One combination not cosidered in your example data is
A B
0 0
which means your final data should look like this:
A B C
0 0 0
and not like this:
A B C
0 0 .
So it seems to me you have to consider missing:
egen C=rsum(A B)
replace C=. if A==. & B==.
dan
So any code that
>>> [email protected] 02/20/04 02:49pm >>>
How I can add two variables without consider missing-values?
For example i have two variables A anb B:
A B
7 .
1 3
3 .
. .
1 4
. 5
I would like plus A + B = C
A B C
7 . 7
1 3 4
3 . 3
. . .
1 4 5
. 5 5
Thank`s in advance!
Jorge Tuesta
MTPE
*
* 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/
