Transcript Session Title - Rutgers University

CREATING, ACCESSING and SHARING
SPATIA DATA
with
NSDI
(National Spatial Data Infrastructure)
Approach
Presented
by
Timucin Bakirtas
Outline
– What is NSDI ?
– Strategies to Create NSDI
– NSDI Components
» Clearinghouse, Web portal, ArcWeb service
» Standards
» Framework & Spatial Data
» Metadata
» Partnerships & Organizations
– NSDI & GIS in Emergency Management
– Summary
WHAT IS NSDI
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It is a set of actions and new ways of creating,
accessing, sharing and using spatial data.
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The technologies, standards, and people necessary to
promote sharing of geospatial data through out all
levels of government, the private, non profit sector and
the academic community

It provides a base structure of practices and
relationships among data producers and users that
facilitates data sharing.

It is a national initiative lead by a federal agency that
partners with state, local, private and academic
organizations
NSDI is not only …
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Clearinghouse
Web Portal
Web Services
Standards
Framework
Metadata
FGDC
NJ Geospatial Forum
GIS Community
TECHNOLOGY
POLICIES
PEOPLE
WHY NSDI?

CREATING Spatial data:
NSDI will standardize the spatial data with its methods
and techniques.
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ACCESSING Spatial Data:
NSDI will make spatial data readily accessible through
the search of metadata
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SHARING Spatial Data:
Spatial data will be shared among various organizations
(Police, Emergency Managers, Planners, Health
Officials …), this will prevent the duplication of spatial
data
Strategies to Create NSDI
STRATEGY I: Conceptual steps
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Explain GIS benefits to the Nation and other
communities
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Include GIS in the curriculum of Universities
and other academia
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Organize seminars and symposiums where new
developments in GIS are addressed.
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Exchange GIS technology and ideas through
instructional Web sites and online forums
Strategies to Create NSDI
STRATEGY II: Logical and physical steps
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Form leading committee at the federal level to start this
initiative
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Involve State, local, and tribal governments in the
development and implementation of this initiative
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Utilize the expertise of academia, the private sector,
professional societies, and others as necessary to aide in
the development and implementation of NSDI
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Physically develop, implement NSDI and its
components.
NSDI COMPONENTS
WEB
PORTAL
CLEARINGHOUSE
GIS DATA
SERVERS
METADATA
FRAMEWORK
SPATIAL DATA
STANDARDS
PARTNERSHIPS & ORGANIZATIONS
Technology
Policies
People
CLEARINGHOUSE (SEARCH SERVER)
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It is a place where metadata reside.
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Metadata owners have to register as provider of data
and services.
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It is a search and discovery mechanism for spatial
data
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It should adopt a search protocol in order to make a
attribute search for metadata
WHAT IS Z39.50 SEARCH PROTOCOL
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It is used for searching and retrieving full-text
documents, bibliographic data, images and multimedia
in a distributed network environment
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The FGDC has developed a Z39.50 application profile
for geospatial metadata, called GEO
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Z39.50/GEO identifies a set of base standards, together
with appropriate options and parameters necessary to
accomplish identified functions
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The Z39.50 GEO Profile Search Protocol is a TCP/IP
socket-based protocol, and as such, does not require a
web server to be installed
SEARCH AND RETRIEVE MECHANISM
3
1
(User)
4
(Search Server)
6
2
5
(Web Portal)
• The phone and email are communication protocols,
• The languages (French and Italian) are communication profiles.
1. The user sends a question to the Web Portal in HTTP/HTML,
2. The Web Portal translates it to Z39.50/GEO and
3. Sends it to the search server.
4. The search server responds in Z39.50/GEO to the Web Portal,
5. Web Portal translates it to HTTP/HTML.
6. Sends it to user
• The HTTP and Z39.50 are the communication protocols, GEO and HTML are
communication profiles (or languages)
USER
GIS Web Portal
GATEWAY
HARVESTING
WEB SERVER
CLEARINGHOUSE
METADATA
Z39.50
FTP
GIS Server 1
GIS Server 3
GIS Server 2
WEB PORTAL TECHNOLOGY
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Search, integrate and view
GIS data from different
sources (data,
applications, web sites)
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Expand channels to
various communities for
collaboration, sharing and
networking
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Create an interactive
marketplace for cost
sharing
Source: 2005 ESRI Federal User Conference
MAP VIEWER
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Browser based map viewer that can be integrated with data services from
different data sources
Fusing multiple map services into a single map
Map Navigation
Selection Queries
User - friendly and self-explanatory.
Source: 2005 ESRI Federal User Conference
WEB PORTAL ARCHITECTURE
Web Browser (Thin Client)
