grav2 <- read_cross2(system.file("extdata", "grav2.zip", package="qtl2"))
markers2drop <- c("BH.342C/347L-Col", "GH.94L", "EG.357C/359L-Col", "CD.245L", "ANL2")
grav2_rev <- pull_markers(grav2, markers2drop)
Run the code above in your browser using DataLab