ppmlhdfe Gravity Fixed Effects

[Lama Basem]

Dear Statalist members,
I am a new member of this forum, I have a question and I hope if I can have an answer.
I have a gravity dataset to evaluate the effectiveness of RTAs.

because I have the bilateral trade so there is reporters and partners situation, the model should be estimated by country pair fixed effects and country time fixed effects

 egen id=group(reportercode partnercode)
ppmlhdfe Trade LGDP  LDis RTA ,a(i.id##c.year)

I have checked the help file for ppmlhdfe command and I am still not sure if this code will run the regression with country pair fixed effects and country time fixed effects
Dear Prof Joao Santos Silva , I would appreciate if you can give me your feedback on this.

Regards,

Lama

[Joao Santos Silva]

Dear Lama Basem,

I am afraid I am not that familiar with the factor notation, but I am sure others will be able to help.

Best wishes,

Joao