[R] (no subject)
Jim Lemon
drjimlemon at gmail.com
Wed Jan 20 23:59:26 CET 2016
Hi Maryam,
c(Young.list1[sample(1:20,5),],
Young.list2[sample(1:20,5),],
Young.list3[sample(1:20,5),])
# or for a more general solution
nrows<-dim(Young.list1)[1]
c(Young.list1[sample(1:nrows,nrows/4),],
Young.list2[sample(1:nrows,nrows/4),],
Young.list3[sample(1:nrows,nrows/4),])
Jim
On Wed, Jan 20, 2016 at 9:03 PM, maryam firoozi <
firoozi_maryam6858 at yahoo.com> wrote:
> thanks for repling.can you help me how to select randomely 25% from three
> mattix and put it in a vector.
>
>
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