“gis strategies for the city and county of san francisco”
DESCRIPTION
www.sfgov.org. “GIS Strategies for the City and County of San Francisco”. Erich Seamon Technology Chief Dept. of Telecom. and Information Services (415) 554-0808 [email protected]. Jeff Johnson Senior GIS Analyst Dept. of Public Works (415) 557-4742 [email protected]. - PowerPoint PPT PresentationTRANSCRIPT
“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