问题
Based on a problem here an expert have answered with this code:
CALL spatial.addPointLayerGeohash('my_geohash_layer_name')
CREATE (n:Node {latitude:60.1,longitude:15.2}) WITH n
CALL spatial.addNode('my_geohash_layer_name',n) YIELD node
RETURN node
to create a geohash tree that organise spatial nodes.
so i tried that with two spatial nodes but unlike R-tree the spatial nodes aren't linked to the layer with any connection !? is this code true ? or what is wrong ?
回答1:
If you want an in-graph tree structure as an index, you need to use the RTree index (which is the default in Neo4j Spatial). If you want a geohash index, there will be no tree in the graph because geohashes are being stored as strings in a lucene index for string prefix searches. String prefix searches are a common way of searching geohash based indexes.
来源：https://stackoverflow.com/questions/50913970/how-to-create-geohash-tree-in-neo4j