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st: RE: a possible - foreach - question?

From   "Martin Weiss" <>
To   <>
Subject   st: RE: a possible - foreach - question?
Date   Tue, 14 Oct 2008 11:04:09 +0200

sysuse auto, clear

*get the levels of mpg (a in your xmpl)
levelsof mpg, loc(levels)

*loop through them, create new vars along the way
*price takes place of b in your code, headroom is c
foreach lev of loc levels{
g result`lev'=`lev'*price- headroom

*get the means from -summarize-
su result*


-----Original Message-----
[] On Behalf Of Carlo Lazzaro
Sent: Tuesday, October 14, 2008 10:50 AM
Subject: st: a possible - foreach - question?

Dear Statalisters,
I have three variables (a; b; C with 10,000 observations each) in long
For each value of a I would like to obtain the following one:

(a1 * b1) - c1

Repeat the above reported would-be 10,000 times (i.e., from a1 to a10,000)

Create a new variable d in which the mean of each one of the 10,000
iterations are stored and can be displayed.

I suppose there's way of doing this with Stata 9.2/SE, but I cannot figure
out the proper syntax.

Thanks a lot for your kindness and for your time.

Kind Regards,


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