Nothing
uco <- function (seq, frame = 0, index = c("eff", "freq", "rscu"),
as.data.frame = FALSE, NA.rscu = NA)
{
choice <- match.arg(index)
if(any(seq%in%LETTERS)){
seq <- tolower(seq)
}
sequence <- splitseq(seq = seq, frame = frame, word = 3)
if( as.data.frame == FALSE ) {
eff <- table(factor(sequence, levels = SEQINR.UTIL$CODON.AA$CODON))
if(choice == "eff") return(eff)
freq <- eff/(floor(length(seq)/3))
if(choice == "freq") return(freq)
T <- split(freq, SEQINR.UTIL$CODON.AA$AA)
rscu <- lapply(T, function(x) {
return(x/((1/length(x)) * sum(x)))
})
names(rscu) <- NULL
rscu <- unlist(rscu)[as.character(SEQINR.UTIL$CODON.AA$CODON)]
is.na(rscu[!is.finite(rscu)]) <- TRUE
rscu[is.na(rscu)] <- NA.rscu
return(rscu)
} else { # return all indices in a data.frame
eff <- table(factor(sequence, levels = SEQINR.UTIL$CODON.AA$CODON))
freq <- eff/(floor(length(seq)/3))
T <- split(freq, SEQINR.UTIL$CODON.AA$AA)
rscu <- lapply(T, function(x) {
return(x/((1/length(x)) * sum(x)))
})
names(rscu) <- NULL
rscu <- unlist(rscu)[as.character(SEQINR.UTIL$CODON.AA$CODON)]
is.na(rscu[!is.finite(rscu)]) <- TRUE
rscu[is.na(rscu)] <- NA.rscu
df <- data.frame(SEQINR.UTIL$CODON.AA$AA, eff = eff, freq = as.vector(freq), RSCU = rscu)
names(df) = c("AA", "codon", "eff", "freq", "RSCU")
return(df)
}
}
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