OpenHuFu is an open-sourced data federation system to support collaborative queries over multi databases with security guarantee.
bring sf to spark in production
A Visual Spatial Query Language written in Common Lisp & CLIM for its GUI
DLMAPS = Description Logic Maps: Ontology-Based Spatial Queries to Digital City Maps
CSD-RkNN: Conic Section Discriminances for Large Scale Reverse k Nearest Neighbors Queries
A framework for the efficient representation and analysis of triangulated terrains
From Planimetry to Graph - A First Step Towards the Implementation of an Efficient AED Program
Geometric Network Simulator
spatial data selection queries and nearest neighbor search for Beijing restaurants
Hotspot analysis on Big Data of a major taxi company using Apache Spark and Scala
R+-Tree with augmentations to support Textual-Spatial-Queries
🗺️ Five simple utilities that implement spatial queries in two-dimensional space
world-wide spatial search for airports, ports, train stations