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AW: st: re: Programming stata using egen functions


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   AW: st: re: Programming stata using egen functions
Date   Tue, 28 Apr 2009 15:06:52 +0200

<> 

Let me guess, you never dereferenced the -local-s for the -max- calculation? Note the difference here:

*************
local m_108  2.33
local m_109  3.4
local m_1010 1.2
//with dereferencing
di max(`m_108', `m_109', `m_1010')
//w/o dereferencing
di max(m_108, m_109, m_1010)
*************



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Anne Resende
Gesendet: Dienstag, 28. April 2009 13:02
An: statalist@hsphsun2.harvard.edu
Betreff: Re: st: re: Programming stata using egen functions

Hi
Thanks for your response.
I am a beginner in stata programming but my aim is to create a “mean”  
of the variable logwage to after run the bootstrap.
So when I use rowmax( )  I expect the program to calculate the maximum 
of the value of the variables in parenthesis. For each `s’ I need the 
maximum value between the `sp’ numbers.  
For example: m_108 = 2.33
m_109 = 3.4
m_1010= 1.2
So I want the program to return de value 3.4. When I use the function 
max the program returns me the value of m_1010 because it is 
considering the max between the values 108, 109, 1010.
So after the program calculate the maximum value within it m_`s’`sp’ , 
I trying to use the rowtotal( ) to sum all of the maximum values and to 
end up with just one variable.
Thanks 
Anne



Kit Baum wrote:


><>
>egen rowmax() and rowtotal() are meant to be used with more than one  
>variable (rather than a scalar) as an argument.
>
>     qui egen `exem_`s''=rowmax(m_`s'`sp')
>
>if m_`s'`sp' is a scalar, its rowmax or rowtotal is itself--a constant  
>value for each row (observation). What are you trying to do?
>
>
>Kit Baum   |   Boston College Economics & DIW Berlin   |   
http://ideas.repec.org/e/pba1.html
>                               An Introduction to Stata Programming   
>|   http://www.stata-press.com/books/isp.html
>    An Introduction to Modern Econometrics Using Stata  |   
http://www.stata-press.com/books/imeus.html
>
>
>
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