Mobile GIS

CHAPTER 1: GIS AND THE INFORMATION AGE

The Information Age:The world changing and the methods of meeting the needs of those changes are also changing.

in the past, data was analog, mostly written or typed , stored on paper, information was independent, seldom integrated with other data outsides its original

computers and other electronic equipments such as satellite are the machinery of new economic and couture

Data and information are the currencies of the information age , the internet became the major communication medium

GIS is a central component in the environmental information system

Technology change , stage of acceptance :

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Mobile GIS

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Mobile GISTechnologic ChangeTechnologic Change

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Stages of acceptance

Reluctance Adopt(التردد في القبول)

Cautious Acceptance ((القبول الحذر

Full Use

Innovative Use (اإلستعمال اإلبداعي)

Mobile GISValue of Data & Information Value of Data & Information

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What it is the value of information?

How important is it ?

What it can be used for?

GIS can be perceived as a technology but ( what are the economic, and social benefits ?

Mobile GIS

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Mobile GISData visualization

•Visualization is the presentation of data in graphic form

•The map gives the best impression of what the information means

•Computer technology enhances visualization by offering sophisticated techniques of changing data into pleasing and understanding display.

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What is GIS?

•GIS: A computer based technology and methodology for collecting , managing, molding, and presenting geographic data for a wide range of applications.Geography: the real world : spatial realitiesInformation: data and information , their meaning and useSystems: computer technology and its support infrastructures.

Mobile GIS

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GIS Description

GIS has a numerous functions , its primary roles presented in the following, dealing with geographic data from input to output:

Collection : gathering data from many sources , including global communications media, the remote sensing satellite ,the digitization table is for converting paper map into digital computer map, and other sources

Mobile GIS

GIS Description, Cont• Storage and management:

Efficient digital storage is necessary , administration and keeping track of data,

including integration of various types of data sets into a common database,

Database management is replacing the physical map

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Mobile GISGIS Description, Cont

• Retrieval: Easy and efficient selection and viewing of

data in a variety of ways , monitors, printers, and internet.

• Conversion: changing data from one form to another , or map format to match another

• Analysis: analyzing data to produce insight and new information using various techniques

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GIS Description, Cont• Molding: simplifying the data to understand how

things work or to explain what the data means , a generalization of data or a simple explanation of reality

• Display: presenting data in various ways (such as maps, graphs, and reports) for easy understanding.

Mobile GIS

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Mobile GISGIS ProjectGIS Project

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A GIS project is the foundation of GIS work, it consists of at least one central database, and graphic presenting features and themes.

Theme is a layer of data made of one or more features (geographic objects) of a similar topic

Mobile GIS

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GIS Project, Cont GIS Project, Cont A GIS project organize many types of data

into a common structure , GIS data comes from many sources

Maps: the most common type of geographic data

GPS(global position system): A special satellite system that provides highly accurate locations and elevation data from anywhere in the world

Mobile GIS

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Global Positioning System

Mobile GIS

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Global Positioning System• Where on earth am I ?

Constellation of satellites

Handheld devicesVarious ApplicationsAccuracy

What is GPS?

Mobile GIS

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GIS Project, Cont GIS Project, Cont Imagery: Remote sensing such as satellite

or aircraft digital imagery , provides a major source of GIS data, this can include scanned pictures

Reports: text data that dealing with spatial subjects

Tabular data: lists of numeric data , such as descriptive, census, or economic

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GIS Project, Cont GIS Project, Cont After the project has been assembled

(which sometimes can require 75% or more of the project time), other GIS work begins , such as analysis, molding , and presentation

Mobile GISGIS InfrastructureGIS Infrastructure

There at least six primary components of GIS , which presented by a pyramid , for the important from the bottom up.

• Organization and people : the most important part of a GIS structur

• Applications: the uses, the purpose for its productions

• Methodology: the procedures , and ways of using GIS

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Mobile GIS

• Data: is the heart of GIS operations • Software: the computer programs

needed to run GIS • Hardware: the machinery on which GIS

operates.

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GIS Infrastructure, ContGIS Infrastructure, Cont

Mobile GIS

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Mobile GISGIS Hardware ComponentsGIS Hardware Components

• Data input: copy maps, keyboard, Cd’s, tape reader, scanner, GPS, and networks

• Data management and analysis: many types of computers , and other types of devices

• Output : printers, and plotters (common mapping devices)

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Thank you