Problem with xtdidregress post estimation

[Mateus Maciel]

I was running the following command:

gen densidade = populacao/area

gen pib_percapita = pib/populacao

xtset id_municipio year

generate did = treated*treatment

xtdidregress (marriage_women pib_percapita g3 g4 densidade populacao taxpayers) (did), group(id_municipio) time(year)

estat trendplots, ytitle(marriage_women treated)

estat grangerplot

estat ptrends

However, when I run the following post-estimation commands, I get the following error messages:

estat trendplots, ytitle(marriage_women treated)
treatment assignment times vary; not allowed with estat trendplots

estat grangerplot
estat grangerplot not valid

None of these errors were communing up, and even after reading the issues in the forum, I could not solve mine.

I am attaching the codes and the dataset in this link, so I think it will be easier to handle the dataset.

[Joerg Luedicke (StataCorp)]

I was able to successfully run your code in Stata 17 and 18. It looks like you are using an out-of-date version of Stata 17. In Stata, type

update query

and follow the instructions on the screen. Once updated, both estat trendplots and estat grangerplot should work.

[Mateus Maciel]

Thank you so much! I worked fine.