Well, the syntax diagram for -by- allows a varlist
******************
sysuse auto, clear
by foreign rep78, sort: summarize price
g t=price>10000
ta t
by foreign rep78 t, sort: summarize price
g r=gear>3
ta r
by foreign rep78 t r, sort: summarize price
by foreign rep78 t r, sort:keep if _n==_N
*******************
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Ashim Kapoor
Sent: Tuesday, September 16, 2008 11:21 AM
To: [email protected]
Subject: st: More than 2 arguments for by
Hello everyone:
I want to do the following :
sort year state cnum votes
by year stata cnum votes : keep if _n==_N
That way I get the guy with the max no of votes.
Now when I do this for 1 or 2 arguments for by then it works, but not
for 4 arguments I have . Does by have a limit on how many arguments it
can have ?
I read -help by- and that does mention using by in the following
fashion : -- > by year ( state) . Do I need to put in brackets for the
other arguments?
Could someone please clarify?
Thank you,
Ashim.
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