Repeat by variable

[KPatra]

I have two matrices H and K

H = 1 2 3

K = 10 20

I woulde like to repeat K for each value of H - any suggestions? The expected result will look like

1     10

1     20

2     10

2     20

3     10

3     20

[Rick_SAS]

Use the EXPANDGRID function.

[KPatra]

Thanks Rick, I have IML 12.1 and it does not have that function.

[Rick_SAS · Accepted solution]

For a 2D grid, use this module, which is adapted from the article "How to create a grid of values"

start ExpandGrid(_x1, _x2);

   x1 = colvec(_x1);  Nx = nrow(x1);

   x2 = rowvec(_x2);  Ny = ncol(x2);

   X = repeat(x1, 1, Ny);

   Y = repeat(x2, Nx);

   return ( colvec(X) || colvec(Y) );

finish;

[KPatra]

Works like a charm, thanks Rick.