Dear statalist,
I am trying to construct a binary variable.
This binary variable should take the value of 0 if the variable (TA hereafter) is inferior to zero more thant 3 years. Each TAN_X value correspond to a different year.
I think I should use the command count but I dont know how .
Does anyone know which code to use to do that ?
Thanks a lot
Najiba

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input byte(company TAN_1 TAN_2 TAN_3 TAN_4 TAN_5)
1 -1  2 -3  2  2
2 -1 -2 -3 -5 -6
3 -4 -4 -4  5  5
4  3  3 -2  2  2
end