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JavaScript geo.destination

MarkLogic 10 Product Documentation
geo:destination

geo:destination(
   $p as cts:point,
   $bearing as xs:double,
   $distance as xs:double,
   [$options as xs:string*]
) as cts:point

Summary

Returns the point at the given distance (in units) along the given bearing (in radians) from the starting point.

Parameters
p The starting point.
bearing The bearing, in radians.
distance The distance, in units. See the units option, below.
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 $ny := cts:point(40, -73)
return
geo:destination($sf, 1.22100904274442,
    geo:distance($sf, $ny))

=> cts:point("40.009335,-72.997467")

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