[Tagging] tagging for decaying features

[Warin]

On 03-Jan-18 12:38 PM, Andrew Davidson wrote:
>
>
> On 03/01/18 11:45, Kevin Kenny wrote:
>>
>> 'Razed' is an English synonym for 'demolished.'
>> 'Raised', on the other hand is 'lifted up', and can be used to mean 
>> 'built.'
>
> I think you'll find that this is just a spelling error by the OP.
Yes, apologies for that.
>
>>
>> I don't understand what the difference between 'razed' (if such a beast
>> exists) and 'demolished' is supposed to be. 
>

There are subtle differences. And I don't think these have a place in OSM.

----------------------- So OSM decaying things - with decisions leading 
to the next category

where something has ceased being used (note, observation and judgement 
required, fairly easy);
_disused_: -
where putting it back into service requires substantial work (note, 
observation and judgement required)
_abandoned:_
where restoration is uneconomic (note, observation and judgement required)
_ruin/ruins/ruined:_ (ruined matches the tense of the above tags so 
would make sense that way)
where the feature no longer exists, there maybe traces, but few of them. 
(note, observation and judgement required though this is fairly easy)
_demolished/removed/was/destroyed/razed/gone/past/former_  - all the 
same thing as far as results on the ground - the feature no longer 
exists. So why the need to signify the method? In one word non-existent 
- and that might be the best tag to use?
Some want to put these in to try and stop additions of things that are 
not there e.g. a building in satellite imagery that has been demolished. 
So 'non_existent:' might be the best to hope for.

 From the wiki page https://wiki.openstreetmap.org/wiki/Lifecycle_prefix

I disagree with the use of this for life cycle;

historic:  used for things that are historic. Being historic does not 
imply the state of repair, use or where they are in their life cycle.




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