Hi,

I have created an id variable for a pair of countries(exporter importer) based on their distance (DIST):

egen pair_id = group(DIST).

However, in my base, the distance ISR-JOR is not exactly the same distance JOR-ISR considering all the decimals.

What can I do?


exporter importer pair_id year DIST
ISR JOR 2 1990 114.6373
ISR JOR 2 1998 114.6373
ISR JOR 2 1986 114.6373
ISR JOR 2 1994 114.6373
ISR JOR 2 2002 114.6373
ISR JOR 2 2006 114.6373
JOR ISR 3 2002 114.6373
JOR ISR 3 1998 114.6373
JOR ISR 3 2006 114.6373
JOR ISR 3 1990 114.6373
JOR ISR 3 1986 114.6373

Thanks!