Hi hi, Firstly, having suburb boundaries will allow OSM to be even closer to a UBD replacement :).
Anyway, my vote would go for relations. Yes, they're tricky and a lot of people don't understand them but given the current OSM data model they're the right choice. My main argument for relations is that suburb boundaries have a tendency to be defined in terms of roads, creeks etc and including these existing ways will greatly reduce the processing load on OSM. Also, having 3 ways in close proximity (eg, 2 suburb boundaries either side of a road) will get rather ugly when editing. Especially in the flash editor where selecting closely spaced objects can be difficult. Whichever data method is used though this will be a great boost to the OSM dataset, your effort is appreciated. ----- Original Message ----- From: Franc Carter <franc.car...@gmail.com> Date: Monday, February 16, 2009 10:10 pm Subject: [talk-au] Suburb boundaries - getting close To: OSM Australian Talk List <talk-au@openstreetmap.org> > Ok, it seems my conversion script is now producing sane results > so it's time > to work out what the final output should look like. > > The first question that I think we need to answer is, how do we > representthe > data in OSM, there appears to be 3 options:- > > 1. Closed ways > 2. Relations > 3. Borders with a left/right tag > > Then we need to decide on what tags to apply to the data. The > raw data has > three fields > > * STATE_2006 A numerical > identifier for the state the suburb is in > * SSC_2006 An > identifier provided by the ABS > * NAME_2006 The name of the > suburb, which may have the old name in > '()' after it. > > So, my initial proposal for tags is:- > > * name=? > (with any old name > removed) > * source=Based_on_Australian_Bureau_of_Statistics > _data (ABS ask for > this) > * ABS:reviewed=no > * ABS:STATE_2006=? > * ABS:NAME_2006=? > * ABS:SSC_2006=? > > The 'ABS' part is just a suggestion - It's a bit short for my liking > > We also need to decide where these tags go - nodes, ways, > relations. And if > we go for > the left/right approach a decision on how to > > > -- > Franc >
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