[talk-au] Suburb boundaries - getting close
b.schulz.10 at scu.edu.au
b.schulz.10 at scu.edu.au
Mon Feb 16 23:38:52 GMT 2009
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.carter at gmail.com>
Date: Monday, February 16, 2009 10:10 pm
Subject: [talk-au] Suburb boundaries - getting close
To: OSM Australian Talk List <talk-au at 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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