[talk-au] New CC-BY datasets due Monday 28 September on Government 2.0 Taskforce website

John Smith deltafoxtrot256 at gmail.com
Sat Oct 3 15:09:47 BST 2009


2009/10/4 Brendan Morley <morb.gis at beagle.com.au>:
> That's one of the reasons why I'm tagging DCDB-derived roads with "note=DCDB
> indicates a right of way in this location. Needs a field survey to confirm
> highway type and actual alignment." Sometimes the road formation does not
> exist!

That was just an example, I surveyed that area a while back and one
end goes into someones car port :)

I'm just pointing out where the boundaries on paper differ from the
real world :)

> In that case I'm actually intending to remove the highway tag completely,
> but leaving the way included in the database. This would indicate that
> "somebody" evaluated that the legal right of way existed and that "somebody"
> visited the location and found no transportation infrastructure. Maybe there
> is a highway tag after all that fits? In some other datasets it's seems to
> be either called "unformed" or a "construction line" - not sure which
> definition fits here though.

We had this discussing some time back about the difference between
non-existing roads and roads that simply haven't been surveyed, this
data at least would make it legit to show roads don't exist in reality
without infringing someone elses copyright.

> Another alternative is to add an area rather than a way and tag as
> natural=grass or =wood (and maybe access=yes?)

Not all crown land is going to be roads, and we need to be careful
about how this data is used, I think it will be useful as a secondary
source, for example it will be useful when you can't get a good GPS
signal, I've nudged some roads I surveyed in some near by national
parks, that had poor coverage.

> So there's "should" be nothing stopping you from traversing the length of
> Horswood Road, formed or not. If you get challenged, just say you're
> intending to follow Horswood Road. Having an easily-attainable copy of the
> DCDB map in your hand may help, which is another reason why having a CC-BY
> DCDB is such an epic win.

That might work in some areas, but as Liz's boss found out you can
also get a gun pointed at you, public road or otherwise :)




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