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memgraphdb

Why I don't see nodes on the map?

I have a dataset that has longitude and latitude of subway stations. Here is an example what I get when I expand the results of MATCH (n) RETURN n; in Memgraph Lab.

{
   "id": 177,
   "labels": [
      "Station"
   ],
   "properties": {
      "latitude": 52.496161111,
      "longitude": 13.342702777,
      "name": "U-Bahnhof Viktoria-Luise-Platz"
   },
   "type": "node"
}

Query result - data:

Query result - data

I can see that Latitude and Longitude are defined for all nodes.

Graph schema:

Graph schema

I expected to get results shown on a map, not as a "circle" of nodes. How can I show my results on a map?

Graph results:

Graph results

Solution

  • Memgraph Lab uses Vislet to show data on map layer. In order for this to there has to be lat and lng numeric properties. You need to rename latitude to lat and longitude to lng.

    Here is cypher query that does that:

    MATCH (n)
SET n.lat = n.latitude, n.lng = n.longitude
REMOVE n.latitude, n.longitude