Hi Martin,
These are challenging to spot and hard to tag correctly without local
knowledge I just discovered.
http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dcommunications_tower
I usually find towers by seeing the shadow they cast, that is the big
indicator to me.
Here are a few examples in the region:
https://www.openstreetmap.org/#map=19/-21.90198/166.072485
If you look very carefully at the shadow you can see the microwave
transceiver drums in the shadow. I would guess that is what helped the
person identify this one as a "communications" tower specifically.
----------------------------
https://www.openstreetmap.org/#map=19/-20.748846/167.262194
That one again, shows the shadow being a pretty big factor. And it also
show a typical service road and pad. I do not know how the mapper knew
it was a communications tower.
------------------------------
https://www.openstreetmap.org/#map=19/14.977132/120.52743
Shadow and microwave drums visible
-----------------------------------
https://www.openstreetmap.org/#map=20/15.011183/120.532604
Shadow and service area fenced off.
----------------------------------
https://www.openstreetmap.org/#map=19/15.097711/120.611481
A nice big TV transmission tower.
I hope those help!
Cheers,
Blake
On 3/15/2015 11:37 AM, spatialbits wrote:
Hi hotties,
as part of tasks #944/943 (Vanuatu) mapping of Communication towers is
requested.
Could someone point me to an example in the imagery (e.g. lat/lon), so I
get an idea on what to look for.
Thanks.
Martin
_______________________________________________
HOT mailing list
[email protected]
https://lists.openstreetmap.org/listinfo/hot
_______________________________________________
HOT mailing list
[email protected]
https://lists.openstreetmap.org/listinfo/hot
