allsynth: problem using allsynth by wiltshire and quarterly data

[Ulyana Khan]

Hello,

For my dissertation I am using allsynth to do DiD with ticket prices. I have quarterly data, it is panel data. Using my quarterly data it has some trouble.
I use the following code:
gen Quarterly = yq(YEAR, QUARTER)
format Quarterly %tq

this is where i encournter problems. I have formatted the data as quarters but i cannot run allsynth like this:


allsynth Ticket Ticket(2018q3) Ticket(2012q1) Ticket(2015q1), trperiod(2018q3) trunit(6) figure gapfigure(placebos) pval keep(refugeeresults) plac rep
This also does not work:
allsynth Ticket Ticket('=tq(2018q3)') Ticket('=tq(2012q1)') Ticket('=tq(2015q1)'), trunit(11) trperiod('=tq(2018q3)') figure gapfigure(placebos) pval keep(refugeeresults) plac rep

It gives me these errors: "trperiod() invalid -- invalid number" or "variable trperiod not found".

Any idea how to fix this so allsynth can run and have proper labels?

Would appreciate any help!

[Dimitriy V. Masterov]

I suspect your left quote is wrong. Try this

 
 `=tq(2015q1)’