Examples of OSMLayer

org.neo4j.gis.spatial.osm.OSMLayer
Instances of this class represent the primary layer of the OSM Dataset. It extends the DynamicLayer class becauase the OSM dataset can have many layers. Only one is primary, the layer containing all ways. Other layers are dynamic. @author craig @since 1.0.0

Examples of org.neo4j.gis.spatial.osm.OSMLayer

    GraphDatabaseService database = new GraphDatabaseFactory().newEmbeddedDatabase(databasePath);
    try {
      // START SNIPPET: exportShapefileFromOSM
            SpatialDatabaseService spatialService = new SpatialDatabaseService(database);
            try (Transaction tx = database.beginTx()) {
          OSMLayer layer = (OSMLayer) spatialService.getLayer("map.osm");
          DynamicLayerConfig wayLayer = layer.addSimpleDynamicLayer(Constants.GTYPE_LINESTRING);
          ShapefileExporter shpExporter = new ShapefileExporter(database);
          shpExporter.exportLayer(wayLayer.getName());
                tx.success();
            }
      // END SNIPPET: exportShapefileFromOSM

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Examples of org.neo4j.gis.spatial.osm.OSMLayer

    shutdownDatabase();
  }


  public void testAnalysis2(String osm, int years, int days) throws IOException {
    SpatialDatabaseService spatial = new SpatialDatabaseService(graphDb());
    OSMLayer layer = (OSMLayer) spatial.getLayer(osm);
    OSMDataset dataset = (OSMDataset) layer.getDataset();
    Map<String, User> userIndex = new HashMap<String, User>();
    long latestTimestamp = 0L;
    long firstTimestamp = Long.MAX_VALUE;


    for (Node cNode : dataset.getAllChangesetNodes()) {
      long timestamp = (Long) cNode.getProperty("timestamp", 0L);
      Node userNode = dataset.getUser(cNode);
      String name = (String) userNode.getProperty("name");


      User user = userIndex.get(name);
      if (user == null) {
        user = new User(userNode.getId(), name);
        userIndex.put(name, user);
      }
      user.addChangeset(cNode, timestamp);
      if (latestTimestamp < timestamp)
        latestTimestamp = timestamp;
      if (firstTimestamp > timestamp)
        firstTimestamp = timestamp;
    }
    SortedSet<User> topTen = getTopTen(userIndex);
    
    Date latest = new Date(latestTimestamp);
    Calendar time = Calendar.getInstance();
    time.setTime(latest);
    int slidesPerYear = 360/days;
    int slideCount = slidesPerYear * years;
    long msPerSlide = days * 24 * 3600000;
    int timeWindow = 15;
    StringBuffer userQuery = new StringBuffer();
    int user_rank = 1;
    for (User user : topTen) {
      if (userQuery.length() > 0)
        userQuery.append(" or ");
      userQuery.append("user = '" + user.name + "'");
      user_rank++;
    }
    LinkedHashMap<DynamicLayerConfig,Long> slides = new LinkedHashMap<DynamicLayerConfig,Long>();
    for (int i = -timeWindow; i < slideCount; i++) {
      long timestamp = latestTimestamp - i * msPerSlide;
      long minTime = timestamp;
      long maxTime = timestamp + 15 * msPerSlide;
      time.setTimeInMillis(timestamp);
      Date date = new Date(timestamp);
      System.out.println("Preparing slides for " + date);
      String name = osm + "-" + date;
      DynamicLayerConfig config = layer.addLayerConfig(name, Constants.GTYPE_GEOMETRY, "timestamp > " + minTime + " and timestamp < "
          + maxTime + " and (" + userQuery + ")");
      System.out.println("Added dynamic layer '"+config.getName()+"' with CQL: "+config.getQuery());
      slides.put(config, timestamp);
    }
    DynamicLayerConfig config = layer.addLayerConfig(osm + "-top-ten", Constants.GTYPE_GEOMETRY, userQuery.toString());
    System.out.println("Added dynamic layer '"+config.getName()+"' with CQL: "+config.getQuery());
    slides.clear();
    slides.put(config, 0L);


    StyledImageExporter imageExporter = new StyledImageExporter(graphDb());

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Examples of org.neo4j.gis.spatial.osm.OSMLayer


