MasterMap David Medyckyj-Scott Emma Sutton Tim Urwin.

MasterMap

David Medyckyj-ScottEmma 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 Bounding Box

Chunk Extent

Integrated Transport Network

• ITN links reference the Topography Layer

TOID 4000001298764523Version 1Change Date 310303

Descriptive Group Road TopologyDescriptive Term Local StreetNature of Road Single CarriagewayLength 42

Start Node 4000004756364758End Node 4000009857364528Reference to Topo 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 supplyMust• 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

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

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

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