Helper function to add species names to headers within fasta files

Reads a fasta file and adds the defined species name to each header entry of the input fasta file.

rename.fasta(file, species, output = "renamed_fasta.fa", append = FALSE)

Arguments

file	input fasta file.
species	a character string specifying the species name to be added to the headers. Format will be: `species_`, where stands for the original header.
output	a character string denoting the name of the renamed output fasta file.
append	logical value. If `TRUE` output will be appended to file; otherwise, it will overwrite the contents of file.

Writes a new fasta file with renamed headers.

Hajk-Georg Drost