The data was simulated on a 2400 centimorgan (cM) chromosome of an F2 population from
a cross of two inbred lines. The three genotype of AA, Aa and aa were coded as
1, 0, -1, respectively. Each column corresponds to an even spaced d= 5cM genetic marker,
and each row represents a sample. The Haldane map function was assumed in the simulation,
such that correlation between markers having distance d is \(R = exp(-2d)\). Example of using this dataset for multiple QTL mapping is available in the EBglmnet Vignette.