Spatial Information Technology
The word spatial is derived from the word space. The spatial information technology refers to the features and phenomena distributed over a geographically definable space. The Spatial Information Technology relates to the use of technological inputs in:
Analysing the spatial information
Thus, we get to know that Spatial Information Technology is an amalgamation of the following:
GPS (Global Positioning System)
GIS (Geographical Information System)
Digital Cartography, and
Database Management Systems
GIS is an amalgamation of Computer Assisted Cartography and Database Management System. It draws conceptual and methodological strength from spatial and allied sciences. We can say that, GIS is a collection of tools to build, maintain and use electronic maps and the associated databases. It is layered mapped information in a computer to help us view our world as a system and not in isolation.
GIS is a useful tool in locating the following:
Physical infrastructure like, water and sewer pipes
Areas, like land use
Incidents, like crime statistics
Quantities or densities, like disease mortality rate
GIS has many features that give it an edge over the maps. We can easily retrieve the attribute information of the displayed spatial features. With the help of GIS, maps can be drawn by querying or analyzing the attribute data.
Spatial operations can also be applied on an integrated database to give a new set of information.
The following sequence of activities is involved in GIS related work:
Spatial Data Input
Entering of the Attribute Data
Data Verification and Editing
Spatial and Attribute Data Linkages