        // Define dynamic layers
        ArrayList<Layer> layers = new ArrayList<Layer>();
        try (Transaction tx = graphDb().beginTx()) {
            SpatialDatabaseService spatialService = new SpatialDatabaseService(graphDb());
            OSMLayer osmLayer = (OSMLayer) spatialService.getLayer(osmFile);
            LinearRing ring = osmLayer.getGeometryFactory().createLinearRing(
                    new Coordinate[] { new Coordinate(bbox.getMinX(), bbox.getMinY()), new Coordinate(bbox.getMinX(), bbox.getMaxY()),
                            new Coordinate(bbox.getMaxX(), bbox.getMaxY()), new Coordinate(bbox.getMaxX(), bbox.getMinY()),
                            new Coordinate(bbox.getMinX(), bbox.getMinY()) });
            Polygon polygon = osmLayer.getGeometryFactory().createPolygon(ring, null);
            layers.add(osmLayer.addLayerConfig("CQL1-highway", GTYPE_LINESTRING, "highway is not null and geometryType(the_geom) = 'LineString'"));
            layers.add(osmLayer.addLayerConfig("CQL2-residential", GTYPE_LINESTRING, "highway = 'residential' and geometryType(the_geom) = 'LineString'"));
            layers.add(osmLayer.addLayerConfig("CQL3-natural", GTYPE_POLYGON, "natural is not null and geometryType(the_geom) = 'Polygon'"));
            layers.add(osmLayer.addLayerConfig("CQL4-water", GTYPE_POLYGON, "natural = 'water' and geometryType(the_geom) = 'Polygon'"));
            layers.add(osmLayer.addLayerConfig("CQL5-bbox", GTYPE_GEOMETRY, "BBOX(the_geom, " + toCoordinateText(bbox) + ")"));
            layers.add(osmLayer.addLayerConfig("CQL6-bbox-polygon", GTYPE_GEOMETRY, "within(the_geom, POLYGON(("
                    + toCoordinateText(polygon.getCoordinates()) + ")))"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "primary"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "secondary"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "tertiary"));
            layers.add(osmLayer.addSimpleDynamicLayer(GTYPE_LINESTRING, "highway=*"));
            layers.add(osmLayer.addSimpleDynamicLayer(GTYPE_LINESTRING, "highway=footway, bicycle=yes"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway=*, bicycle=yes"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "residential"));
            layers.add(osmLayer.addCQLDynamicLayerOnAttribute("highway", "residential", GTYPE_LINESTRING));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "footway"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "cycleway"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "track"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "path"));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", "unclassified"));
            layers.add(osmLayer.addSimpleDynamicLayer("amenity", "parking", GTYPE_POLYGON));
            layers.add(osmLayer.addSimpleDynamicLayer("railway", null));
            layers.add(osmLayer.addSimpleDynamicLayer("highway", null));
            layers.add(osmLayer.addSimpleDynamicLayer("waterway", null));
            layers.add(osmLayer.addSimpleDynamicLayer("building", null, GTYPE_POLYGON));
            layers.add(osmLayer.addCQLDynamicLayerOnAttribute("building", null, GTYPE_POLYGON));
            layers.add(osmLayer.addSimpleDynamicLayer("natural", null, GTYPE_GEOMETRY));
            layers.add(osmLayer.addSimpleDynamicLayer("natural", "water", GTYPE_POLYGON));
            layers.add(osmLayer.addSimpleDynamicLayer("natural", "wood", GTYPE_POLYGON));
            layers.add(osmLayer.addSimpleDynamicLayer("natural", "coastline"));
            layers.add(osmLayer.addSimpleDynamicLayer("natural", "beach"));
            layers.add(osmLayer.addSimpleDynamicLayer(GTYPE_POLYGON));
            layers.add(osmLayer.addSimpleDynamicLayer(GTYPE_POINT));
            layers.add(osmLayer.addCQLDynamicLayerOnGeometryType(GTYPE_POLYGON));
            layers.add(osmLayer.addCQLDynamicLayerOnGeometryType(GTYPE_POINT));
            assertEquals(layers.size() + 1, osmLayer.getLayerNames().size());
            tx.success();
        }
    // Now export the layers to files
    // First prepare the SHP and PNG exporters
    ShapefileExporter shpExporter = new ShapefileExporter(graphDb());

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Examples of org.neo4j.gis.spatial.osm.OSMLayer

    printDatabaseStats();


    // Define dynamic layers
    List<Layer> layers = new ArrayList<Layer>();
    SpatialDatabaseService spatialService = new SpatialDatabaseService(graphDb());
    OSMLayer osmLayer = (OSMLayer) spatialService.getLayer(osm);
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "primary"));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "secondary"));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "tertiary"));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "residential"));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "footway"));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "cycleway"));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "track"));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", "path"));
    layers.add(osmLayer.addSimpleDynamicLayer("railway", null));
    layers.add(osmLayer.addSimpleDynamicLayer("highway", null));


    // Now test snapping to a layer
    GeometryFactory factory = osmLayer.getGeometryFactory();
    EditableLayerImpl results = (EditableLayerImpl) spatialService.getOrCreateEditableLayer("testSnapping_results");
    String[] fieldsNames = new String[] { "snap-id", "description", "distance" };
    results.setExtraPropertyNames(fieldsNames);
    Point point = factory.createPoint(new Coordinate(12.9777, 56.0555));
    results.add(point, fieldsNames, new Object[] { 0L, "Point to snap", 0L });
    for (String layerName : new String[] { "railway", "highway-residential" }) {
      Layer layer = osmLayer.getLayer(layerName);
      assertNotNull("Missing layer: " + layerName, layer);
      System.out.println("Closest features in " + layerName + " to point " + point + ":");
      List<PointResult> edgeResults = SpatialTopologyUtils.findClosestEdges(point, layer);
      for (PointResult result : edgeResults) {
        System.out.println("\t" + result);
        results.add(result.getKey(), fieldsNames, new Object[] { result.getValue().getGeomNode().getId(),
            "Snapped point to layer " + layerName + ": " + result.getValue().getGeometry().toString(),
            (long) (1000000 * result.getDistance()) });
      }
      if (edgeResults.size() > 0) {
        PointResult closest = edgeResults.get(0);
        Point closestPoint = closest.getKey();


        SpatialDatabaseRecord wayRecord = closest.getValue();
        OSMDataset.Way way = ((OSMDataset) osmLayer.getDataset()).getWayFrom(wayRecord.getGeomNode());
        OSMDataset.WayPoint wayPoint = way.getPointAt(closestPoint.getCoordinate());
      }
    }


  }

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