[Tagging] New rag to draw node name with rotate angle

Dave F davefoxfac63 at btinternet.com
Sat Nov 10 15:21:35 UTC 2018



On 10/11/2018 15:08, Greg Troxel wrote:
> Dave F <davefoxfac63 at btinternet.com> writes:
>
>> On 10/11/2018 14:46, Greg Troxel wrote:
>>> Dave F <davefoxfac63 at btinternet.com> writes:
>>>
>>>> Every tag is for the renderer, otherwise all maps would be black lines
>>>> & dots. As your link clearly states:
>>>> /"Don't deliberately enter data *incorrectly* for the renderer"
>>>> /
>>>>
>>>> The tag 'layer' is purely to aid renderings.
>>> That's not true.  It represents things being above and below each other,
>> And is used solely by renders to distinguish what you said. However
>> 'Layer' provides no real world interpretation of height distance
>> between objects.
> It does not provide height, but it provides ordering.

...for the renderer. Who else do you think uses this data

>    Which is still
> real world data, just less granularity.
>
>>> In the case of tag saying what angle to draw something, that's a
>>> specific drawing instruction, and I don't think it belongs.
>> Along with an angle, a position tag for the label would be useful to
>> avoid annoyances where it renders outside the perimeter of
>> irregular.shaped polygons.
> So would saying that a particular object should be green.  Once you add
> specific drawing instructions, I don't see how to draw the line.

https://wiki.openstreetmap.org/wiki/Key:colour

but that doesn't make it compulsory. These meta tags are a *aid* or 
suggestion.

>
> Can this really not be computed by renderers?   It just seems like an
> optimization problem.




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