[Tagging] key damage and HOT

[Joseph Eisenberg]

It is best to use ruins:building= because a ruin is not a building in the
usual sense or in how the tag “building” is used in Openstreetmap.

General, all values of “building=“ have an intact roof.

If the roof of a structure has collapsed, it would be misleading to use the
key “building=“

-Joseph Eisenberg

On Fri, Feb 7, 2020 at 9:12 AM Andrew Harvey <andrew.harvey4 at gmail.com>
wrote:

> On Fri, 7 Feb 2020 at 10:47, Paul Allen <pla16021 at gmail.com> wrote:
>
>> On Thu, 6 Feb 2020 at 23:29, Andrew Harvey <andrew.harvey4 at gmail.com>
>> wrote:
>>
>>>
>>> I disagree with the whole premise. To me both building=yes+ruins=yes and
>>> ruins:building=yes means exactly the same thing and should be interpreted
>>> the same way.
>>>
>>
>> But they AREN'T.  The way you suggested was the correct way to tag a
>> ruined
>> building DOES NOT RENDER.  And you never even noticed, you just made a
>> blind assumption and told me how to do things based upon your incorrect
>> assumption.
>>
>
> To be honest I don't really mind if it renders on the default renderer or
> not, I care what the data says. People can and do make their own maps, if I
> want a map to show ruined buildings to capture all the data at the moment
> you need to check for both those tags.
>
>
>>
>> You can't say on one is when you want it rendered on the map and one to
>>> hide it. That's essentially a render=yes/no tag, which I don't think has
>>> any place in OSM.
>>>
>>
>> Really?  Explain to me the difference between building=yes +
>> disused:amenity=place_of_worship and building=yes.  Both
>> render as buildings.  Neither render as a place of worship.  One has
>> additional
>> information that is of use to people.  If you have your way, I  can and
>> WILL
>> decide whether or not something should render as a place of worship by the
>> presence or absence of amenity=place_of_worship and that tagging will be
>> entirely correct and match reality on the ground.  You just want me to
>> tag in a way that loses information.  I see no merit in that.
>>
>
> Both mean there is an intact building there, in one case it's a place of
> worship that's closed down/not operating but still has some evidence on the
> ground that it's a place of worship. The other case, it says nothing about
> place_of_worship.
>
> Okay so I'll ask you a question then, on the ground what's the difference
> between building=yes+ruins=yes and ruins:building=yes.
>
> In what on the ground situation would you have one render but the other
> one not render?
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