I don't know anything about Kolmogorov-Smirnov p-values, but I tend to believe that R is usually fairly efficient. So I would tend to think that if this is "extraordinarily slow," then it is probably not used correctly. Just my 2 cents.

In reply to Re: Translation of R functions to Perl subroutines by Laurent_R
in thread Translation of R functions to Perl subroutines by hailholyghost

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