[talk-au] Adding polygons of the aerodromes

[Nemanja Bračko]

Thanks everyone for replying to this thread.

@Berjo, as I've noted in my first email we do not have any other signals at
the moment except imagery, and except for NSW where we have a base map.

@others, is it okay to make a polygon when we can recognize tarmac on a
airstrip and when we can clearly see start and the end of the runway
(zebras at the beginning and at the end)? Or if that 'airport' has official
code (e.g. ICAO)?

Thanks,
Nemanja

Sent from my phone

On Thu, Dec 26, 2019, 06:42 John Berkers <berjo at ozemail.com.au> wrote:

> Hi Nemanja,
>
> It is worth noting that most airports/aerodromes in regional areas of
> Australia do not have control towers as they are centrally operated by Air
> Services Australia from one of 3 sites using remote cameras and such.  The
> presence or absence of a control tower should therefore not be the criteria
> on which to base whether it should be mapped.  While difficult to tell from
> Aerial imagery, there does appear to be a small building near the strip.
>
> Where feasible, adding the airport designations and runway numbers would
> be advantageous.  Is there a permissible dataset that contains this
> information?
>
> Digging into the listed source tag (ourairports.com) shows that they use
> OSM as the map layer, and drilling down to a chart takes you to SkyVector
> who also use OSM for map data (among other sources).
>
> On Wed, Dec 25, 2019 at 10:28 PM Nemanja Bracko (E-Search) via Talk-au <
> talk-au at openstreetmap.org> wrote:
>
>> Hi everyone,
>>
>>
>>
>> We would like to manually add polygons around airports in whole
>> Australia. We have added polygons for very few airports that were marked
>> just with a single node.
>>
>>
>>
>> By using THIS <https://overpass-turbo.eu/s/Pe6> OverPass-Turbo link, you
>> can see that there are nearly 1,200 airports that needs to be inspected.
>>
>> We could recognize that other map competitors have properly marked most
>> of these airports as polygons.
>>
>>
>>
>> Anyway, we have doubt should we add polygons in the following
>> situation(s):
>>
>> https://www.openstreetmap.org/way/73310214
>>
>>
>>
>> There are no control tower nor any other buildings. It has a proper name
>> Kulin Airport @-32.6721992, 118.1689987.
>>
>> Should we add a polygon in such cases?
>>
>>
>>
>> Please note that *we won’t add any polygons* if the
>> airport/airstrip/runway is on the water.
>>
>>
>>
>> We believe that there is no need to preserve both way and a node of the
>> same feature. Especially because that node is somewhere at the center of
>> the airport and it doesn’t represent entry of the airport area or entry of
>> some building. Example should be Hamilton Airport @
>> https://www.openstreetmap.org/node/407705915. We would merge existing
>> node of the airport in to polygon of the same polygon and we would remove
>> tags from the merged node.
>>
>>
>>
>> If we are adding new polygon, we would preserve existing airport node by
>> keeping this node as a part of the new polygon.
>>
>>
>>
>> Thanks in advance for the answers!
>>
>>
>>
>> Merry Christmas and Happy New Year,
>>
>> Nemanja
>>
>>
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