A project is underway to map die indoor radon potential for New York State at the township level. Through a detector distribution program the New York State Department of Health has a database of over 36,000 basement screening measurements. The address field for the indoor measurement data is being linked to latitude and longitude coordinates using data files containing coordinate information. ...

Geographic information Systems (GIS) square measure an honest tool for group action completely different form of spacial info. Its provides fast analysis and correlation of assorted geographical contexts. This method planned collects the data and integration marine data kind satellite pictures. This method automatic collects the surface location of the target. The system gets all info concernin...

Geographic information systems (GIS) have developed in response to a range of needs, and provide highly structured environments for working with particular classes of information. The environment and structure of a GIS is defined by its data model; the paper reviews the basic data models of GIS. The needs of discrete transportation modeling have led to a number of extensions of the basic data m...

Geographic information systems (GIS) education is at a crossroads in the United States. Since its inception in the early 1990s, GIS has diffused slowly into select groups of K-12 classrooms through the efforts of geography and environmental educators. However, many of the assumptions underpinning the initial period of enthusiasm for the technology are now being questioned. This paper reviews is...

The value of geographical information systems and remote sensing as tools for land and resource management is now widely recognised and their application well documented. Better integration of the technologies offers the potential, however, for developing more powerful and useful tools for land and resource management. This paper focuses on the integration of image data with geographical inform...

Several different trends in the 1990s have led to increased efforts to improve the alternatives to driving. In response, planning agencies have been taking a new look at both transportation and land use policies in an effort to enhance transportation choices. Their efforts have been hampered by a lack of practical planning tools. What's needed are practical measures of accessibility that can be...

Recently, the challenge of making geographic data available for analysis tasks also on the Internet has motivated the development of Web Geographic Information Systems (Web GIS). This term is referred to all the software products and services that allow geographic information to be accessed in different ways, by adopting Web technology. In this paper we describe a Web GIS developed for handling...

Heterogeneous information systems can make data and process operations by means of a functionality called interoperability. Geographic information system (GIS) interoperability is based on two factors: the increasing use of such systems in companies and the need to supplement their information—when generated in isolation from heterogeneous GISs, leading to coupling troubles. Major initiatives i...

Before addressing the diverse functionalities that can be found in Geographic Information Systems (GIS) today, a definition of a geographic information system, its purpose, and its general architecture shall be given. The different forms of GIS that are found in today’s ever-expanding range of information technology tools will therefore be discussed in Sect. 6.1. The core of each GIS is constit...

Usability of web-based geographic information systems (GIS) applications is very important because these applications are mostly focused on end users, i.e. on people who may have only a very limited knowledge of GIS, if any. Many various usability evaluation methods have been developed. Some of them involve real users or their representatives, some of them are based only on GIS experts evaluati...