Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: marginsplot error: margins not uniquely identified


From   Molly Moore Jeffery <[email protected]>
To   [email protected]
Subject   Re: st: marginsplot error: margins not uniquely identified
Date   Mon, 20 Feb 2012 14:30:01 -0600

I followed up with Stata tech support. 

For future reference: the problem was solved by clearing all factor variable settings -fvset clear _all-


> Date: Sat, 18 Feb 2012 12:56:19 -0600
> From: Molly Moore Jeffery <[email protected]>
> Subject: st: marginsplot error: margins not uniquely identified
> 
> I'm having trouble using -marginsplot- (Stata version 12.1). I get the following error message: "_marg_save has a problem.  Margins not uniquely identified. r(9999);"
> 
> The -margins- command itself works exactly as expected. I have a factor variable with five levels interacted with a binary participation variable. These two variables are included in the model as i.years##i.participation. The margins command -margins years#participation- produces a list of 10 predicted values, as desired. I would like to create a plot like the one used to illustrate -marginsplot- on the Stata site: http://www.stata.com/stata12/margins-plots/ (see the first plot of agegrp#sex). 
> 
> I've tried just typing -marginsplot-, as in the example code. 
> 
> I've also tried specifying the dimensions: - marginsplot, xdimension(years) plotdimension(participation)-
> 
> In both cases, I get the same error message "Margins not uniquely identified"
> 
> I haven't found any reference to this error code. Does anyone have any ideas what I might be doing wrong?
> 
> Thanks very much for the help.


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index