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“GIS Strategies for the City and
County of San Francisco”
Erich SeamonTechnology ChiefDept. of Telecom. and Information Services(415) [email protected]
Jeff JohnsonSenior GIS AnalystDept. of Public Works(415) [email protected]
Introduction
• Historical Overview of SF GIS
• CCSF Enterprise GIS Initiatives
• Spatial data distribution• Past data distribution
policies• Current data distribution
policies• Licensing Revenues• Legal Conformance• Long-term distribution
objectives• Summary and Questions
Department of Telecommunications & Information Services
Historical Overview
• CCSF has a fairly decentralized city/county model• Spatial data developed in multiple departments
independently• DPW takes lead in basemap development (1994)• City departments individually use basemap in their
own applications: pay yearly subscription fee for access
• Interaction between departments is minimal
• November 2000: Mayor makes announcement for DTIS to implement Enterprise GIS initiative.
Department of Telecommunications & Information Services
Enterprise GIS efforts
• One primary Citywide data integrator, distributor, and entperprise application developer
• Development of a dynamic, distributed spatial data warehouse
• Implementation of web-enabled applications
• Examination of data distribution policies• Design of appropriate citywide organizational model• Bring departments together (on multiple levels)
Department of Telecommunications & Information Services
Department of Telecommunications & Information Services
GIS ExecutiveSteering
Committee
GIS ExecutiveSteering
Committee
DTIS GIS Manager
DTIS GIS Manager
CIOCIO
Tech. Sub-Committee
Tech. Sub-Committee
Additional Sub-Committees
Additional Sub-Committees
Management&
Oversight
Management&
OversightApplication
Development
ApplicationDevelopment
Infrastructure &
Networking
Infrastructure &
Networking
Standards &
Doc.
Standards &
Doc.Database
Management
DatabaseManagement
DTISDTIS
Board of
Supervisors
Board of
Supervisors
Officeof theMayor
Officeof theMayor
Depts.Depts.
Depts.Depts.
San Francisco’s GIS Basemap
• Primary objective was – to create a common GIS Basemap for City government
to use and;– to build additional GIS layers and applications.
• Basemap development took roughly four years to develop.– +/- 2.5 foot accuracy.– available in three file formats: AutoCAD, ArcInfo, and
ArcView; as well as TIF and MrSID image formats.
• Basemap layers are maintained and updated by DPW staff, and now distributed citywide by DTIS.
• DTIS is providing Enterprise GIS services for all of CCSF
Department of Telecommunications & Information Services
Basemap Components
Department of Telecommunications & Information Services
Centerlines
Blocks and Lots
Features
Orthophotos
BasemapBasemap
Spatial Data Distribution
Department of Telecommunications & Information Services
Previous Distribution Policy
• Basemap Data Layers were available to public directly from Department of Public Works (DPW)
• DPW staff processed each request, each licensing agreement, each CD, etc. for both internal and external customers
• Result of above efforts:– DPW staff resources were not available for core duties– At that time, DPW/CCSF was unable to appropriately
market data
• DPW sought outside help to handle external requests
Department of Telecommunications & Information Services
Current Distribution Policy
• Basemap data layers available to public via our Value-Added Resellers– Barclay Mapworks, Inc.
– Hammon, Jensen, Wallen & Associates, Inc.
– ValueCAD, Inc.
• City signed agreements with each VAR in 1998
• City receives percentage of gross licensing revenues, capped at a maximum amount
• City receives royalties on all basemap-derived products sold
Department of Telecommunications & Information Services
Licensing Revenues
• City receives revenue from each VAR on quarterly basis, if any
• Through the VAR program: – ~ $30,000 collected since 1998– Through direct licensing by the City: over $110,000
collected since 1996 (if staff costs are subtracted, total net would be less …)
• Current revenue supplements, but clearly does not supports GIS Basemap and Library operating revenues
• City able to finance new orthophotography
Department of Telecommunications & Information Services
Public Records Act Conformance
• CCSF has its own public records legislature– Sunshine Ordinance
• Basemap system was granted an exception to the Sunshine Ordinance
• Multiple CA govt. agencies dealing with– privacy– precedence in records act conformance– Electronic Media - AB2799
Department of Telecommunications & Information Services
Long-term distribution objectives
• Re-evaluate current VAR policy• Possible alternatives:
– Full distribution of spatial data over the web (fits with CCSF Enterprise GIS model)
– Hybridization of VAR/free distribution approach
• Indirect benefits of full, free distribution seem to outweigh fiscal benefits with current VAR model
• Bottom line: a new method of distribution needs to be implemented, which better encourages the use of spatial data (internal to CCSF as well as to the public)
Department of Telecommunications & Information Services
“GIS strategies for the City and County of San
Francisco”
Department of Telecommunications & Information Services
Erich SeamonTechnology ChiefDept. of Telecom. and Information Services(415) [email protected]
Jeff JohnsonSenior GIS AnalystDept. of Public Works(415) [email protected]
www.sfgov.org