qtl (version 1.66)

addmarker: Add a marker to a cross

Description

Add a marker to a cross object.

Usage

addmarker(cross, genotypes, markername, chr, pos)

Value

The input cross object with the single marker added.

Arguments

cross

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

genotypes

Vector of numeric genotypes.

markername

Marker name as character string.

chr

Chromosome ID as character string.

pos

Position of marker, as numeric value.

Author

Karl W Broman,

Details

Use this function with caution. It would be best to incorporate new data into a single file to be imported with read.cross.

But if you have genotypes on one or two additional markers that you want to add, you might load them with read.csv and incorporate them with this function.

See Also

pull.markers, drop.markers

Examples

data(fake.f2)

# genotypes for new marker
gi <- pull.geno(fill.geno(fake.f2))[,"D5M197"]

# add marker to cross
fake.f2 <- addmarker(fake.f2, gi, "D5M197imp", "5", 11)