Developing an Open Web Mapping Application Jill Bernhard GEOG 596A Advisor: Ian Turton, Ph.D.

Project Proposal Background Goals and Objectives Proposed Methodology Project Timeline Anticipated Results

Background: Santa Clara Valley Water District Santa Clara County: fourth largest population in the state (Los Angeles, San Diego, Orange). What does the District do? –Clean, reliable drinking water. –Flood protection. –Healthy creeks and ecosystems.

Background: Current Data Distribution Interface

Background: Web-Based Application GIS DatabaseMap ServerClient

Background: ESRI Software Solutions A large investment has been made in ESRI software, including ArcIMS and ArcGIS Server. Technical issues with the new technology (ArcGIS Server) have prevented putting applications into production. Shrinking budgets may soon force a reduction in the amount we spend of software licenses.

Background: Commercial Services Examples: Google Maps, Yahoo! Maps. Familiar to most people. Easy-to-use. Free (under certain conditions). Little warning about changes.

Background: Open Standards and Software Defined Open Standards (Bruce Perens) –Availability –Maximize End-User Choice –No Royalty –No Discrimination –Extension or Subset –Predatory Practices Open Software –Source code available.

Background: Open Geospatial Consortium (OGC) Standards Geography Markup Language (GML) Keyhole Markup Language (KML) Styled Layer Descriptor (SLD) Web Map Service (WMS) Web Feature Service (WFS)

Background: Open Standards and Software Advantages Many free options available. Often easy to implement. Slow to change.

Background: Open Standards and Software Disadvantages Negative perception. “No such thing as a free lunch.” “You get what you pay for.”

Background: Application Created For GEOG 585

Goals and Objectives Data Standardization Geo-Web: "a distributed network of interconnected geographic information sources and processing services" (Lake, Burggraf, Trninic, & Rae, 2004). Review the viability of Open Standards and Software

Proposed Methodology: Database PostgreSQL ( PostGIS (

Proposed Methodology: Server GeoServer ( –Java Development Kit ( –Apache Tomcat (

Proposed Methodology: Services Web Map Service (WMS) Web Feature Service (WFS)

Proposed Methodology: Clients OpenLayers ( uDig (

Project Timeline Weeks 1-2: Install and Troubleshoot Software Weeks 3-4: Load Data into Database Weeks 5-6: Enable WFS functionality Weeks 7-8: Troubleshoot Application Weeks 9-10: Install on Production Server

Anticipated Results Data Availability and Accessibility Data Viewer using Open Software and Standards Better Understanding of the Viability of Open Software

Questions

References Lake, R., Burggraf, D., Trninic, M., & Rae, L. (2004). Geography Mark-Up Language: Foundation for the Geo-Web. London: Wiley. Perens, Bruce. Open Standards: Principles and Practice. Retrieved on April 23, 2010 from Turton, Ian. (2008). GEOG 585 – Open Web Mapping. Retrieved on April 23, 2010 from