# AGGeospatialSphericalData.java

`package com.franz.agbase.examples;
import com.franz.agbase.*;
public class AGGeospatialSphericalData {
/**
* Demonstrates some basics of working with Spherical data.
*
* @param args unused
* @throws AllegroGraphException
*/
public static void main(String[] args) throws AllegroGraphException {
// Connect to server, which must already be running.
AllegroGraphConnection ags = new AllegroGraphConnection();
try {
ags.enable();
} catch (Exception e) {
throw new AllegroGraphException("Server connection problem", e);
}
// Create a fresh triple-store.
AllegroGraph ts = ags.renew("geospatial", AGPaths.TRIPLE_STORES);
// Register namespaces
ts.registerNamespace("ex","http://example.org/places/");
ts.registerNamespace("geo","http://franz.com/ns/allegrograph/3.0/geospatial/");
// Get a GeoExtension instance for this store to work with geospatial features
GeoExtension geo = ts.getGeoExtension();
// Define a geospatial subtype to encode coordinates
GeospatialSubtype subtype50 = geo.registerLatitudeStripingInMiles(50.0);
geo.addSubtype(subtype50);
// Encode the coordinates as a Geospatial UPI
// Note the argument ordering is x-longitude, y-latitude
UPI upi = geo.encodeUPI(subtype50, -122.31307, 37.86385);
// Decode the coordinates from the UPI
Object[] location = geo.decodeUPI(upi);
AGUtils.printObjectArray("Location:", location);
// Add triples to the store
ts.addStatement("!ex:Berkeley", "!ex:location", upi);
// Show all triples in the store
// Note that the location is printed in ISO 6709 format wherein
// the ordering is latitude-longitude.
TriplesIterator cc = ts.getStatements(null,null,null);
AGUtils.showTriples(cc);
// Serialize the store to an NTriples file
NTriplesSerializer ntser = new NTriplesSerializer();
ntser.setDestination(AGPaths.dataSources("geospatial-serialized.nt"));
ntser.setIfExists("supersede");
ntser.run(ts);
// Close the store and disconnect from the server.
ts.closeTripleStore();
ags.disable();
}
}
`

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