I have the following data. A1 is the address of corporation. A2 equals 0 if the corporation does not change address, and 2 (or 1 and 3 when id==2) means that the firm moves to a new address 2.
My question is: H can I obtain the following results (A1 denotes the current address)?
Code:
* Example generated by -dataex-. To install: ssc install dataex clear input float(id year A1 A2) 1 2010 1 0 1 2011 1 2 1 2012 1 0 1 2013 1 0 2 2010 2 1 2 2011 2 0 2 2012 2 3 2 2013 2 0 end
Code:
* Example generated by -dataex-. To install: ssc install dataex clear input float(id year A1 A2) 1 2010 1 0 1 2011 2 2 1 2012 2 0 1 2013 2 0 2 2010 1 1 2 2011 1 0 2 2012 3 3 2 2013 3 0 end
