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How does DNF apply to '''' Keith Murray, Chair of the DNF Expert Group Royal Geographical Society, L

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Title: How does DNF apply to '''' Keith Murray, Chair of the DNF Expert Group Royal Geographical Society, L


1
How does DNF apply to ....?Keith Murray, Chair
of the DNF Expert GroupRoyal Geographical
Society, London, 27 March, 2007
  • V1.00c

www.dnf.org
2
topics
  • The Digital National Framework
  • Organisation objectives
  • Related developments
  • INSPIRE etc
  • Land-Marine SDI
  • The DNF Model
  • How does DNF apply to .

3
DNF organisation objectives
4
Definition
  • DNF is an industry standard for integrating and
    sharing business and geographic information from
    multiple sources.

5
Basic Principles of DNF
  • The concept and methods shall be driven by the
    strategic needs of the wider GI community and the
    needs of the information industry.
  • Data should be collected only once and then
    re-used.
  • Reference information/data should be captured at
    the highest resolution whenever economically
    possible.
  • Such information may then, where appropriate,
    subsequently be used to meet analysis and
    multi-resolution publishing requirements.
  • DNF will incorporate and adopt existing de facto
    and de jure standards, wherever they are proven
    and robust.

6
A common framework for all
Application Information


Associated Reference Info.

Base Reference Information Geodetic Reference
System- RTK GPS

DNF is primarily concerned with locating and
referencing application and other business
information
7
What does the group do?
Technical Guides
DNF Event
Case Studies
Events
Documents
Website
Expert Gp 2-3 times a year
Technical Group Les Rackham 1-2 months
Communications Gp Andy Bray teleconf
Technical Wkg Group
Technical Wkg Group
8
Case Studies
9
Greater than the sum of the parts
coherent national infrastructure

access and exchange information
adopt common standards
for E,W S, UK Europe
develop tools supply systems
exploit the reference base
systems integrators
information users
reference data providers
data creators maintainers
systems suppliers
10
Getting involved?
  • Tracking
  • Attend events
  • Sign up for the Newsletter
  • Get in touch if you need advice
  • Participating
  • Participate in working groups
  • Use/test out the methods
  • Guiding
  • Join the Expert Group and help guide and
    prioritise

11
Related Developments
  • INSPIRE ESDI
  • Land-Marine SDI

12
Strategic Needs Legal drivers
13
INSPIRE
14
Draft conceptual model to support development of
IRs
Draft Architecture
References (incl. conformance)
Spatial Dataset
Spatial Dataset
Service Metadata )
Describes and references
Spatial Dataset
Spatial Dataset
Data Specification (Feature Cat., App. Schema,
etc)
Documentation, Generation
Spatial Dataset
Spatial Dataset
Dataset Metadata )
Discovery Service
Upload Service
Documentation, Generation
Describes and references
Application
Describes
Maintained as
References entries
References entries
Geoportal
Registers
Registry Service
Codelists, Thesauri
CRS Registers
service bus
Feature Catalogues
Other Registers
Transformation Service, Invoke Services Service
) (meta)data sets may be virtual, i.e. the
INSPIRE representation may be created on-the-fly
through internal transformation services
From joint DT DSMD session INSPIRE
Architecture Overview -DRAFT. 2006-09-25
15
Role of the Generic Conceptual Model D2.5
16
Definition of Annex Themes D2.3
  • Annex I
  • Coordinate reference systems
  • Geographical grid systems
  • Geographical names
  • Administrative units
  • Addresses
  • Cadastral parcels
  • Transport networks
  • Hydrography
  • Protected sites
  • Annex II
  • Elevation
  • Land cover
  • Ortho-imagery
  • Geology

