I need help with marginsplot

[Vincenzo Picarelli]

Hi. I want to use marginsplot after FRM regression. I don't want to see all variables, but only one "meritocracy" which is additive index. Meritocracy variable take values from 0 to 5. Also, I want to see other dummies variables. If I calculate margins with "margins, dydx(*)", I have this problem:
-marginsplot, xdimension(meritocracy incent_red per_laureati exporter)
meritocracy not a dimension in margins results
r(322);
More, if I calculate margins only for "meritocracy", then I have this problem:
-margins meritocracy, dydx(*)
factor 'meritocracy' not found in list of covariates
r(322);

How can I resolve?
Thank you.

[Carlo Lazzaro]

Vincenzo:
if -meritocracy- is a categorical variable, what if you type:

margins i.meritocracy, dydx(*)

[Vincenzo Picarelli]

and if -meritocracy- is not a categorical variable?

[Rich Goldstein]

please show, using CODE blocks (read the FAQ for more): (1) your estimation command and (2) your desired margins command

[Carlo Lazzaro]

Vincenzo:
-margins- was basically conceived for categorical variables.
See the Example #6, -margins- entry, Stata .pdf manual for continuous variales (option -at-).