[R] Competing with SPSS and SAS: improving code that loops throughrows (data manipulation)
chuck at sharpsteen.net
Sat Mar 27 22:50:36 CET 2010
hadley wickham wrote:
>> exp1^(a[case] * l * 10)
>> would be better written out of the loop as
>> b <- exp1^(a * l * 10)
> And even better as
> b <- exp(a * l * 10)
Aye, exp() functions tend to be heavily optimized compared to general
functions such as `^` even if e is used as the base of the exponent.
Undergraduate-- Environmental Resources Engineering
Humboldt State University
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