MarkLogic 10 Product Documentationadmin:database-geospatial-region-path-index
admin:database-geospatial-region-path-index( $pathexpr as xs:string, $coordinate-system as xs:string, $geohash-precision as xs:integer, $invalid-values as xs:string, [$units as xs:string?] ) as element(db:geospatial-region-path-index)
Summary
This function constructs a geospatial region path index specification.
| Parameters | |
|---|---|
| pathexpr | The path expression for the index. The path should return true from cts:valid-index-path. |
| coordinate-system |
The coordinate system. Must be one of wgs84,
wgs84/double, etrs89,
etrs89/double, raw, raw/double.
|
| geohash-precision |
Specify the precision of the geohashes to use in the index. Higher
numbers result in a more precise index and faster queries, at the
expense of increased index size and slower ingestion speed.
Value must be between 2 and 6 (inclusive) if using a single precision
coordinate system; between 3 and 6 if double precision. Ignored for
raw and raw/double coordinate systems.
|
| invalid-values |
Specify how to handle values that cannot be parsed as regions.
Must be one of: reject or ignore.
|
| units |
Measure distance and the radii of circles in the specified units.
Allowed values: miles (default), km,
feet, meters.
|
Example
xquery version "1.0-ml";
import module namespace admin = "http://marklogic.com/xdmp/admin"
at "/MarkLogic/admin.xqy";
admin:database-geospatial-region-path-index(
"//kml:LinearRing/kml:coordinates", "wgs84", 2, "reject", "miles")
(: A geospatial region path index specification :)