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Re: st: loop with egen


From   Richard Goldstein <richgold@ix.netcom.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: loop with egen
Date   Fri, 08 Feb 2013 08:37:22 -0500

whoops ...

forgot to note that you also need to supply new varnames

e.g., egen mean`v' = ...

Rich

On 2/8/13 8:35 AM, Richard Goldstein wrote:
> you need to supply a varlist as in
> 
> foreach v of var mpg turn weight {
> 
> Rich
> 
> On 2/8/13 8:29 AM, Nahla Betelmal wrote:
>> Dear Statalist,
>>
>> I am trying to generate the mean and standard deviation for more than
>> 30 variables. I tried to do that using the following loop
>>
>> foreach v of var {
>> egen mean = mean(`v')
>> egen sd = sd(`v')
>> }
>>
>> however, it only generate the mean and standard deviation for the
>> first variable only.
>>
>> I got this message :mean already defined
>> r(110);
>>
>> what should I add to the loop , so it can generate the mean and
>> standard deviation for each variable in separate column?
>>
>> Many thanks
>>
>> Nahla
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