utils.recalc.freqhomsnp

-- name of the genlight object containing the SNP data [required]

-- verbosity: 0, silent or fatal errors; 1, begin and end; 2, progress log ; 3, progress and results summary; 5, full report [default 2]

The locus metadata supplied by DArT has FreqHomSnp included,
but the frequency of the homozygous alternate will change when some individuals are removed from the dataset. 
This script recalculates the FreqHomSnp and places these recalculated values in the appropriate place in the genlight object.
Note that the frequency of the homozygote alternate SNPS is calculated from the individuals that could be scored.

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, once SNP or related fragment
presence/absence data from any source is imported into a genlight object many
of the functions can be used. Functions are available for input and output of
SNP and silicodart data, for reporting on and filtering on various criteria
(e.g. CallRate, Heterozygosity, Reproducibility, maximum allele frequency).
Advanced filtering is based on Linkage Disequilibrium and HWE (Hardy-Weinberg equilibrium). Other functions
are available for visualization after PCoA (Principle Coordinate Analysis), or to facilitate transfer of data
between genlight/genind objects and newhybrids, related, phylip, structure, faststructure packages.

Bernd Gruber

dartR

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

Arthur Georges

Peter J. Unmack

Lindsay V. Clark

Oliver Berry

utils.recalc.freqhomsnp function

A utility script to recalculate the the frequency of the homozygous alternate SNP by locus after some populations have been deleted — utils.recalc.freqhomsnp

utils.recalc.freqhomsnp: A utility script to recalculate the the frequency of the homozygous alternate SNP by locus after some populations have been deleted

Description

Usage

Arguments

Value

Examples