GIS (Geographical Information System) - Part 2

Go back Gunjan Sharma
Expert in Geographical Information System

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As specified in previous addition of this series; GIS (Geographical Information System) is a computer system of hardware, software, and procedures designed to support capturing of data through satellites, management,   modification,   analysis,   modeling, and display of spatially referenced data for solving complex planning and management problems.

What Makes up a GIS?


Raster and vector are the two basic data structures for storing and manipulating images and graphics data on a computer.

Vector data comes in the form of points and lines that are geometrically and mathematically associated. Points are stored using the coordinates, Raster images come in the form of individual pixels, and each spatial location or resolution element has a pixel associated where the pixel value indicates the attribute, such as color, elevation, or an ID number. (Information Source Geo Infosys Team)

Benefits of GIS

The technology of the Global Positioning System is allowing for huge changes in society. The applications using GPS are constantly growing.  There are myriad applications that will benefit us individually and collectively. The affects on society are:

  1. More reliable and accurate measurements
  2. Less costly to corporations - since the error removing equipment will no longer be needed
  3. More affordable and accessible to consumers
  4. Greater incentive for the development of new uses

GIS has different categories & mapping areas, as we had mentioned in previous addition of the article and Defense Mapping is one of them.

Defense Mapping

Defense Mapping supplement streamlines GIS data and map production for defense mapping agencies and contractors by providing tools that enable specialized data collection and attribution, geo-database maintenance, data validation, and the production of standardized defense cartographic products. Defense Mapping provides the geo-database models, topologies, business by laws, cartographic representations, and map templates required for many defense mapping outcomes or products, including Topographic Map, Multinational Geospatial Co-production Program, Image City Map, and more.

Posted by : ajay kumar kushwaha

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