original code : https://github.com/whitehead/plaac
usage example : python plaac.py -i four_classic_prions.fasta --plotDir plot
usage example : python plaac.py -i four_classic_prions.fasta --oneLine
original code : https://github.com/whitehead/plaac
usage example : python plaac.py -i four_classic_prions.fasta --plotDir plot
usage example : python plaac.py -i four_classic_prions.fasta --oneLine