[OHM] temporal data in the OHM sandbox

[Erik Johansson]

I don't know if you use life_cycle=* wouldn't that mean you have to
create a new building every time you want to change the buildings
use. That would mean a need to track things like "this is way #####2
the same building as in the deleted way #####1"

The suggestion further down on that page seems to be more like what
I'm about to do.
http://wiki.openstreetmap.org/wiki/Comparison_of_life_cycle_concepts#Related_concepts



On Thu, May 16, 2013 at 4:41 PM, Robert Warren
<warren at muninn-project.org> wrote:
> Erik,
>
> I've been using the start and end dates as well. I would prefer we use something like life_cycle [1] for structure status since this will better track what structure is in what state. Today's ruins are yesterday's town hall.
>
> Rendering is something we still need to work on. Suggest more tagging data is better than less tagging data - it's easier to delete superfluous data later rather than re-creating it.
>
> rhw
>
>
> [1] http://wiki.openstreetmap.org/wiki/Comparison_of_life_cycle_concepts#life_cycle_.3D_.3Cstatus.3E
>
>
> On 2013-05-16, at 8:00 AM, historic-request at openstreetmap.org wrote:
>
>>
>> Message: 3
>> Date: Wed, 15 May 2013 23:55:57 +0200
>> From: Erik Johansson <erjohan at gmail.com>
>> To: Marcus Koenig <einschmelzer at hotmail.com>
>> Cc: "historic at openstreetmap.org" <historic at openstreetmap.org>
>> Subject: Re: [OHM] temporal data in the OHM sandbox
>> Message-ID:
>>       <CAKs=k7q9Zvx8A9d1kY6MBoq+xy2gRDFphq9MqB9VRfNpkjnQHg at mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> Hi Marcus.
>>
>> I don't know how other people use it, and I've not uploaded my data
>> because of many small problems with historic mapping. But I have a
>> handfull of historic buildings in Stockholm that I will upload
>> sometime in the future.
>>
>> For the buildings I use
>> start_date=1790
>> end_date=1810
>>
>> http://wiki.openstreetmap.org/wiki/Key:start_date
>>
>> I also use free form tagging, these need to be more formal.
>> note="just gone from map"
>> note="demolished"
>> note="burned down"
>>
>> I do not map changes to the buildings, e.g.
>> * reconstructions and additions.
>> * church => night club
>> * relocations
>>
>> I've tried to map name changes, But it's clunky.
>> name:1790="Fr?mans krog"
>>
>> I find it hard to verify facts, I should have added source on every
>> feature I mapped, I've tried source=, but these tags are sometimes out
>> of sync with the data.
>> source="map xx from 1624"
>> source:url=*
>>
>> It will probably take a while before I upload/share my meager data
>> collection, mostly because of it being hard work with all sources,
>> projections and unexplained peculiarities.
>>
>> I have no renderers for the data yet, except some manual one year
>> snapshot with either JOSM or postgres + openlayers.
>>
>> On Wed, May 15, 2013 at 6:50 PM, Marcus Koenig <einschmelzer at hotmail.com> wrote:
>>> Hi,
>>>
>>> I'm very interested in the OHM project and I would like to contribute data
>>> for Mainz, Germany. In the long run I would like to create a map of the city
>>> before the destructions during WW2, but also of earlier periods. I have had
>>> a look at the OHM Sandbox, but I couldn't find out where the time dimension
>>> comes in. How do you tag and display temporal information? The map would
>>> have to change with time settings - eventually? I'd really appreciate if
>>> anyone could give me a short insight into the current state of the project.
>>>
>>> Best regards
>>>
>>> Marcus K?nig
>>>
>>>
>>> _______________________________________________
>>> Historic mailing list
>>> Historic at openstreetmap.org
>>> http://lists.openstreetmap.org/listinfo/historic
>>>
>>
>>
>>
>> --
>> /emj
>



-- 
/emj