Lecture Contents
- History of GIS
- Definition of GIS
- Applications of GIS
- SCOPE & IMPORTANCE
G stands for geographic, so we know that GIS has something to do with geography. it implies that locations of the data items are known, or can be calculated, in terms of Geographic coordinates (Latitude, Longitude).
I stands for information, so we know that GIS has something to do with information, namely geographic information. it implies that the data in a GIS are organized to yield useful knowledge, often as coloured maps and images, but also as statistical graphics, tables, and various on-screen responses to interactive queries.
S stands for system, so we know that GIS is an integrated system of geography and information tied together. it implies that a GIS is made up from several inter-related and linked components with different functions. Thus, GIS have functional capabilities for data capture, input, manipulation, transformation, visualization, combinations, query, analysis, modelling and output.