <code>prepare_data()</code>.
Original data set has been extracted from ade4.

mollusk: Mollusk data set

Description

Usage

Arguments

Format

References

See Also

Examples