R: Convert a table of marker positions to a map object.

table2map {qtl} | R Documentation

## Convert a table of marker positions to a map object.

### Description

Convert a data frame with marker positions to a map object.

### Usage

    table2map(tab)

### Arguments

`tab` | A data frame with two columns: chromosome and position. The row names are the marker names.

### Value

A `map` object: a list whose components (corresponding to chromosomes) are vectors of marker positions.

### Author(s)

Karl W Broman, kbroman@biostat.wisc.edu

### See Also

`map2table`, `pull.map`, `est.map`

### Examples

    tab <- data.frame(chr=c(1,1,1,1,2,2,2,2,3,3,3,3),
                      pos=c(0,2,4,8,0,2,4,8,0,2,4,8))
    rownames(tab) <- paste0("marker", 1:nrow(tab))

    map <- table2map(tab)

[Package qtl version 1.41-6 Index]