Re: [talk-au] Fixing ABS boundaries?
On 14 February 2010 10:58, Sam Wilson s...@archives.org.au wrote: Ought one fix ABS administrative boundaries to bring them into line with roads (or nearmap, or surveys, or whatever else seems to actually be accurate)? The more I've had to deal with this the more I think it's a bad idea to move them to match roads. Chances are the ABS and other govt agencies won't accept any data we produce for QA reasons so would there be any real reason to improve the data if it's close enough? ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Fixing ABS boundaries?
On 14 February 2010 11:26, Sam Wilson s...@archives.org.au wrote: You're quite right, there's no reason to change the ABS data if it is, by definition, correct. I guess I'd just been thinking that it was probably supposed to match the roads. Which makes it difficult to fix roads if the boundaries are always getting in the way, potlatch and JOSM don't do anything sensible to protect boundaries at this point in time. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Fixing ABS boundaries?
Sam Wilson wrote: So the ABS defines boundaries with coordinates, then? Rather than roads etc. (as, say, electoral boundaries are defined)? You're quite right, there's no reason to change the ABS data if it is, by definition, correct. I guess I'd just been thinking that it was probably supposed to match the roads. The ABS boundaries were defined many years ago, usually by some form of surveying data based on existing roads, watercourses etc.. But in a lot of cases, the roads which were originally used have been moved, in some cases by tens of metres. The ABS boundaries have never been updated. Richard ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Fixing ABS boundaries?
On 14 February 2010 15:37, Richard Colless fire...@ar.com.au wrote: The ABS boundaries were defined many years ago, usually by some form of surveying data based on existing roads, watercourses etc.. But in a lot of cases, the roads which were originally used have been moved, in some cases by tens of metres. The ABS boundaries have never been updated. You also have differences in datums that cause small errors and so on... ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
