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Re: st: time series from panel data
From
"Whelan, Paul" <[email protected]>
To
"<[email protected]>" <[email protected]>
Subject
Re: st: time series from panel data
Date
Sun, 10 Feb 2013 20:16:01 +0000
Ahh. Got it
Thanks
Sent from my iPhone
On 10 Feb 2013, at 20:06, "Cory Smith" <[email protected]> wrote:
> Don't do the by/egen. Instead,
>
> collapse (mean) eps, by(date)
>
> On Sun, Feb 10, 2013 at 12:36 PM, Whelan, Paul
> <[email protected]> wrote:
>> Hi,
>>
>> I would like to take the 'mean' of the residuals from a panel
>> regression at each point in time to plot the average residual
>> in the cross-section as a time series. Here is an example and
>> the code I am using :
>>
>> xtreg y x1 x2, fe vce(robust)
>> predict yhat
>> generate eps = y - yhat
>> by date, sort: egen mean_residual = mean(eps)
>>
>> I would then like to export the resulting mean_residual to excel
>> as a single time series i.e., one observation for each date. The
>> problem is that I get many mean_residuals for each date corresponding
>> to each entity in the cross-section at that point in time.
>>
>> Is there a simple way to extract a single time series?
>>
>> thanks
>>
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