ISIG/WEBA Web-based Tool for

Viewing and Editing Maps

Month/2004

Gustavo Mandolesi – Software Engineer

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Objective

Present an overview of ISIG/WEB by highlighting its

main functions and benefits within the context of

web-based GIS applications.

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Contents

Introduction System components Architecture Demonstration Conclusion

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Introduction

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What is ISIG/WEB ?

It´s a software prototype for editing maps on the web

Result of a research project named ISIG

• “Inovação em Sistemas de Informações Geográficas”

• GIS Innovation

Sponsored by FUNTTEL

• Fundo para desenvolvimento Tecnológico das

Telecomunicações

• Fund for the Technological Development of

Telecommunications

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On the Web...

Main features

• Map visualization

• Edition of georeferenced objects on maps

• Edition of map style (symbology)

All over HTTP !

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Based on Open Standards

Open Geospatial Consortium (OGC) standards

• WMS – Web Map Service

• WFS – Web Feature Service

• SLD – Styled Layer Descriptor

• GML – Geographic Markup Language

World Wide Web Consortium (W3C) standards

• SVG – Scalable Vector Graphics

Java / J2EE

JavaScript

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System Components

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User Interface Modules

Map Viewer/Editor

• Visualization of SVG maps

• Thin client

• Web application (browser)

Style Editor

• SLD graphical or textual edition

• Fat client

• Desktop application

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Service Modules

OGC Servers

• No interface, services only.

• Web Map Server (WMS)

• Web Feature Server (WFS)

XSLT Transformer

• GML + SLD SVG

Geographic Database Server

SERVICES

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Who´s who

Map Viewer/Editor

• Internet Explorer 5.5

• Adobe SVG Viewer 3.0 (freeware plugin)

• Javascript

• Server-side components (Servlet´s and JSP´s)

Style Editor

• Java Swing (multiplatform)

• Java Web Start technology downloaded via browser

• Uses Apache Batik SVG Toolkit to build map symbols

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Who´s who

Web Map Server

• deegree WMS 1.1.2

• Official reference implementation for the

OGC WMS 1.1.1 specification

• Java / J2EE

Web Feature Server

• deegree WFS 1.2.3

• Based on OGC WFS 1.0.0

• Java / J2EE

Oracle

WEB WEB

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Who´s who

XSLT Transformer

• Xalan (Java) 2.6.0

• Implemented as a HTTP service (Java Servlet)

Geographic Database Server

• Oracle Spatial 9.2

Oracle

WEB WEB

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Architecture

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Architecture

OracleOracle

SpatialSpatial

deegreedeegree

WFSWFS

deegreedeegree

WMSWMS

XSLTTransformer

(GML + SLD = SVG)

WFStransactions

SVGmaps

GMLfeatures

Map Viewer/Editor Style Editor

SLD-related services

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Architecture

Distributed Service-oriented

WEB

WMS

WFS

Web applicationserver

RDBMS

HTTP

HTTPHTTP

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Architecture

Distributed Service-oriented

WEB

WMS

WFS

Web applicationserver

RDBMS

HTTP

HTTPHTTP

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Demonstration

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Conclusion

CPqD CPqD ISIG/WEBISIG/WEB

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Conclusion

It is possible to edit maps on the web,

using open standards

It is possible to build a reliable internet GIS system

totally Java / J2EE based

SVG can be used sucessfully for rendering maps

with great quality

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Conclusion

Future work:

• Adaptation of JavaScript code in order to use other

browsers, i.e. Mozilla Firefox 1.0 (Adobe SVG plugin)

• Migrate presentation code in order to use a browser

with native support of SVG.

Currently, Mozilla SVG (beta)

• Use other geographic databases

Data adaptation to use PostgreSQL / PostGIS

• Tests to improve performance of XML data traffic

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Questions

THANK YOU!

Gustavo Mandolesigustavom@cpqd.com.brPhone: +55 (19) 3705.4588

CPqD – Centro dePesquisa e Desenvolvimento

em TelecomunicaçõesRod. Campinas–Mogi-Mirim, km 118,5 – SP340

13086-902 – Campinas – SPBRASIL

www.cpqd.com.br

CPqD Technologies & Systems, Inc.101 NE Third Ave – Suite 1500

Fort Lauderdale, FL 33301, USAwww.cpqdusa.com