Loglinear%20and%20Multidimensional%20Scaling%20Models%20of%20Internet%20Transactions

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Arctic GIS Workshop, Seattle Washington, 2001
Dynamic Internet Mapping and Distributed
GIServices
Ming-Hsiang Tsou mtsou_at_mail.sdsu.edu Web site
http//map.sdsu.edu Department of Geography, San
Diego State University
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Why Internet-based GIServices?

• Globalize Information Access/Exchange
• Decentralize Database Management/Update
• Distribute Software Processes

The Network is the Computer
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Development History

• Internet (ARPANET 1970s, TCP/IP 1983)
• World Wide Web (HTTP 1990, Mosaic 1993)
• On-line GIS
• The Xerox PARC Map Viewer (Putz,1994)
• GRASSLinks (Huse, 1995)
• The Alexandria Digital Library (1994)
• Organization
• The Open GIS Consortium (OGC, 1994)
• ISO/TC 211 (the 211 Technical Committee of the
  International Standards Organization, 1994)

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Problems for Internet-based GIS

• Heterogeneous Geospatial Data Format
• Vector Coverage, Shapefiles, CAD, DLG, TIGER...
• Raster GRID, IMG, LAN..TIFF, GIF, JPEG.
• GIS Database Connectivity
• large and complicated compared to other
  databases.
• can not support spatial features directly,
• Map engine on the server side to convert spatial
  features to images or vector streams.
• Map browser on the client side
• GIS Operations
• unable to provide on-line GIS operations.
• Difficult to distribute GIS procedures from one
  machine to another.

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Internet Mapping Technology

• Software Development Platform
• CORBA (Common Object Request Broker Architecture)
  OMG
• DCOM (Distributed Component Object Model) or .NET
  Microsoft
• Java Platform Sun Microsystems Inc.
• GIS Internet Mapping Solutions
• ESRI ArcViewIMS, ArcIMS,
• Autodesk MapGuide
• INTERGRAPH GeoMedia Web Map
• Small World, Internet Application Server

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Current On-line GIS Development

• What can we do now?
• On-line display (spatial features)
• On-line query (attributes)
• Very limited GIS functions. (Identifying,
  selections, buffering? ).
• On-line editing new graphs and send back to
  servers.
• What can we not do now?
• Full GIS operations (overlay, network analysis,
  3D)
• Add new layers from client-side
• Editing existing maps from client-side.
• Upload a GIS Model or procedures to server side.

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ESRI ArcIMS 3
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ArcIMS Specifications

• Platforms
• UNIX or Windows NT (2000).
• Web Server with Servlet Engine (not included)
• Application Server (Middle-ware)
• Spatial Server Database (ArcSDE)
• Technology
• Remote administration (Servlet Engine)
• Extensible Markup Language (XML) --gt ArcXML
• JavaScripts, Java applets and Servlets
• Display vector (feature server) and raster
  (image server)
• Client browser HTML version or Java applets
  version.

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ArcIMS Example
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ArcIMS Example
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ArcIMS Example
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Map Guide Specifications

• Platforms
• Windows NT or 2000.
• Web Serve IIS, or Netscape Enterprise.
• Database Connection OLE-DB or ODBC. (Microsoft)
• Oracle 8i and MS SQL server.
• Technology
• Spatial Data Files (SDFs)
• Microsoft COM-based development.
• Display vector and raster.
• Client browser HTML version (new release 5?) or
  
• Java plug-in version.

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GeoMedia Web Map Specifications

• Platforms
• Windows NT (2000) only.
• Web Server (IIS) with Active Server Pages (ASP)
• COM ODBC
• GeoMedia Data Servers --gt multiple types of data
• Technology
• Microsoft COM based technology.
• ActiveX scripting, ActiveX controls, and VB
  Script
• Client Arctive CGM plug-in (Computer Graphics
  Metafile)
• Display vector -- ActiveCGM MDF (Map
  definition Files)
• raster -- GeoTIFF, JPEG, GIF, INTERGRAPH.

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Smallworld Internet Application Server

• Platforms
• Intel chip platforms Windows NT (2000) or RedHat
  Linux 6.1.
• Web Server IIS (win), Netscape Enterprise, or
  Apache(Linux)
• Smallworld 3 core products and extended services
• Middle-ware CGI or Servlet Engine (not
  included).
• Technology
• Conform to OpenGIS WMS (Web Mapping Testbed)
  specification.
• Smallworld Magik for developing new services
• Standard Transforms. (data conversion)
• Smallworld Objec-Oriented GIS
• Client browser HTML version or Java version
• (Java applets or Java applications)

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Future Development

• Smart Mapping Software
• Intelligent Agents
• Mobile devices
• GPS / Cellular Phone/ PDA Integration
• On-line GIS functions and Modeling
• Arctic research, Hydrology modeling..
• On-line Classes
• Distance learning tools.

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The Roaming of Agent (Carry a Procedure-A)
The Planning Department
The Tax Assessor Department
Land value and parcels
Flood zone
Land use
Agent
Agent
Procedure-A
Procedure-A
CODOT
The Policy Department
Roads
Crime Risk Index
Agent
Agent
Procedure-A
Procedure-A
Dicks GIS node

• Procedure-A (from Dicks requests
• Buffer 200m from Road to create Buffer zone
• Overlay Land use Flood zone, Buffer zone,
  and Land parcels, Crime Risk Index.

Agent
Procedure-A
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Cross-Platform GIServicesGPS navigation with
Palm-size PC.
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On-line GIS Classes and Lab Exercises
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Http//map.sdsu.edu