st: how can I generate margins for OLS with no constants and for fixed effects panel logit

["Ozturk, Orgul" <odozturk@moore.sc.edu>]

Hi all,
I have sent this email before but did not get an answer--I think my email failed to post (I was trying to attach my do file and data)
 
I am trying to produce average marginal effects after an OLS regression with no  constant term.
It returns "non-estimable"

Moreover, how can one produce AMEs using margins command after a fixed effects logistic regression (after xtlogit, fe) --again I get an unestimable 

My commands are as follows:

reg logrealwagechange i.promCurrentJob##i.woman#i.govt##i.schoolinggroup $extras $changeindustryvars $changeoccupations  if careerstage==1, noc
margins, at(woman=1 ) at(woman=0 ) over (govt schoolinggroup promCurrentJob) post
margins, coeflegend

xtlogit promCurrentJob i.woman##i.careerstage##i.govt##i.schoolinggroup $usualsuspects, fe
margins, at(woman=0 ) at(woman=1 ) predict(pu0) over (careerstage schoolinggroup govt) post



Woman and government are 0/1 dummies.  Schooling group and careerstage are categorical variables with three discrete values, (0 1 2 ) and (1 2 3) respectively.  Thank you!


Orgul

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