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Re: st: predictnl expression too long


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: predictnl expression too long
Date   Fri, 8 Mar 2013 09:31:51 +0100

On Thu, Mar 7, 2013 at 8:34 PM, Richard J Swartz wrote:
> I am a new stata user and I'm trying to use the command "predictnl" to create an estimate of a 3-way interaction effect for a Tobit model (a la Ai and Norton 2003: "Interaction terms in logit and probit").  When I run "predictnl" stata gives me the error message:
>
> Expression too long
> r(130);

You can often dramatically reduce the length of a -predictnl-
expression by using the -xb()- function, see: -help predictnl-.

Hope this helps,
Maarten

---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany

http://www.maartenbuis.nl
---------------------------------

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