[talk-au] Proposed data import. Queensland peaks and mountains
Tim Ney
neyfamily1 at gmail.com
Mon May 5 07:29:34 UTC 2014
Hi Jason, there are 250k topographic map datasets at geoscience that contain contour information. I can't remember if they are 20 or 50m intervals. They are free, and available as shape files all over Queensland. Tiles are normally 40 x 40km. I have found this very useable particular in the Connors range area where peaks are not obvious because of the heavy vegetation.
I hope this helps
Sent from my iPhone
> On 5 May 2014, at 10:41 am, Jason Ward <jasonjward5 at gmail.com> wrote:
>
> Hi Tim,
>
> Agree with a zoned verification approach. To your point about accuracy would the OpenCycleMap countours be a valid positional accuracy check? If I read this link [1] correctly they are =/- 16m in vegetated areas and +/-5m.
> I note that this maps tiles have implemented at 10m intervals as well and if I were verifying this peak (Mt Toby) I'd suggest it could be made more accurate (moved left approx 150m).
>
> Would that be a better approach? [3]: FYI.
>
> [1]: http://www.nrm.qld.gov.au/services_resources/item_details.php?item_id=34171
> [2]: http://www.openstreetmap.org/#map=16/-21.1074/148.8531&layers=CN
> [3]: http://wiki.openstreetmap.org/wiki/SRTM
>
>
> Cheers,
>
> Jason
>
>
>> I don't want to be a downer but I found the information to be so inaccurate as to border on useless.
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