Tag:natural=cliff: Difference between revisions
(→Status: add note about man_made=embankment) |
(Undo revision 106073. man_made=embankment is not is use (4x in planet.osm). Did you mean embankment=yes (680x in planet.osm)?) |
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For a linear way, the top of the cliff should be to the left of the cliff, and the bottom on the right side. This would allow tagging a coastal cliff as '''natural=coastline;cliff''', provided the renderers understand multiple values. |
For a linear way, the top of the cliff should be to the left of the cliff, and the bottom on the right side. This would allow tagging a coastal cliff as '''natural=coastline;cliff''', provided the renderers understand multiple values. |
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See also '''man_made=embankment''', which is in use but not on map features, which shows as grey line with smaller ticks and comes in at later zoom. Again top of embankment is to left (of way direction). |
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== Rendering == |
== Rendering == |
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Revision as of 16:38, 31 May 2008
 natural = cliff
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| Description |
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Used to tag a natural cliff.  
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| Rendering in OSM Carto |
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| Group: natural |
| Used on these elements |
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| Useful combination |
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| See also |
Status: approved
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| Tools for this tag |
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Status
natural=cliff is now on Map Features. It was also extended to include linear ways 
in addition to Nodes and Areas 
. The proposal is archived at Tag:natural=cliff/Archive/Proposal.
For a linear way, the top of the cliff should be to the left of the cliff, and the bottom on the right side. This would allow tagging a coastal cliff as natural=coastline;cliff, provided the renderers understand multiple values.
Rendering
Ways tagged natural=cliff have been added to mapnik, and are rendered as a line with small ticks on it, see example.
Stannage edge is shown on old Ordnance Survey maps as a kind of dotty line. Newer OS maps show scraggly rocky penstrokes on the downward side.
double line, cliff-top solid, cliff-bottom broken.
Open questions
Other 'cliff' definition questions
Two other things come to my mind:
- To make this tag more useful, I think we should allow to use it not only for natural cliffs, but also for man-made cliffs. Of course we could also introduce man-made=cliff, but in my opinion, make things simple and usable, instead of reaching for 100% correctness in small details -> natural=cliff should be enough.
- Another question arises: Is it important for a cliff that you can see the naked rock, without soil and plants on it, or can a very steep forest floor also qualify as a cliff? In my opinion, every place that is too steep to be walked on should definitely be in a map. If you don't think this can be called a cliff, we really need another tag for this kind of map feature! --Brian Schimmel 13:37, 14 January 2008 (UTC)
- barrier=slope? natural=slope?