Re: st: running marginsplots without rerunning margins again

[Richard Williams <richardwilliams.ndu@gmail.com>]

At 08:10 PM 8/10/2011, Doug Hess wrote:
> I just installed Stata 12 and am playing with the "marginsplot"
> command. I am wondering how to run margins plot on a restored margins?
> Can it? Complex margins commands can take a long time to run. Is there
> a way to restore or use saved results from a complex running of
> margins so that I can fiddle with the graph later?
>
> Come to think of it, how do I redisplay results from a margins command
> after "restoring" a stored file or "using" a saved file. For
> regression estimates you just type regress and it shows it. How is
> this done for other saved files.
I thought it would simply be a matter of using the -post- option of 
margins and the -est store- and -est restore- commands. To my 
surprise, though, the following produces an error at the end:
clear all
sysuse auto
reg  price mpg i.foreign
margins foreign, post
est store margins1
marginsplot
reg  price mpg i.foreign  weight
est restore margins1
margins
marginsplot

The error is "previous command was not margins." But if you do 
-ereturn list-, it does say the last command was -margins-. I am 
surprised it doesn't work, and I wonder if this is a bug or if there 
is some good reason for this.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME:   (574)289-5227
EMAIL:  Richard.A.Williams.5@ND.Edu
WWW:    http://www.nd.edu/~rwilliam

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