R: Identify markers without any genotype data

nullmarkers {qtl} | R Documentation

## Identify markers without any genotype data

### Description

Identify markers in a cross that have no genotype data.

### Usage

    nullmarkers(cross)

### Arguments

`cross` | An object of class `cross`. See `read.cross` for details.

### Value

Marker names (a vector of character strings) with no genotype data.

### Author(s)

Karl W Broman, kbroman@biostat.wisc.edu

### See Also

`drop.nullmarkers`

### Examples

    # one marker with no data
    data(hyper)
    nullmarkers(hyper)

    # nothing in listeria
    data(listeria)
    nullmarkers(listeria)

[Package qtl version 1.41-6 Index]