[Solved] frequency of letters at position in string [closed]

by

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For the record, for

x = "TGAGGTAGTAGTTTGTGCTGTTAT
TAGTAGTTTGTGCTGTTA
TGAGGTAGTAGTTTGTAC
TGAGAACTGAATTCCATAGG"

a Biostrings solution is

library(Biostrings)
consensusMatrix(DNAStringSet(strsplit(x, "\n")[[1]]))

which will be fast for millions of sequences.

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solved frequency of letters at position in string [closed]