saving group means in data file 2

[Achaz von Hardenberg <achaz@hermes.usherb.ca>]

To my previous msg, I should add that I am using S-Plus 2000.
Sorry for the double posting.

regards,
achaz


Hi,
I have a large dataset with a grouping variable with many groups. I would 
like to estimate means and s.e. for each group and save them in a new 
datafile  (rather than printing them in a report file). anybody knows the 
trick how to do it?
Thank you for your help,

achaz