Dear all,
I came across a problem about missing value. For example:(var1 var2
var3 are categorical variables)
index var1 var 2 var3 var 4
1 . 1 1
2 1 1 .
3 . 1 1
Now I want to get the frequecy of each observation and generate a
variable var4 which is the sum of frequency. So when I run -gen
var4=var1+var2+var3-, I should have got 2,2,1. But I got three missing
value. I'd like to say this problem is quite typical for missing value
topic. I tried to find answer online. But no clue now. Does anybody
can help me? Thanks
--
Xiangping JIA
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
