I have a 4 variable VECM. All of my variables are entered as logs. However, for the short run equations, they are automatically differenced as (Xt - Xt-1). I want to difference them as (Xt - Xt-4), as I have quarterly data and wish to compute year over year change. I am aware of how to create this series in EViews,
Code: Select all
series Z = log(X) - log(X(-4))
...however I do not know how to enter it into the VECM so that the model is estimated using my new series.
Any assistance appreciated