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