Returns the subset of the MSA which appears in the features object.
extract.feature.msa(x, features, do4d = FALSE, pointer.only = FALSE)
An object of type MSA
An object of type features
denoting the regions
of the alignment to extract.
If TRUE
, then some elements of features must have type "CDS", and only
fourfold-degenerate sites will be extracted.
If TRUE
, return only a pointer to an object
stored in C (useful for large alignments; advanced use only)
An msa object containing only the regions of x appearing in the features object.
sub.msa
, [.msa