Time Varying constant

[kpr]

Hi!

I wonder how to generate a time-varying constant series such as

y=1, if 1999M1--2009M1
y=2, if 2009M2--2013M3
y=3, if 2013M4--2018M1
......

Thanks

[startz]

I wonder how to generate a time-varying constant series such as

y=1, if 1999M1--2009M1
y=2, if 2009M2--2013M3
y=3, if 2013M4--2018M1

Code: Select all

smpl 1999M1 2009M1 series y = 1 smpl 2009M2 2013M3 y = 2 smpl 2013M4 2018M1 y = 3 smpl @all

[kpr]

So it seems not possible to avoid using SMPL so many times. Thanks for the reply.