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GIS
Solutions GIS
is a tool that is used to Display and Analyze spatial data (Maps), where each
element in the map contains some attribute data, which is stored in a
relational database. So there is one to one relation between spatial data
& attribute data. This connection is what gives GIS its power: maps can be
drawn by querying the database and data can be referenced from the maps. When
a database is updated, the associated map can be dynamically updated as well.
GIS databases include a wide variety of information: geographic, demographic,
social, political, environmental and so on. Digital Mapping: - Many
GIS applications are based on vector technology, so vector formats are the
most common. They are also the most complex because there are many ways to
store coordinates, attributes, attribute linkages, database structures, and
display information. To
get vector data the Analog (Paper or Mylar) maps are to be converted into
Vector format.For this following procedure is adopted : The
Map is scanned in a scanner as Image files. These
image files are then Geo-referenced . Digitization
is done over these Geo-referenced raster
in a GIS software to get vector data (Line, Point and
Polygon).Different geographical features are converted to individual themes.
In this way a Digital map is prepared from Analog map. Attribute
Data Management: - A
Digital Map without relevant attribute data is of no use so data needs to be
attached with different features. For example a polygon representing a lot
should contain attribute data like Owner’s name, Address, Telephone No, Tax
No etc .If the data base is previously prepared then each row of data needs to
be attached with corresponding features. So these data base Preparation,
Attachment, linking are done in this step. GIS software packages maintain
internal links tying each graphical map entity to its attribute information.
The nature of these links varies widely across systems. In some, the link is
implicit, and the user has no control over it. Other systems have explicit
links that the user can modify. Links in these systems take the form of
database keys. Each map feature has a key value stored with it; the key
identifies the specific database record that contains the feature's attribute
information. Utility
Mapping: - In
an application of complete GIS a successful utility must take maximum
advantage of each of its considerable resources, from people to equipment to
information. Integrating geographic and other corporate data to make maximum
use of this valuable asset has become absolutely vital. A GIS based system can
be developed to manage this kind of information and to making
it accessible to people throughout an organization. GIS technology
gives various types of utility tools to analyse the information to get more
customer-focused, more competitive result to compete in an ever-evolving
marketplace. This type of mapping is used by Planning and development agencies
and regulatory bodies: local, regional and state.
Geographic
Analysis: - Data
integration and conversion are only a part of the input phase of GIS. What is
required next is the ability to interpret and to analyze the collected
information quantitatively and qualitatively. One of the most exciting aspects
of GIS technology is the variety of different ways in which the information
can be presented. Before commencing geographic analysis, one needs to assess
the problem and establish an objective. The analysis requires step-by-step
procedures to arrive at the conclusions. Following are some of the
Geographical analysis :
Digital
Terrain Modeling: - It
is the creation of a 3d model of a Geographical area .It represent
the earth surface and its properties accurately
with respect to its height from a reference level (eg sea level ). A
digital terrain model can be viewed in two different ways:
Isolines
join points of equal value(eg height)
on a surface. The shading defines bands, including all heights, between
the isolines. AM/FM:
- AM/FM
utilities are branching out beyond the inventory and
placement of assets and facilities needed for tracking. Now they need
additional layers of information, such as customers, competitors, and
operational performance of their networks, presented graphically to speed
decision-making. Management of modern cities and urban centers requires
resource information of the locality.
Local government offices and private business managers need to have
easy access to all types of public data for research and planning purposes. As
GIS systems evolve and improve, new solutions offer greater functionality. Web
GIS: - Now
a days one can not neglect internet so also GIS technology .GIS is now being
implemented through internet which is known as Web-GIS. The basic aim of web
GIS is getting all the functionalities & analytical capability of a
Desktop GIS system through an internet browser. So a person does not need a
GIS software but only a system with Internet browser with internet connection
so that he can log on to a remote server & get all the data as well
analysis. One of the simplest case of Web GIS is finding location with
direction of a remote place through internet. Some of the more complex
applications are : Automated Vehicle Tracking, Finding a suitable path between
two points .etc. About us | Services | Experience | Career | Download | Contact us |
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