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2006 Mar 29
2
aggregate function....
Dear R users,
I have some trouble with the aggregate function. Here are my data
> daf
S_id AF_Class count... R_gc_percent S_length
5 8264497 1 30 0.48 35678
6 8264497 3 7 0.48 35678
8 8264554 1 31 0.51 38894
9 8264554 2 11 0.51 38894
10 8264554 3 1 0.51 38894
for a given...