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OS PAI Conference 2003

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					OS PAI Conference 2003
Positional Accuracy and the
Importance of Change Management


Colin R Smith
Computer Mapping Centre Manager
Land Registry Information Systems Directorate
Agenda

–Positional Accuracy Improvement
     Summary of LR Experience


–Importance of Change Management
   LR   View and Challenges for All


–Your Questions

              OS PAI Conference 2003 - 26 November 2003
Positional Accuracy Improvement

–Impact of PAI on LR Index Map

–LR Strategy for Handling PAI

–Implementing a PAI Solution in LR



            OS PAI Conference 2003 - 26 November 2003
Impact of PAI on LR Index Map
–IM data: polygons + seedpoints + titles




            OS PAI Conference 2003 - 26 November 2003
Impact of PAI on LR Index Map
–Approximately:
   500,000 Quadrants affected by PAI
   9 million Polygons affected by PAI
   15 million SeedPoints affected by PAI
   350 million Link Points


–Risk of Incorrect Search of IM Result

            OS PAI Conference 2003 - 26 November 2003
  Impact of PAI on LR Index Map
– IM Unsynchronised with PAI Map - danger of Index Map
  polygon in wrong building




                OS PAI Conference 2003 - 26 November 2003
  Impact of PAI on LR Index Map
– Unsynchronised AddressPoint - danger of Seed and Title
  Number in wrong building




                 OS PAI Conference 2003 - 26 November 2003
LR Strategy for Handling PAI

–Immediate - Business as Usual
   “Freeze”   IM in pre PAI state

   SIM   Results Assured

   IM   Vectorisation Continues

   New   Title Registration Continues

               OS PAI Conference 2003 - 26 November 2003
LR Strategy for Handling PAI

–Long Term - Develop PAI Solution
   Fully   Automated System!

   Minimal    User Intervention

   90%     Auto Polygon Shift

   100%     Auto SeedPoint Shift

                OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Task
   Define   Polygon Shift „Rules‟ for LR

   Build   1000 Test Cases „before and after‟

   Iterative   Development of PACM

   Develop     Front and Back End Systems

                OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–Development Issues - 1
   Pre    PAI and PAI Map Versions

   Link   Points and Link Files

   Polygons    on/across Tile Edges

   Real    World Change v PAI Change

               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–Development Issues - 2
   PAI Map and AP Synchronisation
   Partially and Undefined Polygons




             OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–Development Issues - 3
   Consistency   of Polygon Relationships




             OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–Development Issues - 4
   Map   Data Differences & Generalisations




               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR
–Development Issues - 5
   Incomplete   PAI blocks




             OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–Development Issues - 6

   Supplementary        Delivery Control System

   Iterative   Development of PACM

   Develop     Front and Back End Systems



                 OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 1
   Pre   Delivery List from OS

   Resolve   Discrepancies

   Electronic   Delivery of Listed PAI tiles

   Check   for Completeness

               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 2
   LR HQ Senior User Plans PAI block release to
    Local Office „queue‟

   Pre PAI Tiles, PAI Tiles & Link Data to Local Office
    Server

   Polygons   & SeedPoints copied to DB Work Tables


               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 3

   Local Office User fires the „Shift‟ process per tile
    per block

   Software
           passes all data to Tenet PACM
    component



               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 3 cont
   Colour   Coded „Confidence‟ Results Set




               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 3 cont
   Local   Office User reviews Results Set

   Accept   or Amend using Mapping tools

   Commit    Results Set to DB Work Tables

   User   starts on Next Tile in the Block

               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 4
   Finalised   Results Set copied to Live Tables




                OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 4 cont

   Replace   Existing IM with New PAI Map

   Archive   Original Polygons & SeedPoints




               OS PAI Conference 2003 - 26 November 2003
Implementing a PAI Solution in LR

–The Developed System - Stage 5

   Run    AddressPoint Update Load

   All   Data now Synchronised !!

   Repeat    until PAI Programme Finishes !!


                OS PAI Conference 2003 - 26 November 2003
Importance of Change Management




 A PAI Wake Up Call from the AGI Workshop




          OS PAI Conference 2003 - 26 November 2003
Importance of Change Management

–PAI Workshop – the Delegates View:
   PAI   caused “A crisis in Spatial Data Management”
–Reality View:
   Change  has always been happening – you‟ve just
    chosen to ignore it
–Fact:
   Only10 out of 130 organisations have Spatial Data
    Management processes in hand

               OS PAI Conference 2003 - 26 November 2003
Importance of Change Management

–What Geo Assets do LR Manage

–Why Change Management is Important

–How do LR Manage Change

–Change Management Challenges
          OS PAI Conference 2003 - 26 November 2003
Geo Assets Managed by LR

–Index Map (England & Wales)
   OS LandLine Map – 633,000
   Property Polygons – 22 million
   Seedpoints – 30 million


–Land Registry Property Gazetteer
   Addresses – 27 million
   UPRN‟s – 27 million

             OS PAI Conference 2003 - 26 November 2003
Geo Assets Managed by LR
– Title Plans
      Vector Plans – 2.29 million
      Raster Plans – 18.02 million
      Paper Plans – 0.27 million

– OS Landline Maps (for title plan purposes)
      Latest version – 633,000
      Historic versions – 1.64 million


