Web Enabling GIS

A Geographic Information System (GIS) is a computer-assisted system for the acquisition, storage, analysis and display of geographic data. Like any other information system, GIS is also primarily an input-output system and includes DBMS functions. It is different from conventional DBMS and information systems in the sense that every piece of information has to be directly or indirectly associated with a location on the earth’s surface expressed as coordinates in any coordinate system.

Rolta offers solutions that tie a customer's decision-making environment with complete GIS. We leverage our experience in supporting hundreds of GIS users with integration, customization and the development of customer-specific applications, including the web-enabling of existing GeoSpatial applications.

Rolta offers the following application development services:

• Enterprise and Web GIS applications 
• GeoSpatial data warehousing  
• Prototype development and interfacing           
• Documentation
• Performing real-time GIS analysis – anytime, anywhere
• Analyzing data, spatial and non-spatial
• Building on your current assets
• Writing to your database from a remote location
• Leveraging the power of network objects
• Powerful technology

Web-based GIS helps in visualization and analysis solutions that enable you to manipulate your enterprise’s geographic information. You can analyze your GIS online – no matter where your data resides or what format it takes. Distributing GIS information to a wider audience on the Web will add overall value to the organization.

Need for Web GIS

The traditional model for a GIS assumes that the system consists of a single software package, plus data, on a single machine. This model is no longer applicable for many GIS projects, which today are often multi-agency, multi-disciplinary, multi-platform, and multi-software.

Large numbers of contributors may be involved, and there may be a large pool of potential users. These users may require not only maps, but also many forms of outputs like documents and charts. Moreover, they are likely to require access to the most current data available and not copies that may be months, or even years, old. A central practical issue therefore is how to provide widespread, device-independent, access to a GIS for large numbers of contributors and users.

Advantages of Web GIS

• This technology enables us to have centralized base-map data, which are large enough to be on individual systems.
• When the GIS data is centralized, it can be managed easily and everyone has access to changes as soon as they are updated.
• The Web is the ideal medium to share spatial and non-spatial information.
• Evolved Web-based GIS has given rise to e-governance for those administering information at the government level.