[R] group length

[Jeffrey Dick]

On Thu, May 12, 2011 at 10:00 AM, Ledon, Alain <Alain.Ledon at ally.com> wrote:
> sapply...
>
>> y1=c(1.214,1.180,1.199)
>> y2=c(1.614,1.710,1.867,1.479)
>> y3=c(1.361,1.270,1.375,1.299)
>> y4=c(1.459,1.335)
>> sapply(list(y1,y2,y3,y4), length)
> [1] 3 4 4 2
>

Or, if you don't want to name each object individually:

> sapply(mget(paste("y",1:4,sep=""),sys.frame()),length)
y1 y2 y3 y4
 3  4  4  2