Dummy variables with a range

[Conrad Taylor]

Hello everyone,

I need to create a dummy variable for industry production for when the cycle is in bust and boom and I'm having a brain fart.

for example i created

generate DUM1990 = 0
replace DUM1990 = 1 if (Month>tm(1990m6) & Month<tm(1991m3))

But if specify the dummy variable to be for month it wont have an effect on my variable Industry production or will it?

If it doesn't how do i specify that my variable industry production takes the values of 1 between those dates and a value of 0 for all other dates?

[Nick Cox]

I don't follow what the question is here. This illustrates a direct way to get an indicator or dummy variable that is 1 in an interval and 0 outside it. Your code looks equivalent.

clear
set obs 24 
gen Month = tm(1989m12) + _n
format Month %tm 

* you start here 
gen Dummy = inrange(Month, tm(1990m7), tm(1991m2))

list, sep(12)

    +-----------------+
     |   Month   Dummy |
     |-----------------|
  1. |  1990m1       0 |
  2. |  1990m2       0 |
  3. |  1990m3       0 |
  4. |  1990m4       0 |
  5. |  1990m5       0 |
  6. |  1990m6       0 |
  7. |  1990m7       1 |
  8. |  1990m8       1 |
  9. |  1990m9       1 |
 10. | 1990m10       1 |
 11. | 1990m11       1 |
 12. | 1990m12       1 |
     |-----------------|
 13. |  1991m1       1 |
 14. |  1991m2       1 |
 15. |  1991m3       0 |
 16. |  1991m4       0 |
 17. |  1991m5       0 |
 18. |  1991m6       0 |
 19. |  1991m7       0 |
 20. |  1991m8       0 |
 21. |  1991m9       0 |
 22. | 1991m10       0 |
 23. | 1991m11       0 |
 24. | 1991m12       0 |
     +-----------------+