There is a variable df. Its values are:
55 -316 148 -126 109 -168 41 -333 85 -123 70 -11 35 -97 190 -104 42 -136 144 -22 194 -64 23 -669 How to separate this one variable into two different, in one - positive values, in another negative? The order of numbers must be preserved.