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Re: st: Use egen command with factor variables


From   Alfonso Sanchez-Penalver <[email protected]>
To   "[email protected]" <[email protected]>
Subject   Re: st: Use egen command with factor variables
Date   Thu, 28 Nov 2013 07:28:53 -0500

Hi Catharina,

My first impression is that you may have not defined the data as time series by using -tsset-. Have you?

Best,

Alfonso Sanchez-Penalver

> On Nov 28, 2013, at 2:52 AM, "Klepsch, Catharina" <[email protected]> wrote:
> 
> Dear Stata Users,
> 
> I was wondering whether it is possible to use the egen command with factor variables. 
> For example, I tried to generate the mean value for a lagged variable and used:
> 
> sort ID YEAR
> egen mean_x1 = mean(l.x1)
> 
> Unfortunately, there occurs an error message which states: 
> not sorted r(5)
> 
> I'm not quite sure why this happens, because I sorted the data before. Even if I type:
> bys ID YEAR: egen mean_x1 = mean(l.x1)
> 
> the same error message occurs.
> 
> Any ideas how I can fix that? Please consider that it is not reasonable for my programming to first generate the lag/lead and then generate the mean.
> 
> Thank's for any help.
> Catharina
> 
> 
> 
> 
> 
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