[Tagging] Handle with care

[André Pirard]

On 2015-09-24 17:32, Kotya Karapetyan wrote :
> Hi André, all,
>
> Shall we discuss an "object_warning" tag? To begin with, it will
> simply contain information. Editors can also choose to show it when
> the tagged object is about to be changed.
Gladly (of course), I suppose that all those discussions were meant to
come to a concrete result.
But beware that it is not "object_warning" that seems to protect the
whole element.
It is
<keyname>:warning=<text>
which acts only when that key is changed.
geometry:warning=<text>  to protect the coordinates of the element
name:warning=<text>  to protect its name.
Those tags do not warn against changing other tags.

But it's a good implicit remark that the whole object could be
protected, including from deletion.
warning=<text>

"about to be changed" is not "about to be uploaded" (needing to identify
several elements" but when the user clicks for changing (normally) one
element.

Cheers

André.





>
> Kind regards,
> Kotya
>
>
>
>
>
> On Fri, Sep 18, 2015 at 12:53 AM, André Pirard
> <a.pirard.papou at gmail.com <mailto:a.pirard.papou at gmail.com>> wrote:
>
>     On 2015-09-17 18:02, Kotya Karapetyan wrote :
>>     Hi André,
>>
>>     I don't know why your text was removed. 
>>
>>     > It would produce a message saying something like:  
>>     > "The coordinates you are trying to change are accurate to 25 cm.  
>>     > You probably shouldn't change this tag, certainly not with GPS data.  
>>     > Are you certain that you will not destroy valuable data and do you want to continue?".
>>     > And if he replies "no", his attempt is canceled.
>>
>>     I like this approach. I wonder if it is technically feasible.
>     Forget about my bad examples and the eagerness to pick them.
>     Here is the original text.
>>>     ... Despite a "don't touch" note explaining why not, a good soul
>>>     passes, not reading note and makes a "correction".
>>>     What is needed here is an "are you sure?" tag named such as 
>>>     [keyname:]warning="text" that the map editing softwate  uses any
>>>     time a mapper wants to change that keyname's value  to display
>>>     the message and ask for a confirmation (by the tag, at the time
>>>     he tries to change it, not when he tries to upload a dozen of
>>>     such changes).
>>>     <text>="Reasons why you shouldn't change that tag.  Do you
>>>     really want to change it?"
>>>     Replying "no" cancels the attempt.
>>>     Or should it be [keyname:]note:warn="text" and spare another
>>>     wiki page?
>>>     keyname can be "geometry" as in source:geometry.
>>>     Et voilà.  An all-purpose simple guardrail, a small update to
>>>     the wiki and passing the word to the editors.
>>
>>     My point was that to make it generic may be more difficult than
>>     creating a very specific tag/function for survey-based data.
>     IMHO it may be simpler that some specific implementations and
>     certainly when their numbers reaches 2.
>     The answer will be given by JOSM et al.
>     It doesn't address "mechanical" updates, but the persons doing
>     them are supposed to know what they're doing, aren't they?
>>     And I didn't understand the benefit for your other examples. But
>>     otherwise I support it.
>     Those examples forgotten, other voices are needed, the wiki update
>     has almost been written.
>>
>>     Cheers,
>>     Kotya
>     General tip: Kotya, do you know that you can have your
>     kotya.lists at gmail.com <mailto:kotya.lists at gmail.com> account use
>     filters to store messages in by-the-list folders and access those
>     folders using IMAP with software like Thunderbird and do things
>     like answering to ancient mail?
>
>     Cheers
>
>     André.
>
>
>

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