The
basic question that might arise in the mind of a newcomer in the field
of GIS would be what is GIS and its basic components. Here in this
section we will discuss in detail the definition and the components of
GIS.
A
Geographical Information System (GIS) integrates hardware, software and
the data that is used for capturing, analyzing, managing and displaying
the various forms of geographically referenced information.
It
helps you to answer questions and solve problems only by looking at the
given data. The data is given in a form that is easily read and
understood. GIS allows you to view, understand, interpret and visualize
the data in some particular ways through which you can derive patterns
in the form of maps, globes and charts.
In
the emerging technology paradigm, GIS has come up as a powerful tool
which has the potential to organize the complex spatial environment with
tabular relationships. It is one of the most important tools that can
be used to handle the day to day work, enabling one to make maps
quickly. The maps are high on the information content and descriptive in
every manner. The information in the maps can further be analyzed and
can be used for decision-making.
Geographical
Information System (GIS) enables you to generate two or
three-dimensional images of an area, displaying the natural features
such as hills and rivers with some artificial features such as roads and
power lines. The GIS experts and scientists use the patterns given by
GIS as modules and using these modules they make estimation of the
measurements, gathering some information that might be used by a layman
for any kind of reference.
All that a newcomer needs in the field of GIS is effective training. Geospatial Training Services help him to understand the concepts that are commonly used in making patterns of maps or globes.
The
GIS database comprises of sets of information called layers, each of
which represents a unique type of geographic data. For example, one
particular layer may include the information based on the streets of an
area. Another layer may have information on the soil of that area and
the third one records various elevations that are observed in the area.
The GIS can integrate all these layers and make it one image that shows
how the streets, soil and the elevations relate to one another. A GIS
database can include as many as 100 layers.
One
of the most powerful things about GIS that deserves a special mention
is the way one can use the data that is on the servers in the maps
without even bothering to download the data. You can access high
resolution aerial photographs and use them as backgrounds on the maps
without spending hours to download the huge files. Thousands of
organizations including businesses, governments, educators, scientists
and natural resource groups make use of GIS to solve problems and to
improve processes.A job oriented training service is needed for better
understandig of GIS and with this maximum number of people can make use
of this and understand the theory of GIS.
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