Hello everyone,

I'm wondering how to 'insert' empty values in my panel data. My data looks as follows:

Array

For each b_id I want a full series from 2008-2018. So for example, for b_id 174 I would want to automatically create 4 entries:

174 - United Kingdom - 2008
174 - United Kingdom - 2009
174 - United Kingdom - 2010
174 - United Kingdom - 2011

All other variables will then be missing.

Kind regards,

Philippe