[Tagging] RENDER

[André Pirard]

On 2014-08-15 16:31, Peter Wendorff wrote :
> not a good idea IMHO.
> 1) what is the feature this tag should refer to? Consider a polygon that
> is tagged as a building (building=yes) and a shop (shop=supermarked) and
> a Walmart (operator=WalMart), and the mapper added RENDER=blue. What is
> it that should be rendered blue? This object? Any supermarket? any
> Walmart? 
I don't understand what you say very well. "added RENDER" to what?
As I say RENDER would typically apply to "an area", to one object, not
to "any".
That is, you have building=yes + render=blue and that building gets blue.

> Any building? How should any rendering decide if the default
> rendering should be used or the one defined by the tag you propose?
Did you read my sentence:
>> As soon as rendering is defined for an element, it is used instead
>> and RENDER is normally ignored.
?
a.s.o. ...

André.


> 2) I want to get Walmarts shown on the map in a different color, thus
> all Walmarts I want to see in the map get
> RENDER={mycolor-which-is-not-used-yet-in-the-zoomlevel-I'm-interested-in}.
> Now the stylesheet maintainer uses that color for another object -
> conflict, damn, fail.
> 3) I want to get Walmarts rendered pink on osm-carto, green on HOT,
> orange on the cyclemap - what should go to the render-tag (even if the
> styles would follow your proposal?
>
> The only benefit I see in this proposal is just what you said: people
> would stop tagging stuff just to get their map to display it the way
> they want; but how do you ensure they don't tag stuff to be rendered
> with the same style? How do you ensure the map stays usable?
>
> regards
> Peter
>
> Am 15.08.2014 um 16:12 schrieb André Pirard:
>> Hi,
>>
>> It's a well known fact that many people complain to tag in vain because
>> what they tag doesn't show on the map (e.g. mini-golf vs tennis pitch),
>> because they're told to open a rendering ticket which replies that only
>> official tags are supported, and because they open a vote for an
>> official tag and nobody signs.
>> As a result they are accused of "tagging for the renderer" instead of
>> 'being forced to tag for the renderer".
>>
>> The solution is simple however.  A RENDER tag that, typically, would
>> assign a color to an area.
>> I'll let the rendering specialists define what else it can do.
>> ⚠ ⚠ ⚠ RENDER only requests *by default* rendering.
>> As soon as rendering is defined for an element, it is used instead and
>> RENDER is normally ignored.
>>
>> For a better map,
>>
>> André.
>>

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