managing ordnance survey geospatial data in the uk legal deposit libraries
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Managing Ordnance Survey geospatial data in the UK legal
deposit libraries
Chris Fleet Deputy Map Curator National Library of Scotland
Kimberly Kowal Curator of Digital MappingThe British Library
Maintaining Long-term Access to Geospatial Data workshop 27 October 2006
UK Legal Deposit Libraries
• The British Library
• Bodleian Library, Oxford
• Cambridge University Library
• National Library of Scotland
• National Library of Wales
• Trinity College, Dublin
UK Legal Deposit Libraries Act 2003
• For the deposit of digital materials, this was an ‘Enabling Act': i.e. it gives the force of law to suitable future Regulations, but has no effect until these have been drawn up and approved.
• No precise timetable for when Regulations for different types of material will be passed
Voluntary Deposit (VDep)
OS digital data contracts
Isn’t this data already being archived?– The Ordnance Survey?
– The National Archives?
– EDINA?
Repositories in the Legal Deposit Libraries
Repositories in the Legal Deposit Libraries
Providing a generic and cost-effective infrastructure for the Library’s digital material that will
take in material of many types
take in material coming from many sources
store it all securely for the long term
allow controlled access
endure
The current budget is £1.5m per year.
The Digital Object Management Programme (DOM)
July 2006: project initiated with funding from the Scottish Executive
A range of digital data, including items:• received under legal deposit legislation • from other Scottish cultural institutions• digital images of NLS collections NLS TDR
The current budget is £1.8 million for development over two years.
Repositories in the Legal Deposit Libraries
Trusted Digital Repository (TDR)
• Cambridge DSpace
• FEDORA at the National Library of Wales
Repositories in the Legal Deposit Libraries
Software 1 - standalone customised version of MapInfo –
1999-2006
•Background - OS microfilm technology not Millennium Compliant
•Customisation of original Land-Line Viewer in 1998
•Standalone desktop application - customised version of MapInfo
•Annual snapshots received from OS - after complete snapshot in 1999, only amended/changed tiles converted to MapInfo in application
•Metadata / Data management through MapInfo catalogue table
•Storage of original National Transfer Format (NTF) data and converted MapInfo TAB files (using TranspOSe)
Software 1 - standalone customised version of MapInfo –
1999-2006
•Background - OS microfilm technology not Millennium Compliant
•Customisation of original Land-Line Viewer in 1998
•Standalone desktop application - customised version of MapInfo
•Annual snapshots received from OS - after complete snapshot in 1999, only amended/changed tiles converted to MapInfo in application
•Storage of original National Transfer Format (NTF) data and converted MapInfo TAB files (using TranspOSe)
•Metadata / Data management through MapInfo catalogue table
Software 2 - networked customised version of ResponseMX - 2006-
•Background - need to migrate from Land-Line to OS MasterMap
•Detailed review of software, hosting and archiving options - 2005
•Need for formal LDL approval and importance of minimising costs
•European Union procurement - 'restricted procedure' - Jan - May 2006
•Dotted Eyes' ResponseMX - based on MapXtreme and using Flash.
Web mapping application
LDL LDL LDL LDL
LDL LDL
GML/GZIP loading software
Middleware
D a t a b a s e
OS MasterMap application model architecture
Software Purchase Price
Maintenance Price (in £1,000s
Standards - GML
Standards - OGC
Relevant Experience
East of customisation/maintenance/support
Proven/ long-term future of company
Long-term durability/migration of applicatio
Simplicity of architecture
Scalability/ Robustness
Autodesk £108-185 +DB
£20
Cadcorp £76-77 +DB
£13
Dotted Eyes
£25 £5
ESRI £56-67 +DB
£8
GDC £86 £17-19
GeoConcept
£38-48
£3
Innogistic £49-52
£5
Intergraph £97 +DB
£17
IONIC £88-98
£10
Laser-Scan
£120 £20-30
MapInfo £47-51 +DB
£10
SIA £13 +DB
£13
STAR-APIC
£40-43 +DB
£8-10
Software 2 - networked customised version of ResponseMX - 2006-
•Background - need to migrate from Land-Line to OS MasterMap
•Detailed review of software, hosting and archiving options - 2005
•Need for formal LDL approval and importance of minimising costs
•European Union procurement - 'restricted procedure' - Jan - May 2006
•Dotted Eyes' ResponseMX – also using MapXtreme and Flash.
Software 2 - functionality and content – 2006-
•Negotiation with OS on functionality, use of small-scale mapping and OS MasterMap layers
•NTF (1999-2005) and GML (2006-) annual snapshots converted to MapInfo TAB files (using TranspOSe and InterpOSe)
•Duplicated annual snapshots - not a growing database of feature-level information
Open Non-proprietary Authentic Flexible
Land-Line (NTF)
OS MasterMap (GML)
Proprietary GIS
Database (flat-file - NTF)
Database (objects - GML)
Data Formats - Archival qualities of Land-Line and OS MasterMap formats for storage and use
Some Questions!
•Are snapshots acceptable archivally compared to a growing, managed repository of tiles and features?
•Is an annual snapshot a sufficiently comprehensive record of landscape change?
•When should we migrate NTF data, and to what?
•What metadata should be used for geospatial data in our LDL repositories?
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