<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>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. </div><div><br></div><div>I hope this helps<br><br>Sent from my iPhone</div><div><br>On 5 May 2014, at 10:41 am, Jason Ward <<a href="mailto:jasonjward5@gmail.com">jasonjward5@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Hi Tim,<div><br></div><div>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.</div>
<div>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).</div><div><br></div><div>Would that be a better approach? [3]: FYI.</div>
<div><br></div><div>[1]: <a href="http://www.nrm.qld.gov.au/services_resources/item_details.php?item_id=34171">http://www.nrm.qld.gov.au/services_resources/item_details.php?item_id=34171</a></div><div>[2]: <a href="http://www.openstreetmap.org/#map=16/-21.1074/148.8531&layers=CN">http://www.openstreetmap.org/#map=16/-21.1074/148.8531&layers=CN</a></div>
<div>[3]: <a href="http://wiki.openstreetmap.org/wiki/SRTM">http://wiki.openstreetmap.org/wiki/SRTM</a></div><div><br></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">Cheers,<div><br></div><div>Jason</div>
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<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">I don't want to be a downer but I found the information to be so inaccurate as to border on useless.</blockquote>
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