Replicating Matricies...

Chris Moyer (moyerc@ccmail.orst.edu)
Fri, 16 Jan 1998 13:36:32 -0800

Does anyone know how to replicate every other line in a matrix in
Splus 4 without using a for() loop, e.g.,

from:

x1 x2 x3
1 1 10 15
2 2 11 16
3 3 12 17
4 4 13 18
5 5 14 19
.
.
.

to:

x1 x2 x3
1 1 10 15
2 2 11 16
3 2 11 16
4 3 12 17
5 4 13 18
6 4 13 18
7 5 14 19
.
.
.

I know there must be a simple solution, but my novice skills are
holding me back.

Thanks for help in advance.

Chris Moyer