search for: 361630

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2011 Mar 17
1
calculating the occurrences of distinct observations in the subsets of a dataframe
Hello everybody, I have a data frame in R which is similar to the follows. Actually my real 'df' dataframe is much bigger than this one here but I really do not want to confuse anybody so that is why I try to simplify things as much as possible. So here's the data frame. id <-c(1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3) a
2006 Dec 19
1
Sloooooow pop3 downloads
...LLHUP|POLLNVAL}, {fd=18, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=29, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=20, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=16, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}], 17, 0) = 0 14:18:09.361604 gettimeofday({1165868289, 361630}, {360, 0}) = 0 14:18:09.361731 waitpid(-1, 0xbf9686a8, WNOHANG) = 0 14:18:09.361822 gettimeofday({1165868289, 361848}, NULL) = 0 14:18:09.361947 poll([{fd=10, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=15, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=13, events=POLLIN|POLLPRI|...