[R] summary(difftime(...))

Jim Lemon bitwrit at ozemail.com.au
Thu Apr 15 14:50:19 CEST 2004

I M S White wrote:
> Is there any way to get a numerical summary of the values of a difftime
> object? E.g.
> TimeToWean <- difftime(WeanDate, BirthDate, units = "days")
> I can repeat
> sum(TimeToWean == 20)
> with as many other values are needed to build up a frequency table,
> but is there a simpler way in R version 1.8.1?
perhaps tabulate() will do what you want. For a somewhat more expansive 
output, you might look at the freq() function in "Kickstarting R" which can 
be browsed online at:


see the section "Frequencies".


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