UrbanPro
true

Take BTech Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

Geographic Information Systems

Shivaji Batta
17/05/2017 0 0

Geographic Information Systems: A Generic Definition

GIS is a special purpose digital database in which a common spatial coordinate system is the primary means of reference. Comprehensive GIS require a means of:

  1. Data input, from maps, aerial photos, satellites, surveys, and other sources
  2. Data storage, retrieval, and query
  3. Data transformation, analysis, and modeling, including spatial statistics
  4. Data reporting, such as maps, reports, and plans

Three observations should be made about this definition:

First:- GIS are related to other database applications, but with an important difference. All information in a GIS is linked to a spatial reference. Other databases may contain locational information (such as street addresses, or zip codes), but a GIS database uses geo references as the primary means of storing and accessing information.

Second:- GIS integrates technology. Whereas other technologies might be used only to analyze aerial photographs and satellite images, to create statistical models, or to draft maps, these capabilities are all offered together within a comprehensive GIS.

Third:- GIS, with its array of functions, should be viewed as a process rather than as merely software or hardware. GIS are for making decisions. The way in which data is entered, stored, and analyzed within a GIS must mirror the way information will be used for a specific research or decision making task. To see GIS as merely a software or hardware system is to miss the crucial role it can play in a comprehensive decision making process.

 The GIS View of the World

GIS provide powerful tools for addressing geographical and environmental issues. Consider the schematic diagram below. Imagine that the GIS allows us to arrange information about a given region or city as a set of maps with each map displaying information about one characteristic of the region. In the case below, a set of maps that will be helpful for urban transportation planning have been gathered. Each of these separate thematic maps is referred to as a layer, coverage, or level. And each layer has been carefully overlaid on the others so that every location is precisely matched to its corresponding locations on all the other maps. The bottom layer of this diagram is the most important, for it represents the grid of a locational reference system (such as latitude

and longitude) to which all the maps have been precisely registered.

 gis classification

 Application Areas

One of the first major areas of application was in natural resources management, including management of

wildlife habitat, wild and scenic rivers, recreation resources, floodplains, wetlands, agricultural lands, aquifers, forests.

One of the largest areas of application has been in facilities management. Uses for GIS in this area have included

  • locating underground pipes and cables,
  • balancing loads in electrical networks,
  • planning facility maintenance,
  • tracking energy use.
0 Dislike
Follow 0

Please Enter a comment

Submit

Other Lessons for You


How to Clear Engineering Mathematics
Clearing Maths is not a great deal. All you need to follow is just a small key. Take last three years question papers and start working out the sums. Do not leave the choices. work out all sums. thats...

how to write the answer
always highlight the key word of writing any answer without fail,also draw simple figure each and every answer related question accordingly.

Importance of Constructor's Visibility.
While developing program or implementing Singleton pattern we have learnt to mention constructor as private and known reason is -> to blocked its direct call from outside of class. But did we think...
M

Armature Core
It houses the armature conductors or coils and causes them to rotateand hence cut the magnetic flux of the field magnets. In addition to this, its mostimportant function is to provide a path of very low...

Looking for BTech Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for BTech Tuition Classes?

The best tutors for BTech Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take BTech Tuition with the Best Tutors

The best Tutors for BTech Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more