[R] How to repeat vectors ?

[Tong Wang]

Hi,
    If I have a matrix  , say       a11   a12
                                                   a21  a22
    Is there a routine to get:      a11  a12
                                                     a11  a12
                                                     a21   a22
                                                     a21   a22

     Thanks a lot for any help.

best

______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.