在neo4j中创建geohash关系 [英] Creating geohash relationships in neo4j

问题描述

我的csv文件包含纬度/经度字段，我想要的是将该纬度/经度转换为 geohash ，然后在不同位置之间建立关系节点基于其geohash值.
该怎么做?

I've csv files that contains latitude/longitude fields, what i want is to convert this latitude/longitude into a geohash and then make a relationship between different location nodes based on their geohash values.
how to do that ?

推荐答案

Neo4j具有空间插件，这会为您的地理数据创建一个R-Tree.因此，您无需直接创建geohash，就可以直接使用此插件.

Neo4j has a spatial plugin, that creates a R-Tree for your geo-data. So instead of creating a geohash, you can directly use this plugin.

此外，Neo4j的最新版本引入了一些新的属性类型，其中一个是point.看一下文档: https://neo4j.com/docs/developer-manual/3.4/cypher/functions/spatial/

Moreover, the last version of Neo4j has introduced some new types for properties, and one of them is the point. Take a look at the documentation : https://neo4j.com/docs/developer-manual/3.4/cypher/functions/spatial/

只需创建一个geohash layer:

CALL spatial.addPointLayerGeohash('my_geohash_layer_name')

然后将您的节点添加到图层:

And then add your node to the layer :

CREATE (n:Node {latitude:60.1,longitude:15.2}) WITH n 
CALL spatial.addNode('my_geohash_layer_name',n) YIELD node 
RETURN node

您的节点必须具有latitude& longitude属性.

Your nodes must have a latitude & longitude properties.

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