On 28 April 2014 14:23, Michael Gratton <[email protected]> wrote: > So you are saying the ABS suburb boundaries should be checked individually > rather than imported en mass? How do you know that the quality of the > GNB/Wikipedia/etc data is any better than that of the ABS dataset where they > disagree?
Yes. Firstly, the ABS data is several years out of date. The GNB is the authoritative source for whether a suburb exists or not. Comparing several sources - council, gazette, ABS, GNB - if they concur, then you've probably got something accurate on your hands. If they disagree, then further research is in order, and it is possible that there may not be an open and accurate data source for that suburb boundary. Take the opportunity to fix Wikipedia at the same time. Coastlines, waterway boundaries are also an issue. > On a related note, what's the appropriate way to map suburb-sized areas that > are partitions? A way for each suburb that share nodes along common borders, > a way for each suburb that don't duplicate nodes along common borders, or > using a single way for the border and using a relation? Yes. >> Hopefully we will have access to the accurate and official suburb >> boundaries in Sydney in an open format sometime in the future (like we >> have for other cities). Then this problem will go away. > > > I literally just heard back from LPI about my enquiry: "LPI is currently > reviewing the licencing framework and will be in a better position to answer > your query within the next 4 to 6 weeks", so maybe we will have the data > sooner rather than later. I've asked if I can make a submission to whoever > is doing the review, will post the details there if I get them so we can > canvas for a good outcome. If we have the definitive suburb boundaries, then yes, they are definitive. We already have the definitive information for a number of Australian cities, and this is goodness. The ABS data has numerous problems, right around the country. From inaccuracies to completely fictitious regions. It's made for stats, and I'd be opposed to a blind import, and I think I can back up that position. Ian. _______________________________________________ Talk-au mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-au
