search for: threrefore

Dear R experts, Is it true that R generally cannot handle medium sized data sets(a couple of hundreds of thousands observations) and threrefore large date set(couple of millions of observations)? I googled and I found lots of questions regarding this issue, but curiously there were no straightforward answers what can be done to make R capable of handling data. Is there sth inherent in the structure of R that makes it impossible to work w...

...#a function to multiplicate two collumns and two elements at a time } for (q in 1:4){ m <- soma qw [q, 2] <- m (d, q) } answer <- sum (qw [, 2]) However I am doing this to generate a X'X matrix (since I can?t do t(X)$*$X because i would like to include a conditional in the formula. Threrefore this script above is not good to me) Could anybody help me? Thanks in advance -- View this message in context: http://www.nabble.com/Sum-of-Product-in-a-Matrix-tp25530977p25530977.html Sent from the R help mailing list archive at Nabble.com.