Ecodistricts Online Mapping
Tool
David Percy
Geospatial Data Manager
PSU Institute for Metropolitan Studies
Co-leads: Vivek Shandas, Will Garrick,
Jeff Kistler and PoSI
NNIP 2010 Fall- Oakland
I would have written a shorter letter, but I did not have the time. - Blaise Pascal
Greater Portland
Vancouver
Indicators
Regional Equity
Atlas
PSU Data
Commons
Ecodistricts
Assessment
Tools
Other, including
Teaching and
Research
Greater Portland
Vancouver
Indicators
Regional Equity
Atlas
PSU Data
Commons
Ecodistricts
Assessment
Tools
Other, including
Teaching and
Research
Data Architecture
Geometries:
Census Tract
Zip code
Neighborhood,
Etc
Each with a
unique geometry
id
Attribute data:
Geom_ID
Attribute
Value
Year
Short Stack
• PostGIS
– (open source Oracle Spatial, basically)
• Openlayers
– (open source equivalent to ArcGIS’ javascript
mapping client for AGS)
• No mapserver or geoserver for rendering,
rendered in client
Open standards for delivery
• Uses KML
– an OGC standard now, though originally
developed for Google Earth.
• Could use GeoJSON, which might parse
faster than XML in the browser.
• KML used due to easy support in
OpenLayers
• OpenStreetMap for base layer