Generate unique random integer

[Omar Okasha]

Dear experts,

I have a numeric identifier which is missing in observations that have no positive laboratory results..I encoded the variable and its largest value is 3999, the total sample size is just over 10000

I need to use that variable to reshape my data from long to wide, thus I need to assign random values to its missing part,

the problem is when I use the following line, I get many duplicates:

replace identifier= floor((14000-4000+1)*runiform() + 4000) if identifier==.

I am struggling to create a unique random integer using the following command

Any help is greatly appreciated

Omar

[Nick Cox]

Duplicate post. If interested please follow http://www.statalist.org/forums/foru...random-integer

[Omar Okasha]

Sorry Nick, did not know how to delete it