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.

http://qarmx.dottedeyes.com:8080/ldl/client/ldl/mapviewer/mapviewer.jsp?requesturl=http%3A%2F%2Fqarmx.dottedeyes.com%3A8080%2Fldl%2Frmx&geoset=2006&centerx=325730&centery=673520&zoomwidth=300000&submit=Launch

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?