search for: greaterof

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2007 Feb 08
2
Timings of function execution in R [was Re: R in Industry]
...s (can have enormous effects) > - use function instead of expression > - use compiled code > - I guess indexing with numbers (better variables) is also much faster than with text (names) (see also above) > - I even made, for example, my own min, max, since they are slow, e.g., > > greaterOf <- function(x, y){ > # Returns for each element of x and y (numeric) > # x or y may be a multiple of the other > z <- x > y > z*x + (!z)*y That's an interesting function. I initially was tempted to respond that you have managed to reinvent a specialized form of the if...