On 19/03/19 12:03, Nate Wessel wrote:
Dear tagging list,
I'd like to see if I can gather some consensus around allowing
bike-share stations (amenity=bicycle_rental) to be tagged as linear
features as well as points and polygons. There has been some related
discussion already on this topic both on the amenity=bicycle_rental
discussion page
<https://wiki.openstreetmap.org/wiki/Talk:Tag:amenity%3Dbicycle_rental#Mapping_as_a_.28linear.29_way.3F>,
and in the issues for the openstreetmap carto
<https://github.com/gravitystorm/openstreetmap-carto/issues/2711>
style sheet.
Currently a linear mapping is not supported by the standard OSM map
style, or the JOSM validation tools which issue a warning about ways
not being closed.
My case for linear mapping is as follows:
1) Many stations are very long and skinny, essentially running
parallel to other linear features like sidewalks. Some stations can be
upwards of 20 or 30 meters in length and no wider than a couple feet
(if empty) or the length of a bicycle (if full).
I'd map as if full .. this would be the area used by the bicycles and
not all ways available for other use.
2) Linear mapping is already allowed for bicycle parking and benches,
other street furniture amenities with similar dispositions.
3) Bike share stations typically have two sides (like a line, unlike a
polygon) with either one or both sides accepting bikes. Which way this
faces is a relevant fact and could easily tagged like entry=left or
something of that sort.
Um .. what is 'left' ? :0 And why do we need to map it? As cyclists can
see (I hope) then they should readily be able to determine the access path?
4) Kiosk locations seem relevant, especially for very long stations.
None of these are mapped yet as far as I know but it seems like these
would be best mapped as a node on a way rather than as a node inside a
polygon.
The case against as I see it is:
1) These can already be tagged as long polygons.
2) A linear mapping is not as well supported by current software.
Perhaps the bigger question here is: the vast majority of stations are
currently mapped as nodes. If these were to get expanded, with more
added detail/accuracy would we do better to move toward polygons or
lines or both?
Polygons are better than lines, has they more information and are more
consistent.
Some mappers may map a line at the bicycle fixing point, others might
map the line at the bicycle half width point and some others elsewhere.
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