X <http://franz.com/ns/allegrograph/3.0/geospatial/fn/cartesianX> 
 ( point  )
 Returns the Cartesian x component of a point.
For example:
prefix geofn: <http://franz.com/ns/allegrograph/3.0/geospatial/fn/>
select ?X {
   bind(geofn:toPointXY(<http://ex#bar>, 56.0, 42.0) as ?p1 )
   bind(geofn:cartesianX(?p1) as ?X)
 }   point must be bound to a geospatial UPI.
Notes
The following namespace abbreviations are used:
- fti - <http://franz.com/ns/allegrograph/2.2/textindex/>
 - geo - <http://franz.com/ns/allegrograph/3.0/geospatial/>
 - geofn - <http://franz.com/ns/allegrograph/3.0/geospatial/fn/>
 - nd - <http://franz.com/ns/allegrograph/5.0/geo/nd#>
 - ndfn - <http://franz.com/ns/allegrograph/5.0/geo/nd/fn#>
 - sna - <http://franz.com/ns/allegrograph/4.11/sna/>
 
The SPARQL magic properties reference has additional information on using AllegroGraph magic properties and functions.