1. GIS Vector Data Formats Greg Yetman gyetman@ciesin.columbia.edu CIESIN – SEDAC http://sedac.ciesin.columbia.edu

2. GIS Vector Data Used Internally – Shapefile (ingest) – Esri Geodatabase Enterprise and File – PostGIS RDBM – GeoJSON from GeoServer and custom applications Distribution – Shapefile – WFS/GML (as services) – GeoJSON (as services) – CSV (points only)

3. Issues Shapefile – Corruption – Single-user only – Simple features only Geodatabase – Overhead with maintenance – Esri users only (mostly) PostGIS – None yet (simple use cases) GML – Client implementation issues limit interoperability – Limited community adoption GeoJSON – Simple features required for interoperability – Generally only a web-tier solution Non-geometry formats requested by some users