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JavaScript geo.distance

MarkLogic 9 Product Documentation
geo:distance

geo: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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