Transcript Introducing OS MasterMap Challenges of new data for Digimap Emma Sutton EDINA Geoservices Support.

Introducing OS MasterMap
Challenges of new data for Digimap
Emma Sutton
EDINA Geoservices Support
Introduction
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Land-Line is being replaced by OS MasterMap
Topographic Layer
Digimap will need adjustments to cope with
this change
OS will withdraw support and licences for
Land-Line on 30 September 2008
What is OS MasterMap?
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“OS MasterMap is a digital representation of the real
world containing more than 450 million uniquely
identified geographic features. It is updated daily as a
consistent framework for the referencing of
geographic information in Great Britain.“*
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A framework rather than a single dataset
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Framework comprises various Layers: Topographic,
ITN, Imagery, Address
Each Layer comprises a series of Themes
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*www.ordnancesurvey.co.uk
What’s better about OS MasterMap?
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Land-Line is a digital cartography product–a map
designed to be viewed on a computer
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OS MasterMap is not just about mapping
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OS MasterMap Topography Layer is a feature-based
dataset; many of the features correspond to realworld objects
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Each feature has a unique identifier called a TOID®
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Allows you to build data associations and to more
easily exchange information with other people or
organisations
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As a feature changes to reflect changes to the realworld object it represents, its TOID may remain
unchanged, according to well–defined feature life–
cycle rules
Timetable for transition
16 January 2007
Pilot service launch to Early Adopter
Institutions
January – August 2007 Ongoing feedback
31 August 2007
End of Early Adopter Programme
September 2007
OS MasterMap available to all
subscribers
September 2007 –
August 2008
OS MasterMap and Land-Line both
available
August 2008
Land-Line withdrawn from Digimap
completely
A process of integration
Early Adopter Programme to trial OS
MasterMap data and delivery facilities
• Early Adopter institutions have access to the
new MasterMap Download facility
• Users at these institutions should expect to
use MasterMap data where previously they
might have used Land-Line data
• Land-Line continues to be available until
August 2008 (2006 version only)
• Feedback requested from end users directly
and from site support staff
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Who’s involved?
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7 Early Adopter institutions are:
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Kingston University
Leeds University
Liverpool University
Liverpool Hope University
University of the West of England (UWE)
Oxford University
University of Central Lancashire
Aims of the Early Adopter Programme
For EDINA
• To learn about the technical issues
encountered by institutions when using
MasterMap data for the first time
• To assist with the development of
appropriate tools
• Usability testing
• To identify the support needs of institutions
when moving from using Land-Line to
MasterMap
• To learn about the implications of MasterMap
for teaching and research
Aims of the Early Adopter Programme
For institutions
• To identify new hardware and software
requirements for being able to use
MasterMap data
• To identify potential changes required for
organising classes and teaching materials
• To become accustomed to using MasterMap
whilst operating with the comfort of LandLine back-up
• To assist EDINA in developing appropriate
support systems to assist other subscribing
institutions to adopt MasterMap data
What changes are being made?
Mapping
• all Land-Line maps will be replaced with OS
MasterMap Topographic maps
Classic will look and operate as usual
Carto will look and operate as usual
BUT Product combinations may differ
MasterMap Download – New!
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MasterMap
Download is a
NEW facility
which will offer
only OS
MasterMap
data
Existing Data
Download
facility remains
the same
Search for area of interest
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Usual search
tools
available to
locate area of
interest
Select area of interest
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Select area of
interest using one
of:
– drag-box
– coordinates
– point-and-buffer
Summary Information
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Extent Summary
– Shows the extent of
the data selected
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Sample Content
– at the moment only
shows
representative data
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Request Name
– Enter a name if you
want to save the
request for later
Data Delivery Settings
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Archiving
– Unix, PC, Mac?
– Single or separate
files?
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Compression
– Data will always
be compressed
with gzip
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Format
– Data will be in
GML format
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Type of Supply
– For the moment
only Initial Supply
is available
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EMAIL ADDRESS!
– Is it correct?
– Edit if necessary
prior to ordering
data
Data Delivery
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Check your email!
– You will be sent an email when your data is ready
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View Your Account
– For progress information or to change your email go to Your
Account page
Collecting your data
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User receives
email when
data is ready
for collection
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Go to My
Account, enter
code from
email and save
data link as
usual
Change-only Update
OS MasterMap will be updated using Changeonly Update
• EDINA will take changes from OS every 6-8
weeks
• Practically, we will offer once, twice or 4times a year updates…
• Frequency of update to users has yet to be
decided… how often would YOU like the data
updated?
• Users can take either complete re-supply
(including changes) or JUST the changes
(Change-only Update or COU)
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Key implications of OS MasterMap
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File sizes are considerably larger than existing
NTF data
– implications for disk storage and network traffic
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Maps now include filled polygons which will print
better in colour than in black and white
– how widespread is the availability of colour printers?
– implications for printing costs
– implications for ink usage?!
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Latest versions of GIS and CAD software will be
required to manage new data format (GML)
User email addresses must be correct on
registration or data cannot be delivered to them
Other things to note
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OS MasterMap Layers are “just another”
dataset added to Digimap
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2006 Land-Line data will be available until
August 2008, but will not be updated
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Terms of Use for OS MasterMap are identical
to those for other data
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Check the further information on our website
at:
http://edina.ac.uk/mastermap
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Any questions…?