The Repeat() function makes copies of its first argument into a result. The second (and sometimes a third) argument is the number of repeats, where 1 means a single copy.
If the first argument evaluates to a character value or list, the result is that many copies.
Repeat( "abc", 2 );
"abcabc"
Repeat( {"A"}, 2 );
{"A","A"}
Repeat( {1, 2, 3}, 2 );
{1,2,3,1,2,3}
If the first argument evaluates to a number or matrix, the result is a matrix. The second argument is the number of row repeats, and a third argument can specify the number of column repeats. If only two arguments are specified, the number of column repeats is 1.
Repeat( [1 2, 3 4], 2, 3 );
[ 1 2 1 2 1 2,
3 4 3 4 3 4,
1 2 1 2 1 2,
3 4 3 4 3 4]
Repeat( 9, 2, 3 );
[ 9 9 9,
9 9 9]
The repeat function is compatible with the function of the same name in the SAS/IML language, but is incompatible with the SAS character DATA step function, which repeats one more time than this function.