Zh-hant:Key:covered
| covered |
| 說明 |
|---|
| 表示一個物體被某種東西覆蓋的屬性。 |
| 組: Placement |
| 用於這些元素 |
| 已記載的值: 2 |
| 常用組合 |
| 参照 |
|
| 狀態：已批准 |
| 此標籤的工具 |
covered=* 常用於表示一個點狀、線狀或面狀物體被覆蓋。
covered=yes不同於公路或鐵路的tunnel=* ，它通常至少有一側是開放的。
另外，搭配 layer=* 是無意義的。
運用
使用此標籤：
- 在公路或鐵路中，人行道或水道被建築物或其他構造（部分）覆蓋，且不符合tunnel=*的定義（包含tunnel=building_passage）。
- 表示電力線、水管、排水道等設施位於狹窄的溝槽中，常有可移除或替換的蓋子，允許不需設置橋梁穿越，溝蓋通常可移除以便維護保養。
- 不適用於location=underground 的隱藏物體，例如具水泥頂蓋的隱藏式停車庫。
- 配合Tag:amenity=bicycle_parking標記具有遮雨棚的單車停車場。
勿使用此標籤：
Tagging
Ways passing through buildings should normally have the same (or none) layer as the building.
When used this way the building and the way should have shared nodes at the entry and exit points of the building. The way should be split at the entry and exit nodes and only the part covered by the building should be tagged with covered=yes.
covered=yes
For covered objects which are not an arcade or a colonnade.
covered=arcade
An arcade is a succession of arches, each counterthrusting the next, supported by columns or piers or a covered walk enclosed by a line of such arches on one or both sides.[1] Such ways should be tagged with covered=arcade. If the arcade is part of a building, the building and the way share the same node at the entry and exit points. The way is split at the entry and exit nodes and only the part covered by the building is tagged with covered=arcade The layer has to be the same as the building. So if the building doesn't have a layer tag, the way doesn't need one either. Use arcade:left=open or arcade:right=open to define which side of the way is open.
When arcade should not be used: It is not meant to be used for indoor mapping. The wall on one side is considered as an outer wall which can have entrances that lead into the building. For indoor mapping indoor=yes can be used. Also it is not meant to be used for simple roof overhangs or blind arcades.
covered=colonnade
Similar to arcades, but differ architecturally, a colonnade denotes a long sequence of columns joined by their entablature, often free-standing, or part of a building.[2] Such ways should be tagged with covered=colonnade. If part of a building, the building and the way share the same node at the entry and exit points. The way is split at the entry and exit nodes and only the part covered by the building is tagged with covered=colonnade The layer has to be the same as the building. So if the building doesn't have a layer tag, the way doesn't need one either. Use colonnade:left=open or colonnade:right=open to define which side of the way is open.
When colonnade should not be used: It is not meant to be used for indoor mapping. The wall on one side is considered as an outer wall which can have entrances that lead into the building. For indoor mapping indoor=yes can be used. Also it is not meant to be used for simple roof overhangs.
Examples
Additional Attributes
maxheight=* may also be associated with the covered way or area to indicate clearance.
Rationale
This section changed since the approval of this feature as a result of refinement of the definition of the layer=* tag.
While using the layer or level tags is the conventional means of showing that one object is above another there are numerous situations where this tags are inappropriate and can be misleading in the context of the subsystem being mapped.
For example, when a building has a way passing through it, the building and the way through it can not be assigned distinct layers. In this situation tunnel=building_passage is used when the way has outer building walls to all sides. The tag covered=* is used when the way is open at least at one side.
A tag covered=* on the way will make routing more efficient in cases where, for example, a route to avoid the natural elements is desired, or a route to covered parking or to an area for sheltered entry or egress into a vehicle is desired.
In other cases objects can be assigned a distinct layer but can not be represented by either a bridge, tunnel, or indoor mapping - in those cases covered=* provides a simple method to express such situations.
Another usecase, some objects such as underground parking garages and reservoirs are covered by some object that would not be mapped separately.