Sir,  I would like to use PCA for a set of FASTA formatted 1400 sequences (in a single file).I have stored all fasta formatted sequences in a text file. If there is any problem for it, you can help me in doing the corresponding analysis using R. I am herewith giving a weblink for R, which uses the frozen database for correspondence analysis for three organisms(Leishamnia major, Trypanosoma brucei and Trypanosoma cruzi) .Instead, I want to use my above dataset (sequences) of a organisms for same purpose. For this R code needs to be edited and I do not know how to do that.Could you please help me either way for this analysis work.   Weblink: http://pbil.univ-lyon1.fr/datasets/charif04/    Thanking you Kinshuk Chandra Nayak Institute of Life Sciences Department of Biotechnology, Bhubaneswar-751023, India