On Mon, May 26, 2014 at 12:27 AM, rahmad akbar <matbioinfo at gmail.com> wrote: > thanks guys for the replies, > > Danny, your explanation helped alot, i'll have a go on Alan Gaud's > tutorial. super thanks You should probably thank Diliup Gabadamudalige instead; I just forwarded his message. Best of wishes to you!