Classes
class	PointResult

Static Public Member Functions
static ArrayList< PointResult >	findClosestEdges (TemporalPoint point, LayerST layer)

static ArrayList< PointResult >	findClosestEdges (TemporalPoint point, LayerST layer, double distance)

static ArrayList< PointResult >	findClosestEdges (TemporalPoint point, LayerST layer, Geometry filter)

static Point	locatePoint (LayerST layer, Geometry geometry, double measure)

static TemporalCoordinate	locatePoint (Geometry geometry, double measure)

static TemporalPoint	locatePoint (LayerST layer, Geometry geometry, double measure, double offset)

static TemporalCoordinate	locatePoint (Geometry geometry, double measure, double offset)

static ReferencedTemporalEnvelope	adjustBounds (ReferencedTemporalEnvelope bounds, double zoomFactor, double[] offsetFactor)

static MBB	adjustBounds (MBB bounds, double zoomFactor, double[] offset)

static MBB	createEnvelopeForGeometryDensityEstimate (LayerST layer, TemporalCoordinate point, int limit)

static MBB	createEnvelopeForGeometryDensityEstimate (LayerST layer, TemporalCoordinate point, double fraction)

Detailed Description

This class is a temporary location for collecting a number of spatial utilities before we have decided on a more complete analysis structure. Do not rely on this API remaining constant.

Member Function Documentation

static ReferencedTemporalEnvelope Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.adjustBounds	(	ReferencedTemporalEnvelope	bounds,
		double	zoomFactor,
		double[]	offsetFactor
	)

static

Adjust the size and position of a ReferencedEnvelope using fractions of the current size. For example:

bounds = adjustBounds(bounds, 0.3, new double[] { -0.1, 0.1 });

This will zoom in to show 30% of the height and width, and will also move the visible window 10% to the left and 10% up.

Parameters

bounds	current envelope
zoomFactor	fraction of size to zoom in by
offsetFactor	fraction of size to offset visible window by

Returns: adjusted envelope

static MBB Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.adjustBounds	(	MBB	bounds,
		double	zoomFactor,
		double[]	offset
	)

static

static MBB Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.createEnvelopeForGeometryDensityEstimate	(	LayerST	layer,
		TemporalCoordinate	point,
		int	limit
	)

static

Create an Envelope that should approximately include the specified number of geometries, based on a simple linear calculation of the geometry density. If the layer has fewer geometries, then the layer bounds will be returned. If the limit is set to zero (or negative), a point Envelope will be returned.

Parameters

layer	the layer whose geometry density is to be used to estimate the size of the envelope
point	the coordinate around which to build the envelope
limit	the number of geometries to be included in the envelope

Returns: an envelope designed to include the estimated number of geometries

static MBB Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.createEnvelopeForGeometryDensityEstimate	(	LayerST	layer,
		TemporalCoordinate	point,
		double	fraction
	)

static

Create an Envelope that should approximately include the specified number of geometries, based on a simple linear calculation of the geometry density. If the layer has fewer geometries, then the layer bounds will be returned. If the limit is set to zero (or negative), a point Envelope will be returned.

Parameters

layer	the layer whose geometry density is to be used to estimate the size of the envelope
point	the coordinate around which to build the envelope
fraction	the fractional number of geometries to be included in the envelope

Returns: an envelope designed to include the estimated number of geometries

static ArrayList<PointResult> Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.findClosestEdges	(	TemporalPoint	point,
		LayerST	layer
	)

static

static ArrayList<PointResult> Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.findClosestEdges	(	TemporalPoint	point,
		LayerST	layer,
		double	distance
	)

static

static ArrayList<PointResult> Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.findClosestEdges	(	TemporalPoint	point,
		LayerST	layer,
		Geometry	filter
	)

static

static Point Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.locatePoint	(	LayerST	layer,
		Geometry	geometry,
		double	measure
	)

static

Create a Point located at the specified 'measure' distance along a Geometry. This is achieved through using the JTS LengthIndexedLine.extractPoint(measure) method for finding the coordinates at the specified measure along the geometry. It is equivalent to Oracle's SDO_LRS.LOCATE_PT.

See also: http://download.oracle.com/docs/cd/B13789_01/appdev.101/b10826/sdo_lrs_ref.htm#i85478; http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/linearref/LengthIndexedLine.html

Parameters

layer	Layer the geometry is contained by, and is used to access the GeometryFactory for creating the Point
geometry	Geometry to measure
measure	the distance along the geometry

Returns: Point at 'measure' distance along the geometry

static TemporalCoordinate Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.locatePoint	(	Geometry	geometry,
		double	measure
	)

static

Find the coordinate at the specified 'measure' distance along a Geometry. This is achieved through using the JTS LengthIndexedLine.extractPoint(measure) method for finding the coordinates at the specified measure along the geometry. It is equivalent to Oracle's SDO_LRS.LOCATE_PT.

See also: http://download.oracle.com/docs/cd/B13789_01/appdev.101/b10826/sdo_lrs_ref.htm#i85478; http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/linearref/LengthIndexedLine.html

Parameters

geometry	Geometry to measure
measure	the distance along the geometry

Returns: Coordinate at 'measure' distance along the geometry

static TemporalPoint Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.locatePoint	(	LayerST	layer,
		Geometry	geometry,
		double	measure,
		double	offset
	)

static

Create a Point located at the specified 'measure' distance along a Geometry, and offset to the left of the Geometry by the specified offset distance. This is achieved through using the JTS LengthIndexedLine.extractPoint(measure) method for finding the coordinates at the specified measure along the geometry. It is equivalent to Oracle's SDO_LRS.LOCATE_PT.

See also: http://download.oracle.com/docs/cd/B13789_01/appdev.101/b10826/sdo_lrs_ref.htm#i85478; http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/linearref/LengthIndexedLine.html

Parameters

layer	Layer the geometry is contained by, and is used to access the GeometryFactory for creating the Point
geometry	Geometry to measure
measure	the distance along the geometry
offset	the distance offset to the left (or right for negative numbers)

Returns: Point at 'measure' distance along the geometry, and offset

static TemporalCoordinate Neo4jSpatiotemporal.SpatialTemporalTopologyUtils.locatePoint	(	Geometry	geometry,
		double	measure,
		double	offset
	)

static

Find the coordinate located at the specified 'measure' distance along a Geometry, and offset to the left of the Geometry by the specified offset distance. This is achieved through using the JTS LengthIndexedLine.extractPoint(measure) method for finding the coordinates at the specified measure along the geometry. It is equivalent to Oracle's SDO_LRS.LOCATE_PT.

See also: http://download.oracle.com/docs/cd/B13789_01/appdev.101/b10826/sdo_lrs_ref.htm#i85478; http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/linearref/LengthIndexedLine.html

Parameters

layer	Layer the geometry is contained by, and is used to access the GeometryFactory for creating the Point
geometry	Geometry to measure
measure	the distance along the geometry
offset	the distance offset to the left (or right for negative numbers)

Returns: Point at 'measure' distance along the geometry, and offset

The documentation for this class was generated from the following file:

/Users/fragkiskosgryllakis/Documents/workspace/STKPGraphQuery/src/Neo4jSpatiotemporal/SpatialTemporalTopologyUtils.java

Classes

Static Public Member Functions

Detailed Description

Member Function Documentation