Using standard Web technologies to share GIS data online

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Using standard Web technologies to share (GIS)
data online
Maurits van der Vlugt Jonathan Doig OpenGIS
Suppliers ESRI, Xmarc, Social Change Online,
MapInfo, Intergraph
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Agenda (1st half)

• 1pm Welcome agenda Why open standards?
• Technical Overview
• 110 OpenGIS architecture
• 115 The OpenGIS web mapping specifications
• 125 Standards-based implementations over NSW
• Getting your data online
• 135 1. steps options
• 145 2. freeware case study
• 210 AFTERNOON TEA

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Agenda (2nd half)

• OpenGIS-compliant products/services
• 230 ESRI Quill Williams
• 250 Xmarc (formerly Formida) Robert Christie/Roy
  Hill
• 310 Social Change Online Maurits van der Vlugt
• 330 MapInfo Ashley Crane
• 350 Intergraph Norah Boyle
• 4pm Close

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Why open standards?

• Value of the network
• Use each other's data in situ
• Seamlessly integrate link our information
  products
• Avoid the need to centralise, so we can control
  our own data for security, Quality Control and
  updating

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Technical Overview

• The OpenGIS Architecture
• OpenGIS Webmapping Specifications
• www.opengis.org

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The OpenGIS Architecture

• From systems to services
• ACORN Services (network addressable components)
• Applications, Catalogs, Operators, Repositories,
  Network
• Agreements (standards)
• Protocols (HTML, XML, )
• Component interfaces (OGC)
• Semantics (Metadata schemas, Controlled
  Vocabularies, Business rules, etc.)

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ACORN-services
Repositories - Data storage and access. Catalogs
and Brokers - Elements that find and access
resources on a distributed network. Operator and
Models - Processes that operate on information,
also methods to describe these processes. Applicat
ions Shared components such as viewers,
editors, discovery clients and others.
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How does it work?
Interfaces based on the OpenGIS Specification
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How does it work?

• The buzzwords (TLAs)
• WMS (Web Map Server)
• WFS (Web Feature Server)
• G3 (Geoparser, Gazetteer, Geocoder)
• LOF (Location Organising Folder)
• XML (Extensible Markup Language)
• GML (Geographic Markup Language)

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OGC Specifications (1)

• WebMap Specifications released (XML, CGI)
• (see http//www.opengis.org/techno/specs.htm)
• Catalog Interface
• Web Map Server (WMS)
• Geography Markup Language (GML)
• Other (non-webmap CORBA, SQL, etc.)
• Simple Features
• Grid Coverages
• Coordinate Transformation Service

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OGC Specifications (2)

• Current work (Webmapping)
• Web Feature Server (WFS)
• GML 3
• 3G Gazetteer, Geocoder, Geoparser
• Location Organiser Folder (LOF)

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NSW OpenGIS services CANRI architecture

Network
Applications SGUI app-builder
Operators broker, renderer, reprojection
Catalog exploring OpenGIS standard
Free data Repositories DSLITE, MapServ
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NSW OpenGIS services CANRI data suppliers

• Australian Museum
• Dept of Information Technology Management
• Dept of Land Water Conservation
• Dept of Mineral Resources
• Dept of Urban Affairs Planning
• Environment Protection Authority
• National Parks Wildlife Service
• NSW Agriculture
• NSW Fisheries
• Royal Botanic Gardens
• State Forests of NSW
• and many more

gt80 datasets and growing...
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NSW OpenGIS services CANRI base maps

• Now
• AUSLIG scanned topographic maps 1250k, 1100k
• Limited topographic vector layers
• Soon
• Landsat7 satellite imagery
• LPI scanned topographic maps 150k and 125k

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NSW OpenGIS services (Inter)national

• US-based
• NASA, Digital Earth, Geography Network, FGDC
• Australian
• CSIRO Division of Exploration Mining
• Commonwealth pilot, ASDI Technical WG

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NSW standard catalog services ASDD

• Interoperable network of data directories
• Uses ANZLIC metadata standard
• gt25000 records in 22 nodes
• Natural Resources Data Directory (NRDD) in NSW
• Will adopt ISO 19115 standard
• ASDI TWG to consider OGC catalog support?

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Getting your data online

• Steps and Options
• Serving your data
• Making it discoverable
• Creating metadata
• Registration
• View and add value!
• Case study

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My Organisation
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Step 1 Serving your data

• Install data server
• Instructionshttp//www.canri.nsw.gov.au/tech/inde
  x.html
• Free data server DSLITE or MapServ/MapWrap
• (Free) WMS wrappers for ESRI, MapInfo, SICAD,
  Intergraph, GE-Smallworld,
• (see OGC installation overview
  http//www.opengis.org/techno/conformance.htmimpl
  ementations)

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Step 2 Make it discoverable

• Register with NRDD (get ANZLIC ID)
• Create metadata record online
• Register with CANRI

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Step 3 View and add Value

• View your data using the NRA (or local
  application)
• Find other data sources
• Add them to your view!

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Case study DLWC Regions
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My Organisation
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Serve the data to the web

• Shapefiles (ArcExplorer)
• Serve up using MapServ/Mapwrap
• Download from http//webmap.socialchange.net.au/pr
  oducts/freeware.html
• Result network addressable WMShttp//is.dlwc.ns
  w.gov.au/cgi-bin/fornet3/dlwc.pl?objectdsds.meth
  odgetimageds.getimage.formatGIFds.getimage.lay
  erdlwc_regds.getimage.context.extent140.5,-37.8
  125,154.0,-27.6875ds.getimage.context.projection
  AGD662FGeographicds.getimage.size400,300ds.get
  image.filterds.getimage.symiconds.getimage.sym
  stylenostyleds.getimage.label

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My Organisation
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Make it discoverable

• NRDD (part of ASDI/ASDD)
• http//www.nrims.nsw.gov.au/nrdd/index.html
• Generate ANZLIC metadata record (METOnline)
• Look like this
• Generate CANRI specific metadata online
• Get access from DLWC administrator
• Register online metadata using the metadata
  manager http//is.dlwc.nsw.gov.au/icmiss/manage/l
  ogin.html

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Search Discover!

• Go to the Natural Resource Atlas (CANRI) and
  view your data in combination with others !!

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Teatime, any questions?

• Please visit http//canri.nsw.gov.au
• for more information and examples.
• Or contact us at
• webmap_at_socialchange.net.au