[talk-au] Mapping tracks from Strava heatmap

[Ewen Hill]

Hi,
  Having a look at the Strava heat map, I can't see any activity at all.
Select labels and hybrid to see the OSM layer,
https://www.strava.com/heatmap#17.00/150.12413/-33.87746/hot/all
https://www.strava.com/heatmap#15.99/150.14939/-33.91318/hot/all

Nor can I see any sort of trail using the imagery available to us and the
fact that one of the paths clearly crosses a cliff is showing it doesn't
exist so Is this mapping from a bushfire response or where a cool burn took
place with  small 4wd track or firebreak or was the editor thinking
something existed?

To take Tony's comment about ground truthing... I have recently been
looking for supposed osm tracks in a particular area without success
however the strava heatmap now shows my meanderings around these now
removed trails so while the Strava heat layer is fantastic for aligning
known tracks, it shouldn't be used for the creation of new tracks without
other validation and I do get geographically challenged in the bush... a
lot!

Ewen



On Sun, 26 Feb 2023 at 20:55, Tom Brennan <website at ozultimate.com> wrote:

> Sorry, my bad! I should have linked the "track" on the other side of
> Whalania Creek:
> https://www.openstreetmap.org/way/963735356
>
> cheers
> Tom
> ----
> Canyoning? try http://ozultimate.com/canyoning
> Bushwalking? try http://bushwalkingnsw.com
>
> On 26/02/2023 8:20 pm, forster at ozonline.com.au wrote:
> > Hi
> >
> > Am I missing something? I looked at way 952248376 and found a user
> > Pieseczek with 2 changesets and 4 new ways over a year old. If there was
> > any reference to Strava heat maps then I missed it. Is there any
> > indication whether Pieseczek is resident in Australia apart from the
> > likely origin of the name?
> >
> > If the ways are solely based on heatmaps, they should be deleted because
> > they can not be ground truthed. But they appear to map ridge lines. Were
> > they made from the satellite photos or contours? Ridge lines can be
> > ground truthed and belong on OSM.
> >
> > I agree with Cleary on mapping of illegal trails but that may not be
> > relevant in this case.
> >
> > Tony
> >
> >> Do people have a view on the armchair mapping of tracks from Strava
> >> heatmaps?
> >>
> >> I can see a bunch of tracks in Kanangra-Boyd NP that have been mapped
> >> by an overseas mapper off Strava heatmap.
> >>
> >> They almost certainly don't exist on the ground. They are known
> >> bushwalking routes (off track), but would be very unlikely to have a
> >> track even in good times, let along after the fires and 3 years of La
> >> Nina!
> >>
> >> Example:
> >> https://www.openstreetmap.org/way/952248376
> >>
> >> cheers
> >> Tom
> >> ----
> >> Canyoning? try http://ozultimate.com/canyoning
> >> Bushwalking? try http://bushwalkingnsw.com
> >>
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> >
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-- 
Warm Regards

Ewen Hill
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