Return a date string of an observation of a series

[evs123]

Hello,

I am trying to write a loop to backcast series x using series y's growth rate. For example, the full sample size is from 1980q1 to 2010q4, where series x is only available from 1995q1 to 2010q4, while series y is from 1985q3 to 2010q4. Is there any command which allows to return the relative date of the starting observation (which is 1995q1) of series x.

Thanks!

[EViews Gareth]

Code: Select all

=@otod(@ifirst(x))