Hi everyone! I'm trying to teach myself R in order to do some data analysis. I'm a mathematics student and (only) familiar with matlab and latex. I'm working trough the "official" introduction to R at the moment, while simultaneously solving some exercises I found in the web. Before I post my (probably stupid) question, I'd like to ask you for some general advice. How do you work with R? Is it like in matlab, that you write your functions with a lot of loops etc. in a textfile and then run it? Or do you just prepare your data and then use the functions provided by R (plot, mean etc) to get some analysis? I'd be very thankfull for some of your thoughts about "approaches".
Now the question: I'm trying to build a vector with n entries, each consisting of the mean of m random numbers (exponential distributed for example). My approach was to construct a nxm random matrix and then to somehow take the mean of each row. But in the mean function there is no parameter to do this, so the intended approach of R is probably different.. any ideas? =) Richard -- View this message in context: http://r.789695.n4.nabble.com/calculating-the-mean-of-a-random-matrix-by-row-and-some-general-questions-tp3678964p3678964.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.
