base.freq: Base frequencies from DNA Sequences
Description
This function computes the relative frequencies (i.e. percentages) of
the four DNA bases (adenine, cytosine, guanine, and thymidine) from a
sample of sequences.Value
A table of relative frequencies with the names "a"
, "c"
,
"g"
, and "t"
.Details
The base frequencies are computed over all sequences in the
sample. All missing or unknown sites are discarded from the
computations.