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Rendering waterway=drain as an area #3041

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openstreetmap-trac opened this issue Jul 23, 2021 · 4 comments
Closed

Rendering waterway=drain as an area #3041

openstreetmap-trac opened this issue Jul 23, 2021 · 4 comments
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Component: mapnik Priority: major Resolution: wontfix Type: enhancement

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Reporter: JohnSmith
[Submitted to the original trac issue database at 5.39pm, Tuesday, 8th June 2010]

Currently waterway=drain only renders as a way, it would be nice to also render any drain areas tagged as well, as many drains can be quite wide and these can now be mapped in detail from aerial imagery.

As for how they should render, not sure, might need to assume the default surface=grass and then render differently if drains are tagged with surface=concrete.
@openstreetmap-trac openstreetmap-trac self-assigned this Jul 23, 2021
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Author: steve8[at]mdx.ac.uk
[Added to the original trac issue at 7.41pm, Friday, 17th September 2010]

Can you give a URL/permalink of an example and I will have a look?

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Author: JohnSmith
[Added to the original trac issue at 7.56pm, Friday, 17th September 2010]

http://osm.org/go/ueGzDJQWV--

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Author: JohnSmith
[Added to the original trac issue at 7.57pm, Friday, 17th September 2010]

Same location, but aerial imagery:

http://www.nearmap.com/?ll=-27.19594,153.029997&z=19&t=h

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Author: Ldp
[Added to the original trac issue at 10.15pm, Wednesday, 16th March 2011]

waterway=drain is defined to be linear only.

You can use the combination of a linear waterway=drain + a natural=water around it to convey the true area of the drain. Similar to the way waterway=river (linear) + waterway=riverbank (area) work.

BTW: Did you change the tagging in that example area? The north-south bit of drain shows up wide enough.

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