Convert data from long format to wide format with multiple measure columns

Question

I am having trouble figuring out the most elegant and flexible way to switch data from long format to wide format when I have more than one measure variable I want to bring

Answer 1

   reshape(my.df,
           idvar = "ID",
           timevar = "TIME",
           direction = "wide")

gives

  ID X.1 Y.1 X.2 Y.2 X.3 Y.3 X.4 Y.4 X.5 Y.5
1  A   1  16   4  19   7  22  10  25  13  28
2  B   2  17   5  20   8  23  11  26  14  29
3  C   3  18   6  21   9  24  12  27  15  30