qtl (version 1.66)

nullmarkers: Identify markers without any genotype data

Description

Identify markers in a cross that have no genotype data.

Usage

nullmarkers(cross)

Value

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

Arguments

cross

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

Author

Karl W Broman,

See Also

drop.nullmarkers

Examples

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

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