neo4j-spatial

https://github.com/craigtaverner/neo4j-spatial.rb

Neo4j-Spatial adds GIS and spatial analysis capabilities to the Neo4j Graph Database. This allows you to load spatial data, like points, lines, polygons and more complex geometries, index them and perform fast spatial queries on them. It includes specific support for OSM data, and Simple Feature data (as found in Shapefile format), but can be layered on top of any existing Neo4j database with spatial data, or data with some spatial elements. The Neo4j-Spatial.rb wrapper allows you to access Neo4j-Spatial features from the convenience of the Ruby scripting language.