snp.names {GenABEL} | R Documentation |
Based on boundary conditions specified and (or) chromosome selects SNP names in the region
snp.names(data, begin, end, chromosome)
data |
object of class gwaa.data-class , snp.data-class ,
scan.gwaa-class or check.marker-class |
begin |
Start position (or name of the first SNP) |
end |
End-position or name of last SNP |
chromosome |
Chromosome code |
Any of the arguments, except the data
can be missing
A vector of names of SNPs located in the region
Yurii Aulchenko
data(srdta) snp.names(srdta, begin = 50000, end = 100000) snp.names(srdta, begin = 50000, end = 100000, chromosome = "1") # does not make sense with these data: snp.names(srdta, begin = 50000, end = 100000, chromosome = "X") # again makes sense: snp.names(srdta, end = 100000) snp.names(srdta, begin = 2200000) # show summary for SNPs in region between 50,000 and 100,000 a <- snp.names(srdta, begin = 50000, end = 100000) summary(srdta@gtdata[,a])