RE: st: Graphing a function (setting coefficients at their means)

[David Torres <writeon4truth2@msn.com>]

Okay, Nick,

So if I can't really graph my equation using -twoway function-, is there a way to do so using margins?  I assumed that it's impossible since I was using a nonconventional estimator (-xtivreg-).

For a bit more context, I have a time-varying binary endogenous predictor that I'm instrumenting for.  This endogenous variable is interacted with dummies for race, but all appear in the parenthetical portion of -xtivreg-.  I want to show the marginsplot for race, taking into account the interactions, but I'm afraid the -xtivreg- is not recognizing my endogenous variable as time-varying.

Maybe I'm doing something wrong with the IV estimation. ??

Diego

--

David Diego Torres, PhD
NSF SBE Postdoctoral Research Fellow
Houston Education Research Consortium
Rice University
6100 Main Street, MS-28
Houston, TX 77005
Phone: 713-348-2984
Email: ddtorres at rice dot edu


----------------------------------------
> Date: Mon, 30 Dec 2013 14:05:26 +0000
> Subject: Re: st: Graphing a function (setting coefficients at their means)
> From: njcoxstata@gmail.com
> To: statalist@hsphsun2.harvard.edu
>
> If I understand you correctly, you need to do the manipulations before
> and outside -twoway function-. -twoway function- contains no
> intelligence to do with previously estimated models. You can,
> naturally, refer to r-class results and e-class results in calls to
> -twoway function-, but I am confident in speculating that -twoway
> function- has no hidden options to make marginal calculations easier.
>
> Nick
> njcoxstata@gmail.com
>
>
> On 30 December 2013 12:14, David Torres <writeon4truth2@msn.com> wrote:
>> Statalisters,
>>
>> I'm using the -twoway function- command to display the results of a regression equation. Is there a way to set at their means those coefficients that are not of interest in the command line?
>>
>> Just in case you're wondering why I'm not using -margins- to get predicted probs, I can't because I'm using the IV estimator, which presents problems for a variable of interest to be graphed.
>>
>> Cheers,
>> Diego
>> Sent from my iPhone
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