Skip to content
Prev 219950 / 398500 Next
Original Raw

Any way to apply TWO functions with tapply()?

Phil Wieland 
I need to compute the mean and the standard deviation of a data set and would
like to have the results in one table/data frame. I call tapply() two times
and do then merge the resulting tables to have them all in one table. Is
there any way to tell tapply() to use the functions mean and sd within one
function call? Something like tapply(data$response, list(data$targets,
data$conditions), c(mean, sd)).

Thanks in advance.

Thread (8 messages)

Phil Wieland Any way to apply TWO functions with tapply()? May 7 Tal Galili Any way to apply TWO functions with tapply()? May 7 Fredrik Karlsson Any way to apply TWO functions with tapply()? May 7 Gabor Grothendieck Any way to apply TWO functions with tapply()? May 7 David Winsemius Any way to apply TWO functions with tapply()? May 7 Gabor Grothendieck Any way to apply TWO functions with tapply()? May 7 Gabor Grothendieck Any way to apply TWO functions with tapply()? May 7 Hadley Wickham Any way to apply TWO functions with tapply()? May 7