Re: [Tagging] Using highway=footway as an area

2014-08-10 Thread Martin Koppenhoefer


Il giorno 10/ago/2014, alle ore 16:53, SomeoneElse 
 ha scritto:

>> Hi
>> 
>> http://www.openstreetmap.org/#map=19/51.49428/-0.12149
>> 
>> I've noticed highway=footway is being used as an area across Lambeth Bridge: 
>> North side as a closed polygon; South side within a relation. (checking the 
>> history previously they were both highway=pedestrian.
> 
> Regardless of whether it's mapped as a footway or as a pedestrian area it 
> looks like a fairly extreme case of "mapping for the renderer with no thought 
> given to map usability".



There could be a Bridge polygon for instance to unify the ways on the bridge 



Cheers,
Martin
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Re: [Tagging] Using highway=footway as an area

2014-08-10 Thread SomeoneElse

On 09/08/2014 17:06, Dave F. wrote:

Hi

http://www.openstreetmap.org/#map=19/51.49428/-0.12149

I've noticed highway=footway is being used as an area across Lambeth 
Bridge: North side as a closed polygon; South side within a relation. 
(checking the history previously they were both highway=pedestrian.


Regardless of whether it's mapped as a footway or as a pedestrian area 
it looks like a fairly extreme case of "mapping for the renderer with no 
thought given to map usability".  If you look in the area of this node:


http://www.openstreetmap.org/node/2622468074

The data as it exists now suggests that there's no access west from this 
"footway island" to the pedestrian crossing across Millbank, or actually 
anywhere on the west bank of the Thames.  This pedestrian island 
functionally duplicates the "real footway" 
http://www.openstreetmap.org/way/256600109 (from which you can get north 
and south, though not west)


I'd be in favour of a similar linear / area split as there is with 
rivers = "waterway=river" - is the line of the river for e.g. routing 
purposes; "waterway=riverbank"the outline of the bank which can be used 
for rendering but ignored for routing.


Cheers,
Andy


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Re: [Tagging] Using highway=footway as an area

2014-08-10 Thread fly
Am 09.08.2014 18:06, schrieb Dave F.:
> Hi
> 
> http://www.openstreetmap.org/#map=19/51.49428/-0.12149
> 
> I've noticed highway=footway is being used as an area across Lambeth
> Bridge: North side as a closed polygon; South side within a relation.
> (checking the history previously they were both highway=pedestrian.
> 
> I thought that tag should be used linearly only, as per the wiki page:
> http://wiki.openstreetmap.org/wiki/Footway
> & areas should be highway=pedestrian. You'll notice though that mapnik
> renders them the same way. Is that part of the recent carto upgrade?
> 
> To me, having two different tags (footway, pedestrian) to represent the
> same type of object is confusing, as is using the same tag (footway) to
> represent two different types of object.

Mmh, I tend to differ between an area signed as pedestrian and a square
without any sign or signs for foot, bicycle and other modes.

I also met highway=path + area=yes.

In general highway=pedestrian is often interpreted wrong, especially if
lots of special access condition are tag. At least for bicycle this is
less problematic if we are using path or footway.

Why do we use highway=pedestrians at all instead of footway or path as
long as it is not explicitly signed ?

Is there any problem with interpreting all three values with area=yes as
equal or maybe even consider them a bit different ?

cu fly


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Re: [Tagging] Using highway=footway as an area

2014-08-09 Thread Matthijs Melissen
On 9 August 2014 17:06, Dave F.  wrote:
> You'll notice though that mapnik
> renders them the same way. Is that part of the recent carto upgrade?

No, the rendering hasn't been changed in this respect. See
http://bl.ocks.org/tyrasd/raw/6164696/#18.00/51.49424/-0.12091.

-- Matthijs

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[Tagging] Using highway=footway as an area

2014-08-09 Thread Dave F.

Hi

http://www.openstreetmap.org/#map=19/51.49428/-0.12149

I've noticed highway=footway is being used as an area across Lambeth 
Bridge: North side as a closed polygon; South side within a relation. 
(checking the history previously they were both highway=pedestrian.


I thought that tag should be used linearly only, as per the wiki page:
http://wiki.openstreetmap.org/wiki/Footway
& areas should be highway=pedestrian. You'll notice though that mapnik 
renders them the same way. Is that part of the recent carto upgrade?


To me, having two different tags (footway, pedestrian) to represent the 
same type of object is confusing, as is using the same tag (footway) to 
represent two different types of object.


Any idea why these values have been changed?

Cheers
Dave F.



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