change symbol for railway=subway_entrance

[nebulon42]

Fixes #851, implements part of #1165.

before (click on images to see full preview)

after

issues:
subway entrances that are elevators are depicted with stairs (see http://www.openstreetmap.org/node/2703842678)

[matkoniecz]

Neither old nor new symbol works for me. Old one is clearly somebody walking what is not helpful and not representing anything. New one is not looking like stairs (also at full sized image) - it is rectangle with line.

Maybe just stairs would work? Or arrow pointed toward bottom (I am not really convinced that this is a good idea)?

[daganzdaanda]

Could you show the new symbol in train-blue?
I think the idea works, if it is connected visually to other public transport features.
Or maybe it needs a filled rectangle to be more visible, or a tunnel-shape instead of a rectangle?

Maybe just stairs would work?

I've seen street signs where "stairs" stand for a pedestrian underpass. We probably don't need an icon for these, since we are rendering stairs and tunnels. So maybe it could work for subway entrance, too.

[nebulon42]

@daganzdaanda See #851 (comment).

[nebulon42]

@matkoniecz Right, the stairs are barely visible, but visible. I still think the proposed icon is an improvement. Other opinions/ideas?

[pnorman]

this should probably be transit blue

[kocio-pl]

Could we see how it looks now in blue on the map?

[nebulon42]

Some color variations:

grey

station color

station text color

transportation color

[kocio-pl]

I see your examples in this order:

1. transportation (lighter than current, but still visible enough for this object - good for me)
2. grey
3. station
4. station text (map looks too much like a blue-red tonal rainbow =} )

[nebulon42]

Any other opinions on different colours?

[pnorman]

transportation colour.

[nebulon42]

Alternatively we could use a generic entrance icon:

[kocio-pl]

Nice idea.

[nebulon42]

I presented two options that would work more or less and are clearly improvements over the current icon. A decision on this would be great.

[matthijsmelissen]

I will get back to this as soon as possible.

[kocio-pl]

I think general entrance version is even better, since it's more clean and readable (which is important given it's smaller than most icons) and if we decide to render plain building entrances, they'll be probably black, so the distinction will be clear.

BTW: I think we can make elevator icon to be in the same style, just with arrows up and down.

[daganzdaanda]

Yeah, the general entrance with arrow is the better idea. The stairs are hard to decipher at that size and with the busy backgrounds. You probably already tried this, but maybe the arrow could point down 45° to symbolize entrance to the underground?

[kocio-pl]

Nice idea.

[matkoniecz]

Generic entrance works better for me.

[nebulon42]

The consensus seems to be the generic entrance icon. Updated.
For other PRs that might want to use a generic entrance icon, it is now available.