GIS Software (Thick Client)
@ users
Web Portal
Place
Names &
Attributes
Gazetteer
WFS
Catalog
WMS
WCS
Data & Service
Metadata
@ portal
host site
Clients
Geospatial Web Services
@ provider
organizations
Legend:
Maps
Features
Coverages
Framework Data
STANDARDS
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Standardization is the process of getting people to agree
on acceptable technical solutions to common problems.
» ISO (International Standard Organization)
» FGDC ( Federal Geographic Data Committee)
» OGC (Open GIS Consortium)
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NSDI does not only adopt ISO, FGDC and OGC
standards but encompasses a broader range of
standards including :
»
»
»
»
»
HTTP(Hypertext Transportation Protocol),
W3 (World Wide Web Consortium) Standards.
SOAP(Simple Object Access Protocol),
WSDL (Web Services Description Language) and
UDDI (Universal Description Discovery and Integration)
STANDARDS Cont…
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Technical Committee 211 (ISO/TC 211) is responsible
for geospatial data, administration, information
management and geospatial services standards.
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FGDC develops geospatial data standards for NSDI ,
invites comments from all interested parties in drafting
data standards.
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OGC would agree on open interfaces for network
interoperability of geospatial systems; it plays a big role
in the development of GIS technology.
NSDI STANDARDS
ISO
ISO Technical
Committee (TC)
211
ISO/TC 211 – Joint
Advisory
Group (JAG)
National Standards Institute
(NSI)
Information Technology
Standard Committee (ITSC)
Consortia and
Academia
NDSI Standards
Open Geospatial
Consortium (OGS)
SOAP
W3C
HTTP
WSDL
GML
UDDI
FRAMEWORK DATA
1.Hydrology:
Lakes, River, Streams,
Channels
2.Cadastral:
Parcel, Land use, Zoning
3.Transportation:
Roads, rails,
4.Elevation:
Contour lines, spot elevation
5.Administrative
Boundaries:
Town ,County, State lines
6.Geodetic Control
Points:
Reference points
7.Orthoimagery:
Referenced orhtophotos and
aerials
DATA STANDARDS
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The purpose of spatial data standards is to facilitate data
sharing and increase interoperability among automated
geospatial information systems.
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Data formats/types
Data model
Data category
Data quality ( how accurate, how consistent)
Spatial Coordinate Reference
Common features
Attributes
Relationships
METADATA
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Metadata is as important as data, because it tells you
about data and services and how to access to it.
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Describes data in at least 3 categories:
– Criteria in how to find data by asking questions such
as who, what, when and how.
– Criteria that will show the purpose of data
– Criteria in how to access data
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Metadata will eliminate the duplication of spatial data
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Metadata will reduce the cost of data creation and time
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Metadata will tell the current ness of data
METADATA STANDARTS
• ISO 19115:2003 defines
CATALOG
The schema required for
describing geographic
information and services.
It provides information
about
MODELS
Metadata
DATA MODELS
• The identification,
• The extent,
• The quality,
• Spatial reference,
• Distribution of digital
geographic data.
MAPS
DATA SETS
EMERGENCY MANAGEMENT
with
NSDI and GIS Approach
NSDI & GIS Approach in Emergency Management
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Because of its visual and spatial functionality, GIS
technology provides better and faster statistical analyses for
decision makers (emergency managers)
HOW BIG is the hazard area
HOW MANY people live in the hazard zone
WHICH facilities outside the hazard zone maybe used as
shelters?
WHICH evacuation roads should displaced residents use?
WHAT are the best roads the hospitals outside of the hazard
zone?
WHERE are the areas and the buildings with the most
damage?
WHICH roads are damaged or blocked by debris?
Newport-Inglewood fault, Located in the southwestern Los Angeles basin
and capable of producing earthquakes in the range of 6.3 to 7.5 magnitude
In this scenario EM use NSDI approach to get layers , in common
coordinate system, create maps and perform critical analyses
Earthquake with a magnitude of 5.4 – 6.9 will affect the area
shown ( this area is referred to as the CRITICAL ZONE)
Modified
Mercali
Richter
VI
5.4
VII
6.1
VIII
6.5
IX
6.9
X
7.3
XI
8.1
XII
>8.1
The CRITICAL ZONE is approximately 75 Km to the north, 75
Km to the south and 45 Km to the east
Population and number of households within the CRITICAL
ZONE
12,311,763
Schools can be designated as Potential Shelters in the
CRITICAL ZONE( Address location & Capacities)
Update information at site
SHELTER CAPACITY=?
Roads can be identified and traffic flow can be organized in
CRITICAL ZONE.
Location Based Server (LBS) technology, SMS can be sent to mobile
users to redirect them to designated shelters or hospital locations
SUMMARY
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With NSDI, social, economic and critical decisions will be
taken with the benefit of the best available spatial
information.
With NSDI, Country will understand the necessary steps to
create, access and share spatial data,
NSDI will make the user community aware of the
importance of spatial data
NSDI will eliminate the duplication of spatial data that will
cut the cost and time
NSDI will make spatial data accessible from a central
portal and will make information readily accessible
Through NSDI, countries can become an integral partner
in the world‘s GIS community
Open to Questions