Re: st: running marginsplots without rerunning margins again

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

At 10:39 AM 8/11/2011, Scott Merryman wrote:
> There is an easier way.
>
> -margins- has an undocumented saving() option
>
> clear*
> webuse nhanes2
> regress bpsystol agegrp##sex if region ==4
> margins agegrp, saving(mymargins,replace)
> clear*
> use mymargins
> l
> line _mar _m1,  lc(black)  ///
>   || rcap _ci_u _ci_l _m1, lc(black) ///
>   ||, legend(off)  xlabel(, valuelabel) ytitle(Linear Prediction)

Interesting. You aren't using marginsplot, but I guess you have the 
whole arsenal of graphics commands at your disposal.

With a little tweaking, this also works with Stata 11.2. You just 
substitute agegrp for _m1.

version 11.2
clear*
webuse nhanes2
regress bpsystol agegrp##sex if region ==4
margins agegrp, saving(mymargins,replace)
clear*
use mymargins
l
line _mar agegrp,  lc(black)  ///
  || rcap _ci_u _ci_l agegrp, lc(black) ///
  ||, legend(off)  xlabel(, valuelabel) ytitle(Linear Prediction)

Run that same code under Stata 12, though, and you get an error, i.e. 
it doesn't seem to respect the version control. So, this may be a use 
at your own risk, i.e. the code isn't guaranteed to work the same way 
in the future.


-------------------------------------------
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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