[R] Summary of variations in how long commands take

From: David Kane a296180@mica.fmr.com)
Date: Wed 18 Jul 2001 - 05:30:58 EST

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Message-id: <15188.37490.166487.72961@gargle.gargle.HOWL>

Thanks to Guido Masarotto, Brain Ripley and Andy Liaw for (remarkably) quick
answers to my (stupid!) question. As all three noted, I should be using
system.time() instead of proc.time().

Andy also noted that he used constructions like:

my.f <- function(x) {
start <- proc.time()
[some steps]
now <- proc.time()
cat("first step took ",now-start," seconds.\n")
etc.
}

to examine timing within a given function.

Thanks again for a marvelous program.

Regards,

Dave Kane
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