Proposed features/capital

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capital
Status: Draft (under way)
Proposed by: *
Tagging: capital=yes/no
Applies to: node
Definition: The administration capital of a nation or a state
Rendered as: same as city or town, except rendered with a star

Proposal

To indicate the administrative importance of cities, the proposal is to make a `capital={country|province}` tag on city nodes for the respective capitals. A few capitals have previously been tagged as `is_in=capital_cities` or `is_in=capital cities`, but 1) the information is better represented as a separate tag and 2) very few capitals are marked that way, so there are probably less than 10 nodes worldwide to change.

The information in the capital tag is useful for rendering low zoom levels because the some capital cities have a population comparable to towns in other countries. There is no other information that indicates the importance of cities.

Notes on actual usage

The most established and agreed way to use this is attaching capital=yes to the country capital. This is de-facto standard.

There are also lots of people using capital=<lowest-admin-level-number> to flag places which serve as administrative centre for an administrative entity (see boundary=administrative for more info). This is a convenience method to map the administrative importance of a place. Many places that are administrative centers for bigger areas will at the same time also be administrative centers for lower, included administrative areas, in these cases it is suggested to only use the lowest admin_level number (the details for other administrative functions can be derived from administrative relations and the admin_centre role, the capital tag is merely there to provide an easy method for determining administrative importance).


Voting

Support. I'd say this is a good idea. -- DENelson83 20:40, 28 June 2012 (BST)

  • Support. 如果能和首都显示不同的话我支持,比如zoom比较小的时候首都显示但是省会不显示。但是过于小的国家使用这个会有些泛滥。And if we can show different words I capital support, such as when zoom is small, but does not show that the capital. But too small countries use it to be rampant.--Qa003qa003 (talk) 13:10, 19 April 2015 (UTC)