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Re: st: lpoly predict residuals
From
Alex Olssen <[email protected]>
To
[email protected]
Subject
Re: st: lpoly predict residuals
Date
Tue, 14 Jun 2011 08:42:56 +1200
I think the option generate may allow you to get residuals.
sysuse auto, clear
lpoly price weight, nograph at(weight) generate(fitted)
gen residuals = fitted - price
Is this what you want?
Kind regards,
Alex Olssen
On 14 June 2011 01:23, Maarten Buis <[email protected]> wrote:
> On Mon, Jun 13, 2011 at 3:12 PM, Stefan Pichler wrote:
>> I have trouble predicting the residuals after the lpoly command. I first run "lpoly y x" on my dataset and then use "predict" to get residuals. However, Stata returns "not sorted", which I don't understand.
>
> Whether or not -predict- is allowed after a command can be seen by
> looking at -help <command> postestimation- where <command> needs to be
> replaced by whatever command you want to look at. There is no such
> help file for -lpoly-. Another hint that this may be problematic is
> that -predict- is for use after estimation commands, which leave
> things behind in e(), while the helpfile for -lpoly- says it leaves
> things behind in r(). These two things suggest to me that you cannot
> use -predict- after -lpoly-.
>
> Hope this helps,
> Maarten
>
> --------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
>
>
> http://www.maartenbuis.nl
> --------------------------
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