addr:neighbourhood

Lately, for some reason, I’ve been interested in mapping the addr:neighbourhood tag, which I use to represent Indonesia’s RT-RW addressing system.To me, the RT-RW system is both ubiquitous and mysterious at the same time. I use it every day whenever I want to send or receive an address, yet all this time, I haven’t even known where to find the official map showing the boundaries between neighbouring RT-RW areas. Rumour has it that government officials might have access to such elusive maps. Perhaps people working in the logistics industry do, too. But personally, I want to unravel this mystery by myself as a personal pastime project.In the city where I live, we use this kind of hierarchical addressing system, starting from province → city → kecamatan → kelurahan → RW → RT. All those fields are text, except the last two (RT/RW), which are numbers, sometimes written in different formats. Sometimes people write them as RT 01/32 (meaning RT 01 + RW 32). Sometimes it’s RT 01 RW 32.…