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Re: st: egen total is not equal to total
From
Scott Merryman <[email protected]>
To
[email protected]
Subject
Re: st: egen total is not equal to total
Date
Sat, 16 Nov 2013 19:56:20 -0600
On Fri, Nov 15, 2013 at 10:47 PM, Haluk Vahaboglu <[email protected]> wrote:
> .bysort x y z: egen
> TOTAL=total(M)
> .bysort x y z: replace
> TOTAL=. if _n!=[1]
> .total M TOTAL
>
-total- is calculating sum of M only where TOTAL is non-missing.
Compare the number of observation in the following -total- commands :
sysuse auto,clear
bys rep fore: egen m = total(mpg)
bys rep fore: replace m = . if _n!=[1]
total m mpg
total mpg
total m
Scott
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