gl.filter.heterozygosity

Calculates the observed heterozygosity for each individual in a genlight
object and filters individuals based on specified threshold values.
Use gl.report.heterozygosity to determine the appropriate thresholds.

Functions are provided that facilitate the import and analysis of
'SNP' (single nucleotide polymorphism) and 'silicodart' (presence/absence) data.
The main focus is on data generated by 'DarT' (Diversity Arrays Technology),
however, data from other sequencing platforms can be used once 'SNP' or related
fragment presence/absence data from any source is imported. Genetic datasets
are stored in a derived 'genlight' format (package 'adegenet'), that allows for
a very compact storage of data and metadata. Functions are available for
importing and exporting of 'SNP' and 'silicodart' data, for reporting on and
filtering on various criteria (e.g. 'CallRate', heterozygosity, reproducibility,
maximum allele frequency). Additional functions are available for visualization
(e.g. Principle Coordinate Analysis) and creating a spatial representation
using maps. 'dartR' supports also the analysis of 3rd party software package
such as 'newhybrid', 'structure', 'NeEstimator' and 'blast'. Since version
2.0.3 we also implemented simulation functions, that allow to forward simulate
'SNP' dynamics under different population and evolutionary dynamics.
Comprehensive tutorials and support can be found at our 'github' repository:
github.com/green-striped-gecko/dartR/. If you want to cite 'dartR', you find
the information by typing citation('dartR') in the console.

Bernd Gruber

dartR

Importing and Analysing 'SNP' and 'Silicodart' Data Generated by
Genome-Wide Restriction Fragment Analysis

Arthur Georges

Jose L. Mijangos

Carlo Pacioni

Peter J. Unmack

Oliver Berry

Lindsay V. Clark

Floriaan Devloo-Delva

Eric Archer

gl.filter.heterozygosity function

<dl><dt>x</dt>
<dd>A genlight object containing the SNP genotypes [required].</dd>
<dt>t.upper</dt>
<dd>Filter individuals &gt; the threshold [default 0.7].</dd>
<dt>t.lower</dt>
<dd>Filter individuals &lt; the threshold [default 0].</dd>
<dt>verbose</dt>
<dd>Verbosity: 0, silent or fatal errors; 1, begin and end; 2,
progress log; 3, progress and results summary; 5, full report
[default 2, unless specified using gl.set.verbosity].</dd></dl>

Arguments

Custodian: Luis Mijangos -- Post to
<a href="https://groups.google.com/d/forum/dartr">https://groups.google.com/d/forum/dartr</a>

Author

Filters individuals with average heterozygosity greater than a
 specified upper threshold or less than a specified lower threshold — gl.filter.heterozygosity

<dl>

<dt>x</dt>
<dd>A genlight object containing the SNP genotypes [required].</dd>


<dt>t.upper</dt>
<dd>Filter individuals &gt; the threshold [default 0.7].</dd>


<dt>t.lower</dt>
<dd>Filter individuals &lt; the threshold [default 0].</dd>


<dt>verbose</dt>
<dd>Verbosity: 0, silent or fatal errors; 1, begin and end; 2,
progress log; 3, progress and results summary; 5, full report
[default 2, unless specified using gl.set.verbosity].</dd>

</dl>

Custodian: Luis Mijangos -- Post to
<a href='https://groups.google.com/d/forum/dartr'>https://groups.google.com/d/forum/dartr</a>

gl.filter.heterozygosity: Filters individuals with average heterozygosity greater than a specified upper threshold or less than a specified lower threshold

Description

Usage

Value

Arguments

Author

See Also

Examples