Transcript MasterMap David Medyckyj-Scott Emma Sutton Tim Urwin Aims for the workshop • • • To remind you about OS MasterMap To begin to raise awareness (again) To seek your.

MasterMap
David Medyckyj-Scott
Emma Sutton
Tim Urwin
Aims for the workshop
•
•
•
To remind you about OS MasterMap
To begin to raise awareness (again)
To seek your input
–
–
–
–
Are original requirements still valid?
Have new requirements appeared?
Is the timetable sensible?
What sort of support is required?
* for users
* for support staff
•
To identify any other issues
OS MasterMap – a Framework
Digital Terrain Model
Imagery
Topographic themes
Land Use
Transport Network (ITN)
Admin Boundary
Points of Interest
Pre-Build
OS MasterMap
•
A seamless database reflecting the real world,
with polygons representing man-made and
natural features
– topographic data have been restructured into a
seamless database of 416+ million objects
* fundamentally different to tile-based Land-Line data*
•
•
Delivered in new format, Geography Markup
Language (GML)
Delivered in new ways
– by theme
– by user defined area
– Change only Update (CoU)
OS MasterMap - Topography
TOIDs – Unique reference IDs
•
A unique identifier
for each object
– Allowing individual
feature identification
•
With a defined
lifecycle and version
number
Feature supply – not tile supply!
•
Builds on object
oriented model
•
Full extent of data
crossing the area of
interest is supplied
•
Results in the supply of
“hairy” data
Chunk Extent
Chunk Bounding Box
Integrated Transport Network
•
ITN links reference the Topography Layer
TOID
Version
Change Date
4000001298764523
1
310303
Descriptive Group
Descriptive Term
Nature of Road
Length
Road Topology
Local Street
Single Carriageway
42
Start Node
End Node
Reference to Topo
4000004756364758
4000009857364528
1000000139421883,
1000000139417597
OS MasterMap - benefits
•
Access to modern data
•
Consistent, national framework for referencing
geographic information allowing data to be linked
more easily
– Topographic Identifiers (TOIDs)
– data which can be exchanged and shared
•
Pre built polygons improves quality and means better
cartography
•
Richer attribution, for more versatile classification of
features, more intelligent data and better analysis
•
Greater control over supply e.g. themes and COU
•
New possibilities in terms of both end use and types
of services that can be offered
The service
Mapping
•
Digimap Carto and Classic will be modified to serve
MasterMap instead of Land-Line
•
Users must have the ability to
– view cartographic quality maps produced using the
MasterMap topographic data.
– select particular themes of interest and feature type to view
in the map
– generate and download a cartographic quality map for
printing. Formats offered will be GIF, EPS and PDF.
– produce a map combining themes and layers from MasterMap
Topographic with other OS mapping products
– And maybe select a feature on the map and request attribute
information, such as its area or when it was last updated
Q. What should we do with ITN?
Q. Is there a need for maps with
Land-Line style cartography?
Data supply
Must
• All data delivery is online
• User defines areas of
interest either interactively
on-screen or using a
selected predefined
administrative boundary
• Large requests are split
into manageable "chunks"
• All GML provided must be
virtually identical to that
which would be supplied
by OS
Should
• Option to select one or
more themes of data for
an area of interest
• Option to request changes
only once initial supply has
been taken
• Large requests processed
overnight
• Requests can be
bookmarked to run again
at a later date
Could
• Option to download data in formats
other than GML i.e. shape, mif/mid, DXF
• Option to take complete re-supply
• Access to historic data
Support
User requirements – have we got them right?
• Best delivery method for support?
•
– e.g. web and paper documentation
•
Training required for…
– site reps
– users (this is NEW for EDINA)
•
Guidance for institutions?
– responsibilities
– software and data management issues
•
Awareness raising will be important
– importance of local support, local experts
Timetable
•
Jan 2006 – Project Kick off
– Re-engagement with user community commences
to affirm user requirements.
•
Autumn 2006 - alpha version available for
expert user testing
•
Early 2007 - beta version available to a wider
group (early adopters)
•
August 2007 - full release
•
July 2007 – Land-Line withdrawn
How you can be involved…
•
•
•
•
be part of a focus group to verify user
requirements
be an “expert user” early adopter
be an early adopter institution
provide feedback on current use of
MasterMap
– we know OS have provided OSMM for project
work…
•
participate in online discussion forum
Issues and implications
•
•
Initial supply online…
No more “real time” data delivery for large
requests
Any other points you want to make?
Thank you
User consultation and findings in 2002
•
Star gazing exercise
•
Questionnaire survey
– Predicted use: Research 86%, Teaching 49%
– Update frequency: 40% annual, 38% twice yearly, 15%
more frequently
– 54% want access to change only updates
– strong desire for formats other than GML
– 60% felt users would need MM use training
– 50% felt users would need MM data management
training and 40% support in data management