R: Convert a sex-specific map to a sex-averaged one

convert2sa {qtl} | R Documentation

## Convert a sex-specific map to a sex-averaged one

### Description

Convert a sex-specific map to a sex-averaged one, assuming that the female and male maps are actually the same (that is, that the map was estimated assuming a common recombination rate in females and males).

### Usage

    convert2sa(map, tol=1e-4)

### Arguments

`map` | A map object with sex-specific locations (but assuming that the female and male maps are the same), as output by the function `est.map` for a 4-way cross, with argument `sex.sp=FALSE`.
`tol` | Tolerance value for inspecting the differences between the female and male maps; if they differ by more than this tolerance, a warning is issued.

### Details

We pull out just the female marker locations, and give a warning if there are large differences between the female and male maps.

### Value

A map object, with sex-averaged distances.

### Author(s)

Karl W Broman, kbroman@biostat.wisc.edu

### See Also

`est.map`, `plotMap`

### Examples

    data(fake.4way)
    ## Not run: fake.4way <- subset(fake.4way, chr="-X")

    nm <- est.map(fake.4way, sex.sp=FALSE)
    plot(convert2sa(nm))

[Package qtl version 1.41-6 Index]