Hello,
Please help me with this one:
I have a database:
Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input str1 code byte group
"a" 1
"b" 1
"c" 1
"d" 1
"b" 1
"f" 1
"a" 1
"c" 1
"c" 1
"a" 2
"c" 2
"e" 2
"h" 2
"j" 2
"j" 2
end
"code" is a code and "group" is a grouping variable.
What I want is a list of codes that appears only in group 1, but not in both groups or just in group 2 (unique values, number of occurrences doesn't matter), i.e. b, d, f
Thank you very much!
Best regards,
Cristian