– County Series Maps (for reference purposes)
      Historic versions – 118,000
                   OS PAI Conference 2003 - 26 November 2003
Why Change Management is Important

–Index Map and LRPG
   Geo key that unlocks the Title Number
   No Title Number = No Conveyancing
   10,000 Searches of Index Map issued daily


–Title Plan
   Guarantees    the Extent of the Owners Title
   Proof of Title for Conveyancing Purposes
   18,000 Official Copies issued daily

              OS PAI Conference 2003 - 26 November 2003
Why Change Management is Important

–OS Landline Maps
   Latest version used for Title Plan creation
   No OS Map = No Registered Title Plan
   Historic maps used for tracking boundary change
    and proof of title investigations
   County Series – same history purpose




             OS PAI Conference 2003 - 26 November 2003
Why Change Management is Important

–Up to date data is key to business
   Conversion    from Paper to Electronic form –
    lengthy, costly and resource hungry
   Relax!! It‟s all converted…….or is it?

–Maintenance:
   Easy to ignore or circumvent housekeeping
   Constant change to OS Map and Address data
   Constant change to Geo assets by business
    events
             OS PAI Conference 2003 - 26 November 2003
Why Change Management is Important

–Will Geometry & Data Differences Matter?
   Will
       your polygon synchronise with mine?
   What version OS map have you built it on?
   What version OS map are you now using?
   What address have you linked it to?
   What alternative address(es) are linked to it?
   What unique identifier (UPRN, TOID) will you use?




             OS PAI Conference 2003 - 26 November 2003
Why Change Management is Important

–Will Geometry & Data Differences Matter?
   Willyour mix of LandLine and Historic scanned
    maps with data overlays be a barrier to joined up
    government?
   Why aren‟t you considering the Pan Government
    Agreement as a way of establishing a common
    backdrop?

   Can    we communicate about the same data?

               OS PAI Conference 2003 - 26 November 2003
Managing Geo Asset Change in LR

–General Strategy:
   Geo  Asset Change is a fact of life
   Policies should exist to manage change in a co-
    ordinated way
–LR Approach:
   Tie in change policies to meet today‟s business
    needs
   Allow for tomorrow‟s business needs
   Allow for wider, GI community needs
             OS PAI Conference 2003 - 26 November 2003
Managing Geo Asset Change in LR

–Index Map:
   Underlying OS map updated locally for minor
    change or replaced where major change dictates
   LR Polygons adjusted to optimum pictorial fit
   Seedpoint positions adjusted if necessary
   Archive the superseded data
–Drivers for Change:
   Registrationof new title extents
   Updates from OS and LR Surveyors

             OS PAI Conference 2003 - 26 November 2003
Managing Geo Asset Change in LR

–Land Registry Property Gazetteer:
   Address   database updated as change arises
   Alternative addresses and history retained
   UPRN‟s preserved and maintained.
   National UPRN‟s maintained (if available!)
–Drivers for Change:
  3 monthly AddressPoint Updates from OS
   Registration of new title Address information
   Local Authority Address info (if available!)

              OS PAI Conference 2003 - 26 November 2003
Managing Geo Asset Change in LR

–OS Landline Maps:
   All new or changed survey detail taken as change
    arises
   Latest version always held by each LR Office
   Archive the superseded version

–Drivers for Change:
  1 Unit of Change = New version (250 per day)
   Latest map used for every new title plan


             OS PAI Conference 2003 - 26 November 2003
Managing Geo Asset Change in LR

–Title Plan:
   Frozen in time – in most cases
   Updated where localised change is needed
   Replaced where change dictates
   Archive the superseded Title Plan

–Drivers for Change:
   Triggeredby new registrations or correspondence
   Customer expectations ?

               OS PAI Conference 2003 - 26 November 2003
Change Management Challenges
–Key Challenges
   Keep  base data at optimum level of Update
   Maintain Asset Data Quality & Integrity
   Maintain Map and Address synchronisation
   Keep the history of change to Geo Assets
   Develop open systems to support future searching
    and interoperability requirements
   Prove Geo Assets are „Fit for Purpose‟



             OS PAI Conference 2003 - 26 November 2003
Change Management Challenges
–Those Awkward Questions
   Have  you reviewed your data update delivery
    cycle?
   What resources have you allocated to Geo Asset
    change management?
   Will geographic differences hamper your e-
    business plans tomorrow?
   Do you have a Strategic Plan for Maintaining your
    Geo Assets?

             OS PAI Conference 2003 - 26 November 2003
Change Management Challenges
–No Strategic Plan ??
   Define the present and future business needs for
    maintaining your Geo Assets
   Analyse what is to be done to how to achieve it
   Determine the resources needed to get there and
    maintain that position
   Get buy-in from the data owners
   Prepare a business case and project plan
   Get Executive approval and funding for your plan

             OS PAI Conference 2003 - 26 November 2003
Change Management Challenges
–Key Challenges

   Establish   a Change Management Regime

   Maintain   your Geo Assets

   It   is a BUSINESS issue



                OS PAI Conference 2003 - 26 November 2003
And Finally………
 …. a Message for Managers

 Change your Undies !
        UNmaintained
            Data
             In
               Electronic
                 Systems
           OS PAI Conference 2003 - 26 November 2003
Your Questions




                     Thank you




          OS PAI Conference 2003 - 26 November 2003

				
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