On Jun 17, 2021, at 2:14 AM, Andrew Harvey via Talk-au <talk-au@openstreetmap.org> wrote: >> It's a fair point that Vicmap's own postcode field shouldn't be taken as >> 100% correct, it looks like it might have been assigned based on postcode >> boundaries so might still suffer issues because of this, but where >> addr:postcode is not already mapped, most of the time the Vicmap one will be >> correct.
To be clear, I'm 100% OK with postcodes on nodes with addresses, such things belong together (as that tag on that node): it is indeed "the correct way to go." (IMHO). I'm not terribly excited (dejected) to see a suggestion that ABS' described "imprecise process" (of conflating postcodes with geographic boundaries) is glibly said as "we can still have postal_codes on admin boundaries where the vast majority of addresses within that boundary have that postcode." In the USA (in OSM) we say rather bluntly "ZIP codes are not boundaries." (ZIP codes are USA postcodes). It seems ABS agrees. Putting them on entire admin boundaries, especially where they are not 100% correct (all of them?) adds noise to our data, which I am identifying and say "in the USA, we just don't do this" (as they are simply not the same). Though, postcode tags on address nodes, sure. Good way to do it, correct way to go, et cetera. In the USA, OSM imported mid-2000s national census data to "lay down a road grid." We continue to unravel and fully "TIGER Review" these data, 15 years later. They are "noisily (though that gets better over time, with effort) mostly correct" today, but. There is a wide distribution / spectrum of such (postal) data scattered around OSM in various jurisdictions. I'm saying that at this level of conversation, pave the road smarter, rather than glibly or easily. Good planning makes better maps. Thank you for saying "fair point," too. I hope I haven't beaten it up too much, so thank you to all for patience reading. _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
