Many thanks to those who have answered my question. Could I ask Gabor and Peter the meaning of:
> sum(sapply(ttt,function(f) f(x))) I gather that a "mysterious" function f(x) is applied to all components of ttt, and sum can act on this modified object. But what is exactly f? And how does the list object change? Cheers, J -- Dr James Foadi Department of Physics University of York York YO10 5DD email: [EMAIL PROTECTED] web page: http://www-users.york.ac.uk/~jf117 Tel: 0044 1904 434622 Mobile: 0044 7740 678548 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
