G SThe World is Yours

Created By Ahmed El Atari

Geographical

nformation System

PlanIntroduction

I. History of GISII. What is GIS ?III. What is Geographical Data ?IV. GIS Process

1. Capture2. Manage3. Analyze4. Present

V. GIS ApplicationsConclusion

Introduction

Big Bang

Ancient HumanTravel

Map

History of GIS

1832

deaths by cholera per 1,000 inhabitants

Charles Picquet

Color Gradient Map“ France ”

History of GIS

John Snow

“ London”

Geographic methodology in epidemiology

1854

History of GIS

Water

Vegetation

Elevation

Structures

History of GIS

Plastic film

History of GIS

Roger Tomlinson

1960

Ottawa , Canada

Geographic information system ( G.I.S )

Geographic information system (GIS) is a system designed to capture, store,

manipulate, analyze, manage, and present all types of spatial or geographicaldata.The acronym GIS is sometimes used for geographical information science orgeospatial information studies to refer to the academic discipline or career ofworking with geographic information systems and is a large domain within thebroader academic discipline of Geoinformatics.,

Capture

Analyze Manage Present

Geographical data

Geographical data

Generally speaking, spatial data represents the location, size and shape of anobject on planet Earth.Spatial data may also include attributes that provide more information about theentity that is being represented.Geographic Information Systems (GIS) or other specialized software applicationscan be used to access, visualize, manipulate and analyze geospatial data.

Geographical data

Location / Position

Hei

ght

Size / Dimension

Shape

Geographical data

Floors / Rooms

The Name of the residence

Number of inhabitants

Geographical data

GIS Process

CAPTURE ANALYZE MANAGE PRESENT

Step 1 : Capture

Global Positioning System (G.P.S)

Step 1 : Capture

Digitalize & Georeferencing

Step 1 : Capture

Remote Sensing

Active

Passive

Step 1 : Capture

Photogrammetric Techniques

Step 2 : Analyze

Slope and aspect Address geocoding

Step 2 : Analyze

Examples :

ArcGis Quantum GIS MapInfo

Step 3 : Manage

DataBases

Step 3 : Manage

Examples :

PostGis MySql Oracle

Step 4 : Present

Printed Maps Dynamic or Interactive Maps

GIS Applications

GIS Applications

Crime mapping

GIS Applications

Hydrology

GIS Applications

Health Services

Conclusion

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