WALIS Cadastre Strategic WALIS Cadastre Strategic Directions WorkshopDirections Workshop

Matt Devlin

Kerry SmythKerry Smyth

Matt Devlin

What Do We Get?What Do We Get?

Cadastre Quarterly UpdatesCadastre Quarterly Updates•Norm Files – Graphic (51 Order Areas)•Norm Files – Tenure (3) State, Christmas Island, Cocos-Keeling Islands•Shape File – Graphic (3) Lines, Point, Poly•Lodged Layer (Weekly) (3) Lines, Point, Poly

What Do We Do?What Do We Do?

Cadastre ProcessingCadastre Processing•Create Graphic Titles (1157) (Arc Info Coverage)•Create Layer (1) SDE•Create Various Themes (13) (eg Ownership, UCL, Area Classifications, Easements)•Create Tenure Tables (2) (Info – GIS Ownership, DOLA Reserves)

What Have We Done?What Have We Done?

Realignment to 28 May-2010 – CadastreRealignment to 28 May-2010 – Cadastre

•Corporate - 12x Datasets (1000) Layers - Maprite

•Local Planning Schemes – 150x Datasets (1500 layers) - Landgate Technique

•Provided to SLIP

What Are We Doing?What Are We Doing?

Realignment to 30-June-2012 Cadastre – 1.4m LinesRealignment to 30-June-2012 Cadastre – 1.4m Lines

•Determine Alignment Method - Maprite or Landgate Technique•Revisit Previously Aligned Datasets – 162x Datasets (2500 Layers)•Align Additional Datasets – 150x Datasets (500+ Layers)

Example: Post 2010 Realignment issue

Lessons LearnedLessons Learned

• Each method of realignment still requires a substantial degree of editing

• Each method of realignment is performed over relevant sections, not State-wide

• Processing times and accuracy can vary• Landgate and DoP have collaborated well in

achieving results

BeforeBefore AfterAfter

BeforeBefore AfterAfter

Maintaining Alignment OptionsMaintaining Alignment Options1. Chasing Option1. Chasing Option•DoP uses Maprite to intermittently determine shifts, realign and refresh its datasets OR•Landgate provides regular change vectors so DoP can realign and refresh its datasets.

2. Landgate Split Dissemination Option2. Landgate Split Dissemination Option•Landgate provides daily (near real-time) content updates from a dissemination database without incremental positional adjustments AND.•Landgate provides regular scheduled change vectors so everyone can realign and refresh its datasets at the same time.

3. Integrate Zoning into SCBD Option3. Integrate Zoning into SCBD Option•DoP Zoning is integrated into the SCDB; DoP has access and editing privileges or Landgate does this process for DoP.•DoP’s unsurveyed delineators are absolutely defined (eg gps coordinated) rather than off-set defined from the cadastre)•Continuous Realignment on the fly option (GD2 Solution)

Issues for ConsiderationIssues for Consideration1. Data Management Issues 1. Data Management Issues •Frequency and scheduling content of updates (ie new lots) •Frequency and scheduling of positional accuracy adjustments (ie moving existing lots) •Data structure models for analysis •Our GIS Directions Program intends to maintain boundary linkage at the time of each data edit so once implemented there would be no need for periodic re-alignments. •MRS/ unsurveyed boundaries to be defined by coordinated GPS rather than the current offset/ dimensions method.

Issues for ConsiderationIssues for Consideration2. Data Access Licences Issues 2. Data Access Licences Issues •Degrees of access including via Landgate’s Mapviewer •Legacy access to the tenure / property ownership •Improved integration with the Valuation Datasets

3. Product Creation 3. Product Creation •Inclusion in derived products• Content (eg PSMA Cad lite, Land parcels greater than 1ha) various offerings available •Positional accuracy in regional areas and aboriginal communities •Positional accuracy in sync with aerial photography accuracy

Future Initiatives /Ideas Future Initiatives /Ideas • Strata Lots • 3D cadastre • Underground and aerial above ground easements and

cadastral boundaries • Assignment of land-use in multi-story strata buildings • Attributing land-use / zoning in the cadastre • Integrated Planning /cadastral data so attribute of Land

Parcel • Aboriginal Community Land Parcels included in SCDB• Easements

End of PresentationEnd of Presentation

ThankyouThankyou