Opened 10 years ago

Closed 6 years ago

#3198 closed enhancement (wontfix)

[water] Render waterway flow

Reported by: NE2 Owned by: mapnik-team@…
Priority: minor Milestone:
Component: mapnik Version:
Keywords: Cc: pnorman


Apparently a waterway should be drawn in the direction of flow, and tagging it oneway=yes offends baby Buddha. So let's render the direction of flow and see how many are mapped "incorrectly" by people who didn't know about this convention.

Change History (7)

comment:1 Changed 10 years ago by NE2

Component: adminmapnik
Owner: changed from Tom Hughes to mapnik-team@…

comment:2 Changed 10 years ago by Ldp

Priority: majorminor
Type: defectenhancement

comment:3 Changed 10 years ago by Pieren

This convention is very old and probably exists since the beginning of waterways on the wiki. Unfortunately some people noticed an arrow on mapnik when the oneway tag was added on waterways and decided to use it to indicate the water flow. This is a good example of "tagging for the renderer" since the tag is originally an access tag for roads which can be also used on waterways where boats have to nagivate in oneway direction.

comment:4 Changed 9 years ago by Ldp

We will certainly not implicitly render flow direction solely based on the OSM way direction. Flow isn't always that predictable, and can even reverse, due to tides or man made influences (locks for example).

I've seen mention of an explicit flow direction tag. What was that one again?

comment:5 Changed 9 years ago by pnorman

Cc: pnorman added

comment:6 Changed 6 years ago by math1985

Summary: Render waterway flow[water] Render waterway flow

comment:7 Changed 6 years ago by math1985

Resolution: wontfix
Status: newclosed

Closed per reasons given by Ldp.

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