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Pull out a specified set of chromosomes from a map object.
map
# S3 method for map subset(x, …) # S3 method for map [(x, …)
A list whose components are vectors of marker locations.
Vector of chromosome indices.
The input map object, but with only the specified subset of chromosomes.
subset.cross
# NOT RUN { data(map10) map10 <- subset(map10, chr=1:5) # you can also use brackets map10 <- map10[2:3] # }
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