cut alignment

Commands in mothur
1

Hi, can anyone please tell me how to cut
my alignment to contain for example only
the 300 first nucleotides starting at a given
position? I have tried, screen.seqs and trim.seqs
without success.
Thanks for comments.
Sigmund

2

I think you are looking for http://www.mothur.org/wiki/Chop.seqs.

3

Yes, thanks - I see it now among the other “Commands”.
Sigmund