R: Internal: compares two pairs of alleles

allelepaircomp {prabclus} | R Documentation

## Internal: compares two pairs of alleles

### Description

Used for computation of the genetic distances `alleledist`.

### Usage

      allelepaircomp(allelepair1,allelepair2,method="sum")

### Arguments

`allelepair1` | vector of two allele codes (usually characters), or `NA`.
`allelepair2` | vector of two allele codes (usually characters), or `NA`.
`method` | one of `"sum"` or `"geometrical"`.

### Value

If `method=="sum"`, number of shared alleles (0, 1 or 2), or `NA`. If `method=="geometrical"`, 0, 0.5, `sqrt(0.5)` (in case that one of the allelepairs is double such as in `c("A","B"),c("A","A")`) or 1, or `NA`.

### Author(s)

Christian Hennig chrish@stats.ucl.ac.uk http://www.homepages.ucl.ac.uk/~ucakche

### See Also

`alleledist`

### Examples

      allelepaircomp(c("A","B"),c("A","C"))

[Package prabclus version 2.2-6 Index]