Gundala
f <- function(n){expand.grid(rep(list(seq_len(4)),n))}
HTH
Robin
Gundala Viswanath wrote:
Dear all,
Is there an efficient way in R to construct all strings from 4 bases (ATCG).
If we want a length L string, there are 4 ^ L possible strings of such.
e . g with L = 2 we have AA, AT, AC, AG, .. GC, GA, GT, GG as many as
4 ^ 2 = 16 strings,
with L = 3 we have as many as 4 ^ 3 = 64 strings
- Gundala Viswanath
Jakarta - Indonesia
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--
Robin K. S. Hankin
Uncertainty Analyst
University of Cambridge
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Cambridge CB3 9EP
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