Displaying 1 result from an estimated 1 matches for "chrnum".
2010 May 20
5
sort a data.frame
Hello,
I have a dataframe:
dd <- data.frame(b = c("chr2", "chr1", "chr15", "chr13"),
x = c("A", "D", "A", "C"), y = c(8, 3, 9, 9),
z = c(1, 1, 1, 2))
>dd
b x y z
1 chr2 A 8 1
2 chr1 D 3 1
3 chr15 A 9 1
4 chr13 C 9 2
Now I want to sort them according column "b", but only its