ArcGIS Online is a unified Web portal designed by Environment System Research Institute (ESRI). It contains a rich collection of Web maps, layers, and services contributed by GIS users throughout the world. The metadata about these GIS resources reside in data silos that can be accessed via a Web API. While this is sufficient for simple syntax-based searches, it does not support more advanced q...

Rapid urbanization in developing countries has been observed to be relatively high in the last two decades, especially in the Asian and African regions. Although many researchers have made efforts to improve the understanding of the urbanization trends of various cities in Asia and Africa, the absence of platforms where local stakeholders can visualize and obtain processed urbanization data for...

The main objective of this research was to develop a web-based geographic information system (GIS) based on detailed analysis user preferences from the perspective forest research, management and education. An anonymous questionnaire used elicit for hardware platform evaluations web-mapping applications, data, GIS tools. Mobile slightly more often than desktop GIS. Web-mapping applications that...

• Web information extraction • GIS, moving objects and spatio-temporal data management • Data evolution and version management

This paper introduces a stack of three interrelated software tools that implement OGC standards to provide the primary required layers for web-based GIS applications. PostGIS is a sophisticated spatial-relational data base management system which supports a rich set of spatial object types and offers extensive capabilities for manipulating those objects, including queries about spatial relation...

INTRODUCTION There is a great concern on how to build up an interoperable health information system of public health and health information technology within the development of public information and health surveillance programme. Technically, some major issues remain regarding to health data visualization, spatial processing of health data, health information dissemination, data sharing and th...