// Supposed source data in column 1 of sheet1, book1
// and target matrix is the first matrix in mbook1, msheet1
range rw = [book1]sheet1!col(1);
range rm = [mbook1]msheet1!mat(1);

n = 3; // matrix row
m = 2; // matrix column

for(int ii = 1; ii <= n; ii++)
{
	for(int jj = 1; jj <= m; jj++)
	{
		rm[ii, jj] = rw[(ii-1)*m + jj];
	}
}