Ecodistricts Online Mapping Tool

David PercyGeospatial Data Manager

PSU Institute for Metropolitan Studies

Co-leads: Vivek Shandas, Will Garrick, Jeff Kistler and PoSI

NNIP 2010 Fall- OaklandI would have written a shorter letter, but I did not have the time. - Blaise Pascal

Greater Portland Vancouver Indicators

Regional Equity Atlas

Ecodistricts Assessment

Tools

Other, including Teaching and

Research

PSU Data Commons

Greater Portland Vancouver Indicators

Regional Equity Atlas

Ecodistricts Assessment

Tools

Other, including Teaching and

Research

PSU Data Commons

Geometries:

Census Tract

Zip code

Neighborhood,

Etc

Each with a unique geometry id

Attribute data:

Geom_ID

Attribute

Value

Year

Data Architecture

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