Prototype of interactive Web Maps: an approach based on open sources

Abstract

To explore the potentialities available in the World Wide Web (WWW), a prototype with interactive Web map was elaborated using standardized codes and open sources, such as eXtensible Markup Language (XML), Scalable Vector Graphics (SVG), Document Object Model (DOM) , script languages ECMAScript/JavaScript and “PHP: Hypertext Preprocessor”, and PostgreSQL and its extension, the PostGIS, to disseminate information related to the urban real estate register. Data from the City Hall of São José - Santa Catarina, were used, referring to Campinas district. Using Client/Server model, a prototype of a Web map with standardized codes and open sources was implemented, allowing a user to visualize Web maps using only the Adobe’s plug-in Viewer 3.0 in his/her browser. Aiming a good cartographic project for the Web, it was obeyed rules of graphical translation and was implemented different functionalities of interaction, like interactive legends, symbolization and dynamic scale. From the results, it can be recommended the use of using standardized codes and open sources in interactive Web mapping projects. It is understood that, with the use of Open Source code, in the public and private administration, the possibility of technological development is amplified, and consequently, a reduction with expenses in the acquisition of computer’s program. Besides, it stimulates the development of computer applications targeting specific demands and requirements.

Keywords

• Web maps
• Internet
• Open Source
• Interaction.