How to convert annual to quarter series in panel data

[Richa jain]

I have annual data for 33 countries on a variable X. I want to transform these annual values into quarterly ones by assuming identical quarterly values equal to the corresponding annual values.
Could anyone please share the code for the same to convert annual series to quarter series for panel data

[Nick Cox]

You will want to do this because. presumably, you have another dataset with quarterly data. If so merge will do everything needed.

[Richa jain]

Sir, I donot have quarter data. I just want to convert annual data values to quarter series.

[Nick Cox]

That sounds like an odd thing to want to do.

[Richa jain]

I have annual data series from 1995-2019 for a variable X. I now want to make a quarter dataset 1995Q1 to 2019Q4 where for each quarter in 1995 and so on, I assign identical values from series X corresponding to its annual value.

[Nick Cox]

Sure, but quite why? Wanting to bump up the sample size would be a bad reason. Is there a better one?