R: Find flanking markers for a specified position

find.flanking {qtl} | R Documentation

## Find flanking markers for a specified position

### Description

Find the genetic markers flanking a specified position on a chromosome, as well as the marker that is closest to the specified position.

### Usage

    find.flanking(cross, chr, pos)

### Arguments

`cross` | An object of class `cross`. See `read.cross` for details.
`chr` | A vector of chromosome identifiers, or a single such.
`pos` | A vector of cM positions.

### Value

A data.frame, each row corresponding to one of the input positions. The first column contains the left-flanking markers, the second column contains the right-flanking markers, and the third column contains the markers closest to the specified positions.

### Author(s)

Brian Yandell

### See Also

`find.marker`, `plotPXG`, `find.markerpos`, `find.pseudomarker`

### Examples

    data(listeria)
    find.flanking(listeria, 5, 28)
    find.flanking(listeria, c(1, 5, 13), c(81, 28, 26))

[Package qtl version 1.41-6 Index]