MarkLogic 10 Product Documentation
geo:distancegeo:distance(
$p1 as cts:point,
$p2 as cts:point,
[$options as xs:string*]
) as xs:double
Summary
Returns the distance (in units) between two points.
| Parameters |
| p1 |
The first point.
|
| p2 |
The second point.
|
| options |
Options for the operation. The default is ().
Options include:
- "coordinate-system=string"
- Use the given coordinate system. Valid values are:
- wgs84
- The WGS84 coordinate system.
- wgs84/double
- The WGS84 coordinate system at double precision.
- etrs89
- The ETRS89 coordinate system.
- etrs89/double
- The ETRS89 coordinate system at double precision.
- raw
- The raw (unmapped) coordinate system.
- raw/double
- The raw coordinate system at double precision.
- "precision=value"
- Use the coordinate system at the given precision. Allowed values:
float and double.
- "units=value"
- Measure distance and the radii of circles in the specified units.
Allowed values:
miles (default), km,
feet, meters.
|
Usage Notes
The value of the
precision option takes precedence over
that implied by the governing coordinate system name, including the
value of the
coordinate-system option. For example, if the
governing coordinate system is "wgs84/double" and the
precision
option is "float", then the operation uses single precision.
See Also
Example
let $sf := cts:point(37, -122)
let $ny := cts:point(40, -73)
return
geo:distance($sf, $ny)
=> 2623.2017796533
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