Proposed features/contour

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Status: Abandoned (inactive)
Proposed by: ab545
Tagging: contour=int (representing height above sea level)
Applies to: way, area
Rendered as: thin brown line
Drafted on:
Proposed on: 2008-10-14
RFC start: *
Vote start: *
Vote end: *


Add contour lines representing height above or below sea level. Perhaps at ten meter (height) intervals like on an ordnance survey map.


It is a useful piece of scientific and geographical data. Uses: People planning walks or bike rides could avoid tiring inclines. Route planning algorithms could even take this into account. It could be used if ever a visualisation program wished to implement a 3D view.




I think a simple contour=number is the simplest way. An alternative would be to tag them as natural=contour then add a separate height=number value to them. Though to me that seems unnecessary.

Applies to

Circular way. It's not really an area because a contour defines a line not the area inside the line.


A thin brown line is how it displays on most maps. The heights should not appear on every line (that would be cluttered) but every few lines depending on the zoom level. Alternatively of course the view could be 3D.

See also

Contours page, for the many automated methods of generating these


Discussions page.

Maybe just ele=* applied to ways? In abscense of any other tags it may be rendered as a contour line. --Vovanium 22:12, 7 August 2009 (UTC)