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st: Re: replacing values in a variable with rowsums, aka "ereplace"


From   "Kim Lyngby Mikkelsen (KLM)" <klm@arbejdsmiljoforskning.dk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: replacing values in a variable with rowsums, aka "ereplace"
Date   Tue, 15 Jul 2008 09:43:12 +0200

If you have consecutive values, you should try to use -forvalue-, otherwise you could try to use -foreach-.

If you have y=1, y=2, ..., y=n, you could try to do something like this

forvalue n = 1/n {
egen x_`n'=rowtotal (d1-d40) if y=`n'
}
gen x=.
forvalue n = 1/n {
replace x=x_`n' if y=`n'
drop x_`n'
}

Rrgards Kim


-----Oprindelig meddelelse-----
Fra: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] På vegne af oreuter@emory.edu
Sendt: 14. juli 2008 16:17
Til: statalist@hsphsun2.harvard.edu
Emne: st: replacing values in a variable with rowsums, aka "ereplace"

Dear Statlisters,

I am searching for something that would do the equivalent of an
'ereplace'.  I have a set variables for which I generated a -rowtotal-
given some condition, e.g. (egen x=rowtotal (d1-d40) if y=1), but then
I need to replace some values in that same variable (x) with a
different -rowtotal- given a different condition.  I dont know how else
to explain it except to say that if there were an  'ereplace' command
the next command would look like this:

"ereplace" x=rowtotal(d2-d40) if y=2

In other words, I need to replace values in x with different sums of
variables.  I need to do this for a great many conditions so typing out
the list of variables to be added for each condition would be a minor
pain.


  Ora John Reuter
Emory University
Department of Political Science
327 Tarbutton Hall
1555 Dickey Drive
Atlanta, GA 30322
Phone(Atlanta)-1-931-312-9132
&#1058;&#1077;&#1083;&#1077;&#1092;&#1086;&#1085;
(&#1055;&#1077;&#1088;&#1084;&#1100;)-+89197154869


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