Harmonised spatial data specifications more
stringent for Annex I and II than for Annex III
17
Definition of Annex Themes D2.3
  • Annex III
  • Statistical units
  • Buildings
  • Soil
  • Land use
  • Human health and safety
  • Utility and governmental services
  • Environmental monitoring facilities
  • Production and industrial facilities
  • Agricultural and aquaculture facilities
  • Population distribution demography
  • Area management/restriction/regulation zones
    reporting units
  • Natural risk zones
  • Atmospheric conditions
  • Meteorological geographical features
  • Oceanographic geographical features
  • Sea regions
  • Bio-geographical regions
  • Habitats and biotopes
  • Species distribution
  • Energy Resources
  • Mineral resources

18
D2.5 Data Specification Components
19
Unique identifiers
UK examples are illustrative only work in
progress
ltlocal identifiergt
ltprefixgt
ltURNgt
osgb
1234567890123456
uk.
http//osmm.topo.db
dudl
123456789012
uk.
http//dudleymbc.db
1234567845690123
eaew
uk.
http//envagency.db
HA23636
http//lrew.db
lrew
uk.
URN Universal Resource Name
20
Protected Site Cadastral parcel Flood
Extent Planning zone Topographic Map
Linking Many to many
Overlays.
Linking Object Referencing
Reuse
21
MRC Point information
NUTS Levels
Georeferencing At point level Either Address or
RW spatial object
22
MRC Linear objects eg rivers/roads
Id-938
Application information is held once and
referenced.
Id-783
Id-345
Id-245
Id-290
data collection
(base geography)
Id-378
Id-123
Id-238
Id-293
Publishing aggregated information at different
resolutions - consistently
Resolution
23
Land-Marine SDI
24
Harmonised?
25
Drivers?
26
Progress?
27
One real world ..
28
The mapping solution
  • NMAs and HOs generally use
  • Different coordinate systems
  • Different projections
  • Different datums (Hz V)
  • Different content

RESULT Users cannot reference any object
consistently across the coastal zone
29
A next generation SDI solution
Common height datum
Integrated geology (3D)
  • Common framework to support
  • Interoperable coordinate systems datums
  • Interoperable objects along agreed boundary
  • Interoperable Feature Catalogues

RESULT Marine SDI and Land SDI link up
seamlessly
30
Coordinate Systems Transformations
UK Systems from DNF TG 0020
31
Agreed interface maintenance
Object classification and reconciliation
HO
NMCA
32
(No Transcript)
33
The DNF Model .
34
How is DNF defined? - Roadmap components
  • 2. DNF Registry Operational
  • Incorporating
  • 2.1 Identifier management
  • 2.2 Feature/Object catalogue and Taxonomy
  • 2.3 Terminology
  • 2.4 Measuring conformance (of a dataset against
    the model)
  • 1. DNF Model
  • Incorporating
  • 1.1 Basic DNF principles
  • 1.2 Reference Model
  • 1.3 Spatial/Temporal reference Model
    Transformations
  • 1.4 Object Model
  • 1.5 Data Association Models
  • 3.3 Information Exchange
  • 3.4 Maintenance
  • Other Guidelines as required
  • 3. Supporting Guidelines
  • To include
  • 3.1 Metadata
  • 3.2 Information Quality

35
Technical Guides
36
A common foundation Great Britain land area
37
A common foundation Great Britain coastal
waters
  • SeaZone is creating Base Associated Reference
    Information offshore
  • Marine feature types complement those on land
    within extended catalogue
  • Differences and replication of objects along
    coast are being addressed
  • Base Reference Topography is inter-operable with
    OS MasterMapTM
  • Vertical datum issues are being addressed to
    create single 3-D surface from land to sea (VORF)

38
Object referencing basic cases
39
B3 Coterminous area example a
Example of property parcel
Basic types can be point, line and area objects.
40
A3 Non-coterminous area example
Protected site, based on 500m radius from centre
of church tower. Note this is an example from
IGN-F.
41
A3 Non-coterminous area example
Farmers subsidy claim 20m inside the field
boundary.
42
How does it apply to
43
Protected Sites Env. Information
CROW Act 2000
44
Heritage
45
Questions.
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