key:prominence
Status:	Abandoned (inactive)
Proposed by:	hjelmis
Tagging:	prominence=*
Applies to:	node
Definition:	Topographic prominence of peak in meters
Rendered as:
Draft start:	2009-09-28
RFC start:	2009-09-29
Vote start:
Vote end:

Topographic prominence of a natural=peak in meters.

Contents 1 Rationale 2 Example 3 Further extension 4 Further Discussion

Rationale

Prominence (or prime factor ) is a objective measurement of how independent/important a peak is. "Peak baggers" are often very concerned with this number.

Prominence can be used to select peaks for rendering. A scheme which can work both for Denmark and Switzerland, would be: If too many peaks to render within a area at a zoomlevel, select the ones with highest prominence. Different thresholds should be used for peak symbol only, versus render peak with the name.

Example

• name= Mont Blanc
• natural= peak
• note= any one know the quality of coordinates ?
• name:it= Monte Bianco
• ele= 4810.90
• prominence= 4695
• name:fr= Mont Blanc

Further extension

A Relation peak:prominence could be define to relate a peak to its "key col" and to its "parent peak"?

Further Discussion

To the talk page please.