spatial.getLayerBoundingBox

Procedure

Returns the bounding box of the layer

Signature

spatial.getLayerBoundingBox(name :: STRING) :: (minX :: FLOAT, minY :: FLOAT, maxX :: FLOAT, maxY :: FLOAT, crs :: STRING)

Input parameters

Name Type Default Description

name

STRING

null

The name of the layer

Output parameters

Name Type Description

minX

FLOAT

minY

FLOAT

maxX

FLOAT

maxY

FLOAT

crs

STRING

The CRS in geotools format, e.g. WGS84(DD)

Examples

Get the bounding box of a layer

CALL spatial.addPointLayer('bbox_layer', 'rtree', 'wgs84') YIELD node
Table 1. Result
node 
(:SpatialLayer {
    geomencoder: "org.neo4j.gis.spatial.encoders.SimplePointEncoder",
    index_class: "org.neo4j.gis.spatial.index.LayerRTreeIndex",
    layer: "bbox_layer",
    layer_class: "org.neo4j.gis.spatial.SimplePointLayer",
    layercrs: "GEOGCS[\"WGS84(DD)\", \n  DATUM[\"WGS84\", \n    SPHEROID[\"WGS84\", 6378137.0, 298.257223563]], \n  PRIMEM[\"Greenwich\", 0.0], \n  UNIT[\"degree\", 0.017453292519943295], \n  AXIS[\"Geodetic longitude\", EAST], \n  AXIS[\"Geodetic latitude\", NORTH], \n  AUTHORITY[\"EPSG\",\"4326\"]]"
})

Add points at opposite corners

CREATE (n1:Point {latitude: 60.0, longitude: 15.0, name: 'southwest'})
CREATE (n2:Point {latitude: 61.0, longitude: 16.0, name: 'northeast'})
WITH n1, n2
CALL spatial.addNode('bbox_layer', n1) YIELD node as added1
WITH n2, added1
CALL spatial.addNode('bbox_layer', n2) YIELD node as added2
RETURN added1, added2
CALL spatial.getLayerBoundingBox('bbox_layer') YIELD minX, minY, maxX, maxY, crs
Table 2. Result
crs maxX maxY minX minY

WGS84(DD)a

[source] ---- 16.0 ----

 
61.0
 
15.0
 
60.0