spatial.addNodes

Procedure

Adds the given nodes list to the layer, returns the count

Signature

spatial.addNodes(layerName :: STRING, nodes :: LIST<NODE>) :: (count :: INTEGER)

Input parameters

Name Type Default Description

layerName

STRING

null

The name of the layer

nodes

LIST<NODE>

null

the nodes to be added to the index

Output parameters

Name Type Description

count

INTEGER

Examples

Create a point layer with X and Y properties

CALL spatial.addPointLayerXY('geom','lon','lat')

Add two nodes to the layer

CREATE (n1:Node {id: 1, lat:60.1,lon:15.2}),(n2:Node {id: 2, lat:60.1,lon:15.3}) WITH n1,n2 CALL spatial.addNodes('geom',[n1,n2]) YIELD count RETURN n1,n2,count
Table 1. Result
count n1 n2 
2
 
(:Node {
    bbox: [ 15.2, 60.1, 15.2, 60.1 ],
    gtype: 1,
    id: 1,
    lat: 60.1,
    lon: 15.2
})
 
(:Node {
    bbox: [ 15.3, 60.1, 15.3, 60.1 ],
    gtype: 1,
    id: 2,
    lat: 60.1,
    lon: 15.3
})

Find nodes within distance

CALL spatial.withinDistance('geom',{lon:15.0,lat:60.0},100)
Table 2. Result
distance node 
15.713441434310283
 
(:Node {
    bbox: [ 15.2, 60.1, 15.2, 60.1 ],
    gtype: 1,
    id: 1,
    lat: 60.1,
    lon: 15.2
})
 
20.024944023694385
 
(:Node {
    bbox: [ 15.3, 60.1, 15.3, 60.1 ],
    gtype: 1,
    id: 2,
    lat: 60.1,
    lon: 15.3
})

Remove node 1

MATCH (node) WHERE node.id = 1
CALL spatial.removeNode('geom', node) YIELD nodeId
RETURN nodeId
CALL spatial.withinDistance('geom',{lon:15.0,lat:60.0},100)
Table 3. Result
distance node 
20.024944023694385
 
(:Node {
    bbox: [ 15.3, 60.1, 15.3, 60.1 ],
    gtype: 1,
    id: 2,
    lat: 60.1,
    lon: 15.3
})

Remove node 2

MATCH (node) WHERE node.id = 2
CALL spatial.removeNode.byId('geom', elementId(node)) YIELD nodeId
RETURN nodeId
CALL spatial.withinDistance('geom',{lon:15.0,lat:60.0},100)
Result

No results