Query Geospatial Data using SPARQL Query Language

I will soon put my full attention to writing a very simple introduction to SPARQL that will make these demos much easier to understand. For now though, this is fundamentally about demonstrating a query solution production workflow that involves —

  1. Query Parsing
  2. Cost Analysis & Solution Plan Building that includes Image-Processing
  3. Data Visualization using an HTML5 & Javascript page

Screenshots

Polygon and multiple points on a map
Lines and multiple points on a map

PivotViewer Page Links

[1] Polygon and multiple points on a map

[2] Multiple Polygons and multiple points on a map

[3] Lines and multiple points on a map

SPARQL Query Source Code Links

[1] Polygon and multiple points on a map

[2] Multiple Polygons and multiple points on a map

[3] Lines and multiple points on a map

Tools Used

[1] OpenLink Virtuoso — High-Performance, Scalable, and Secure Multi-Model RDBMS that supports SPARQL & SQL Query Languages

[2] Linked Open Data Cloud Cache — URIBurner Service (Live Virtuoso Instance)