Try:
networkdays <- function(start, end, holidays)
{
dates <- seq(as.Date(start), as.Date(end), by="day")
if(missing(holidays))holidays <- 0 else holidays <- length(holidays)
sum(as.numeric(format(dates, "%w") > 1)) - holidays
}
networkdays("2008-04-01", "2008-04-30")
networkdays("2008-04-01", "2008-04-30", "2008-04-21")
On Thu, Apr 10, 2008 at 5:54 PM, tom soyer <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Does anyone know if R has a built-in function that is similar to Excel's
> NETWORKDAYS function? i.e., Returns the number of whole working days
> between
> two dates. Working days exclude weekends.
>
> Thanks,
>
> --
> Tom
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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>
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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