There are a number of ways in which linear referencing (coordinate referencing for linear features) can be added to Wikipedia. As yet, there is no single method which has achieved consensus.
The best method may depend on the type of feature, its length, and the number of significant points of interest along it (though such points need not be sufficiently notable as to warrant their own article).
Linear features include, but are not limited to:
Editors may give:
In any of the above cases, which involve more than one pair of coordinates, a single (or "main") pair may be used as the coordinates for the whole article (and for its inclusion in partner sites such as Google Maps).
A "main" coordinate may not be appropriate for very long features; the definition of "very long" in this context is yet to be determined.
Flexibility is needed in order to label a representative point. For example, a canal's "main" coordinates may be best given as a point where it is a body of water; a nearby location may be better than a midpoint occupied by a notable or atypical object such as a tunnel or causeway.
These templates may be useful:
feature | main coordinates 1 | further recommended coordinates 2 | optional additions3 | examples |
---|---|---|---|---|
bridge | midpoint5 | both ends | features crossed, support pillars | Astoria–Megler Bridge |
canal | midpoint5 | both ends | junctions, wharves, crossings, locks | |
unburied pipeline | midpoint5 | endpoints | pumping stations, junctions, major changes in direction | |
buried pipeline | one endpoint | other endpoint and midpoint5 | pumping stations, exposed sections | |
railway | midpoint5 | both ends | stations, former stations, junctions, significant bridges | |
river | estuary/mouth | source, major confluences | crossings, other confluences, boundaries crossed, weirs, major changes in direction, islands | Johnson Creek (Willamette River) |
road | midpoint5 | both ends | major towns visited, major junctions, major features crossed | M6 |
tunnel | one endpoint | other endpoint and midpoint5 | ventilation shafts | Robertson Tunnel |
valley | central point | both ends | watersheds, rivers, settlements, landmarks, features |
Notes:
Coordinates for points on linear features should use a high level of precision, commensurate with features' small width, not great length, to ensure that the points are centred on, not merely near, the feature.
This guideline is not intended to cover:
Wikipedia:WikiProject U.S. Roads/Maps task force/Tutorial#Creating a KML file
There are a number of ways in which linear referencing (coordinate referencing for linear features) can be added to Wikipedia. As yet, there is no single method which has achieved consensus.
The best method may depend on the type of feature, its length, and the number of significant points of interest along it (though such points need not be sufficiently notable as to warrant their own article).
Linear features include, but are not limited to:
Editors may give:
In any of the above cases, which involve more than one pair of coordinates, a single (or "main") pair may be used as the coordinates for the whole article (and for its inclusion in partner sites such as Google Maps).
A "main" coordinate may not be appropriate for very long features; the definition of "very long" in this context is yet to be determined.
Flexibility is needed in order to label a representative point. For example, a canal's "main" coordinates may be best given as a point where it is a body of water; a nearby location may be better than a midpoint occupied by a notable or atypical object such as a tunnel or causeway.
These templates may be useful:
feature | main coordinates 1 | further recommended coordinates 2 | optional additions3 | examples |
---|---|---|---|---|
bridge | midpoint5 | both ends | features crossed, support pillars | Astoria–Megler Bridge |
canal | midpoint5 | both ends | junctions, wharves, crossings, locks | |
unburied pipeline | midpoint5 | endpoints | pumping stations, junctions, major changes in direction | |
buried pipeline | one endpoint | other endpoint and midpoint5 | pumping stations, exposed sections | |
railway | midpoint5 | both ends | stations, former stations, junctions, significant bridges | |
river | estuary/mouth | source, major confluences | crossings, other confluences, boundaries crossed, weirs, major changes in direction, islands | Johnson Creek (Willamette River) |
road | midpoint5 | both ends | major towns visited, major junctions, major features crossed | M6 |
tunnel | one endpoint | other endpoint and midpoint5 | ventilation shafts | Robertson Tunnel |
valley | central point | both ends | watersheds, rivers, settlements, landmarks, features |
Notes:
Coordinates for points on linear features should use a high level of precision, commensurate with features' small width, not great length, to ensure that the points are centred on, not merely near, the feature.
This guideline is not intended to cover:
Wikipedia:WikiProject U.S. Roads/Maps task force/Tutorial#Creating a KML file