Access to Land Information WWW, WAP

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Access to Land Information WWW, WAP
451-418 Land Administration

• Jessica Smith
• PhD Candidate

Lecture Date 18 April 2002
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Objective

• To understand the issues involved with accessing
  spatial, land related information using the
  Internet.

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Topics

• Digital Environment
• Data Archival
• Privacy and Data Ownership
• Current Status Fixed line Internet Access
• Example Online Cadastral Systems
• Current Status Wireless Internet Access
• Example Location Based Services

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Introduction

• Increasing accessibility to spatial information
  due to new technologies
• Traditional role of the cadastre
• Support the land market
• Changing role of the cadastre
• Developing SDIs as a contributor to land related
  data
• Incorporate additional information (refer to
  Cadastre 2014)

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Digital Environment

• Data in digital form
• Easy access to a range of information
• Digital data handling strategies

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Digital Environment

• Current Internet technology permits
• access to digital custodian data
• data submission
• complete digital handling of data
• efficient handling of digital data

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Data Archival

• Good land administration requires access to good
  land information
• (Dale, 1999)

• Digital storage of data
• Backwards compatibility?

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Privacy and Data Ownership

• Data ownership
• who may access the data?
• who may add value to the data?
• Land Market issues
• Data integration
• use vs. ownership rights
• Data rich vs. data poor

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Current Status
Fixed Line Internet

• Data presentation systems
• One-way flow of data
• Two-way data flows
• Application Service Provider model

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Current Status
Fixed Line Internet

• GIS/mapping software package
• MapInfo, AutoCad Map, ArcView, etc.
• Map Servers
• Autodesk MapGuide, ESRI ArcIMS, etc.
• Displayed on Internet-enabled machines

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I NTERNET / INTRANET / EXTRANET - TCP/IP PROTOCOLS
TCP/IP PROTOCOLS
MAP SERVER e.g MapGuide, ArcIMS, MapExtreme
DATABASE QUERY SERVERS e.g. ColdFusion, ASP, JSP
ODBC / OLE / ORACLE CLIENT
Cadastre Database Server
Cadastre Attributes
Cadastre Files
Line, Point, Poly ID
Line, Point, Poly ID
DESKTOP / ENTERPRISE GIS e.g. ArcView, MapInfo
(Majid, 1999)
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BROWSER
WEB SERVER
SPATIAL DATABASE SERVER
MAP SERVER
CADASTRAL LAYERS
ATTRIBUTE DATABASE
(Majid, 1999)
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Current Status
Fixed Line Internet

• Development initiatives
• Global
• Open GIS Consortium (www.opengis.org)
• Global Spatial Data Infrastructure (www.gsdi.org)
• UN/FIG
• Cadastre 2014 (www.swisstopo.ch/fig-wg71/cad2014.h
  tm)
• Local
• Australian World Wide Web Mapping Consortium
• Australian Spatial Data Infrastructure

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Current Status
Fixed Line Internet

• Rapid Internet advancements
• Distributed Processing Architectures
• ActiveX, Java
• Post HTML
• XML
• Server-side scripts
• ColdFusion, ASP, JSP
• Plugins and Viewers

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Current Status
Wireless Internet

• What the personal computer did for GIS,
  wireless and mobile technology will do for the
  acquisition and dissemination of geospatial
  information, opening up the opportunities for use
  by a bigger clientele.
• (Siteur, 2000)

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Current Status
Wireless Internet

• Online Cadastre on Wireless Devices
• Utilising Personal Desktop Assistants (PDAs)
• used by telcos to deliver work orders based on
  geographic or cadastral maps
• measure bearing, areas, distances
• GPS compatible
• hotlink to databases and reports
• Autodesk OnSite View
• Esri ArcPad

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Current Status
Wireless Internet

• Optus/Geomatic Technologies Location Based
  Services
• (still in testing)
• Uses GSM WAP
• Wireless MarkUp Language (WML)
• created using ColdFusion
• finds the nearest
• service station
• hospital
• calculation of bearing and distances
• delivers raster map contents

(Majid, 2001)
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Current Status
Wireless Internet

• Demo wap.whereis.com.au

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Exam Questions

• Discuss the features and role of on-line
  cadastral systems.
• Discuss the impact and benefits of on-line
  technologies on traditional cadastral systems.