intro arcgis
DESCRIPTION
an introduction to arc gis (geographical information system)TRANSCRIPT
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Introduction to GIS and ArcGIS
How a GIS works
Introduction to ArcGIS
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A GIS integrates five basic components
data
methodssoftware
people
hardware
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Data
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Types of datasets
Vector formats(“feature classes”)
Points
Lines (”arcs”)
Polygons
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Types of datasets
Raster formatsMatrices of square cells (grids, pixels)
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Types of datasets
Attribute tables: tables of data describing spatial features
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Methods
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Basic GIS Functions
CaptureStoreQuery
AnalyzeDisplayOutput
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Capturing data
Paper mapsDigital images
GPS output
Coordinate lists
GIS
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Query
Identifying features based on conditionsFind all trees with DBH > 35 cm
Identifying specific featuresWhere is parcel No. 2945?
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Analysis
Proximity : which roads are within a 100 ft from a stream
Overlay: combines the features of two or more layers to create a new layer (intersections, unions…)
Network: examines how linear features are connected
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Analysis
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Analysis
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Display
MapsGraphs
Reports/Tables
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Examples of GIS mapssurface drapes & 3-D modeling
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Examples of GIS generated maps
detailedtopographic maps
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Output
Paper map InternetImage (cc.jpg, cc.pdf)Document (cc.mxd)Poster
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How a GIS works
Introduction to ArcGIS
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What is ArcGIS?
ArcGIS Clients
Application/Data Servers
Components
ArcGIS DesktopEXTENSIONS
ArcGIS Engine
ArcObjectsArcObjects
RDBMS
ArcSDEArcSDE
ArcGIS ServerArcGIS Server ArcIMSArcIMS
EXTENSIONS
Network
ArcReaderArcReader ArcViewArcView
ArcInfoArcInfo
ArcEditorArcEditor
CustomApplication
CustomApplication
ArcPadArcPad WebBrowser
WebBrowser
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ArcGIS Desktop Products
Increased Functionality
ArcViewArcView
ArcInfoArcInfo
ArcEditorArcEditor
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The history of ESRI products
time
ArcInfo ArcView ArcGIS
ArcViewArcEditor
ArcInfo
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All ArcGIS products share common applications
ArcViewArcView
ArcInfoArcInfo
ArcEditorArcEditor
ArcCatalog-window to database
ArcMap-displaying
ArcToolbox-geographic processing functions
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What is unique about ArcGIS GIS?
•GUI (Graphic User Interface)
•Customization & Programming
•Extensions to Increase Functionality
•Scalability
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GUI
Beware:
The ArcGIS GUI is complicated and many-layered.
There is no command-line control; all automation must be scripted.
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Customization & Programming
• Many functions are not available from the GUI
• Custom functions and operations can be created with various programming languages
• Repetitive tasks can be automated
• New functions and operations can be added to the GUI menus, buttons, and tools
• Entire new applications can be developed
• But:
Scripting is not easy to learn
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Extensions -> Increase Functionality
Functionality not included in the core ArcGIS product can increase productivity
Some extensions are built-in, but just need to be enabled
Other extensions are available for free (web); some are available for sale
We will be using several extensions during the course
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Scalability
ArcObjectsArcObjects
RDBMS
ArcSDEArcSDEArcGIS ServerArcGIS Server
ArcIMSArcIMS
Network
ArcReaderArcReader ArcViewArcView
ArcInfoArcInfo
ArcEditorArcEditor
CustomApplication
CustomApplication
ArcPadArcPad WebBrowser
WebBrowser
ArcGIS Desktop
The ArcGIS suite contains
Desktop application
(we will be using this quarter)
Data server application (ArcSDE)
Application servers (ArcGIS Server)
Internet mapping servers (ArcIMS)
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GIS
soft
ware
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Ecological Applications: Vol. 17, No. 3, pp. 791–805
ASSESSING THE RISK OF IGNITION IN THE RUSSIAN FAR
EAST WITHIN A MODELING FRAMEWORK OF FIRE THREAT
Tatiana V. Loboda and Ivan A. Csiszar
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Homework
•Read: “What is ArcGIS9”“Exploring the ArcGIS interface”“ArcGIS GUI”“ArcGIS modules”
•Do: Assignment 1 and submit with “Collect-it”
•Check E-post regularly