qtl (version 1.39-5)

nchr: Determine the number of chromosomes

Description

Determine the number of chromosomes in a cross or map object.

Usage

nchr(object)

Arguments

object

An object of class cross (see read.cross for details) or map (see sim.map for details).

Value

The number of chromosomes in the input.

See Also

read.cross, plot.cross, summary.cross, nind, totmar, nmar, nphe

Examples

data(fake.f2)
nchr(fake.f2)
map <- pull.map(fake.f2)
nchr(map)