[OSM-talk] [HOT] A tool for picking up settlements tagged as a single building?

[john whelan]

areasize:300- works quite well.  I picked up nine of them.  You get a fair
amount of large buildings mixed in but its doable with the todo list
plugin.  The maesurement tool helps as well.

Thanks John

On 26 March 2017 at 02:04, Jo <winfixit at gmail.com> wrote:

> JOSM comes with a measurement plugin :-)
>
> I drew a square somewhere in Africa with sides of about 100m and the area
> is about 10000m2.
>
> For giggles, I then grabbed it and dropped it in Europe. Now the
> circumference is 255m, so one side 65m and the area became 4047 square
> meters.
>
> Cheers, and hurray for JOSM and its incredible functionality!
>
> Polyglot
>
> 2017-03-26 1:51 GMT+01:00 john whelan <jwhelan0112 at gmail.com>:
>
>> I'll need to play around but by using building followed by remove addr,
>> name etc I can start to pick them out.  What exactly is areasize measured
>> in?How can I determine an areasize?
>>
>> Thanks John
>>
>> On 25 March 2017 at 20:05, Jo <winfixit at gmail.com> wrote:
>>
>>> Hi John,
>>>
>>> When I first saw your message, I looked into Overpass API, but no luck.
>>> In JOSM areasize would definitely work. You'll have to find a sweetspot
>>> around 100-
>>>
>>> so
>>>
>>> building areasize:100-
>>>
>>> or possibly 500 or 1000.
>>>
>>> Polyglot
>>>
>>> 2017-03-25 19:34 GMT+01:00 john whelan <jwhelan0112 at gmail.com>:
>>>
>>>> Probably what I'm after is something that I can load up a chunk of map
>>>> at a time say a quarter of an African country from the daily dump in JOSM
>>>> then a selection based on building=yes with a certain minimum size would
>>>> areasize work for that?  Then I can use the todo list to check them one at
>>>> a time.
>>>>
>>>> What sort of value would I drop into areasize?  Or could I get a sample
>>>> size from <crtl>i ?
>>>>
>>>> Thanks John
>>>>
>>>> On 25 March 2017 at 13:43, Pierre Béland <pierzenh at yahoo.fr> wrote:
>>>>
>>>>> Hi John,
>>>>>
>>>>> The OSM Changeset Analyzer let's select bbox and option parameters
>>>>> including big building. To test if it provides too many positive answers.
>>>>> There could be an other option for very big buildings??
>>>>>
>>>>> example with reason 34 Large buildings
>>>>> http://osmcha.mapbox.com/?bbox=9.272%2C-13.496%2C43.901%2C6.
>>>>> 315&is_suspect=False&is_whitelisted=True&checked=All&reasons=34
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Pierre
>>>>>
>>>>>
>>>>> ------------------------------
>>>>> *De :* john whelan <jwhelan0112 at gmail.com>
>>>>> *À :* OpenStreetMap talk mailing list <talk at openstreetmap.org>
>>>>> *Cc :* "hot at openstreetmap.org" <hot at openstreetmap.org>
>>>>> *Envoyé le :* samedi 25 mars 2017 13h28
>>>>> *Objet :* [OSM-talk] A tool for picking up settlements tagged as a
>>>>> single building?
>>>>>
>>>>> It's something I've noticed in Africa so its probably not putting new
>>>>> mappers through a month's training first but many villages have been mapped
>>>>> but tagged as a single building with building=yes.
>>>>>
>>>>> They aren't grouped together but rural Africa doesn't have that many
>>>>> large foot print buildings so it should be possible to pick them out based
>>>>> on location and size.
>>>>>
>>>>> Any thoughts on how to pick them out?
>>>>>
>>>>> Thanks John
>>>>> _______________________________________________
>>>>> talk mailing list
>>>>> talk at openstreetmap.org
>>>>> https://lists.openstreetmap.org/listinfo/talk
>>>>>
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
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>>>> https://lists.openstreetmap.org/listinfo/hot
>>>>
>>>>
>>>
>>
>
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