Personally I think that Reading is cheating.

The outline that is called the railway station “building” includes the ticket 
halls, the bridge, and the platform surfaces to the extent that these stick out 
of the bridge area. I don’t agree with this - the last time I looked, a 
platform wasn’t a building; it is a platform. I would expect this to be a site 
relation - and in fact, Euston appears to be mapped that way, so it doesn’t 
look like I’m a million miles out with that thought.

Next, the individual “platforms" have been mapped as edges alongside the 
satellite-visible parts of the platform areas. The platforms in OSM don’t 
extend under the footbridge - when in reality they do. Again, at Euston the 
platforms are areas (split in half to allow tagging of each platform number). 
Yes the bridge at Reading is marked as a bridge, which it allows it to go over 
the tracks. But it really is a bridge at Reading. At Gatwick it is a whole 
building over the tracks.

So, to me, Reading looks like it has been mapped for the renderer, rather than 
representing what is physically on the ground.

Regards
Stuart


------------------------------------
Stuart Reynolds
for traveline south east & anglia



On 21 Jan 2016, at 10:34, Richard Mann 
<richard.mann.westoxf...@gmail.com<mailto:richard.mann.westoxf...@gmail.com>> 
wrote:

Compare Reading - are you mapping a roof or a groundplan, or a pedestrian 
bridge?

On Thu, Jan 21, 2016 at 10:12 AM, Stuart Reynolds 
<stu...@travelinesoutheast.org.uk<mailto:stu...@travelinesoutheast.org.uk>> 
wrote:
Hi,

I made a number of adjustments around the transport terminus at Gatwick Airport 
South Terminal yesterday. When this was first mapped, what is actually three 
buildings (the railway station, the covered travelators from the bus station & 
car parks, and the southern stairs from the railway platforms) were all mapped 
as one building, and the platforms were “inserts” into the gaps rather than 
being the continuous entities that they are. So I have separated those all out, 
and made the platforms a continuous block. I also added internal escalators and 
travelators, although that is immaterial to the question that I’m about to ask.

The buildings are all mapped as layer=1, and the platforms without any layer 
tag (which should default them to layer=0, AFAIK). So why are the platforms and 
rail tracks (which I haven’t touched) been rendered over the buildings, rather 
than under them?

See http://www.openstreetmap.org/#map=18/51.15634/-0.16124

Thanks
Stuart


------------------------------------
Stuart Reynolds
for traveline south east & anglia




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