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Introduction to ArcGIS -1


									School of Geography

 Introduction to ArcGIS

• Does everyone have ArcGIS on their desktops?
• Who uses ArcGIS regularly?
• If so, what is your main use of GIS?
• What would you like to be able to do?
What is GIS?

• Many definitions available
 • System for display, storage, mapping, analysis of spatial data

• Many acronyms for GIS
 • Geographic Information Systems
 • Geographic Information Science
   • Body of Knowledge
 • Geographic Information Services, etc.
 History of ArcGIS

            Arc/INFO (Unix)
  1969            1982          1989 PC Arc/INFO (DOS + Windows)
Jack Dangermond
 founds ESRI
                           ArcView + Arc/INFO

                                         1999 ArcGIS v.8.0
                                                  (to v8.3)
              ArcView 3.3
            “retired product”
                                          2004                  2008
                                       ArcGIS v.9.0           ArcGIS v.9.3
Overview of Applications

   ArcGIS Server
                                      ArcGIS Engine

                     ArcGIS Desktop

     ArcReader                        ArcGIS Mobile
   ArcGIS Explorer                       ArcPad
Overview of ArcGIS Desktop

• ArcGIS Desktop has three levels of licensing:
  • ArcView
    • Mapping + geoprocessing + data management
  • ArcEditor
    • ArcView + additional editing + additional geoprocessing
  • ArcInfo
    • ArcEditor + advanced geoprocessing + extensive
      database management + high-end cartography
ArcGIS Desktop Components

• ArcCatalog
• ArcMap
• ArcToolbox
• Extensions
 • 3D Analyst, Spatial Analyst, Network Analyst, Geostatistical Analyst,
   Crime Analyst, ArcGIS Schematics, Business Analyst, PLTS, Data
   Interoperability, Tracking Analyst, ArcGIS Publisher, Survey Analyst,
   ArcScan (included with ArcEditor license), Maplex (included with
   Arcinfo license)
Data Models - 1

• How we represent real world
  spatial phenomena
• Two main models:
 • Vector
   • Points (single x,y coordinate)
   • Lines (strings of x,y coordinates)
   • Polygons (closed string of x,y coordinates)
 • Raster
   • A grid of (often) square-shaped cells
   • Individual cells together are used to create a
     layer of points, lines and areas
Data Models - 2

• Other models:
 • Surfaces for 3D visualisation
 • Networks (geometric, transportation)
ESRI Data Formats

• Coverages (vector) and GRIDs (raster)
   • Consists of two folders:
      • name of coverage or grid
      • INFO directory
• Shapefiles
• Geodatabases
                         Examples of coverages in Windows File Explorer

<filename>.shp   stores the spatial or feature information

<filename>.dbf   dBASE file contains attribute information about the
                 spatial features
<filename>.shx   stores the index of the features

<filename>.sbn   stores the spatial index of features

<filename>.sbx   also stores information pertaining to the spatial index
                 of features

<filename>.prj   contains projection information

•   Core ArcGIS data model
    • A comprehensive model for representing and managing geographic data
•   Personal Geodatabase
    • Single user editing / multiple readers
    • Stored in MS Access                                       ArcGIS
    • Size limit of 2 GB
•   File Geodatabase                                                           ArcSDE
    • Single user editing / multiple readers
    • 1 TB per table
                                                   Personal         File        ArcSDE
    • Reduced storage requirements
                                                  Geodatabase   Geodatabase   Geodatabase
•   ArcSDE Geodatabase                                                           Oracle
    • Stored in an Enterprise DBMS                                             SQL Server
    • Supports multiuser editing via versioning                                 Informix
    • Requires ArcEditor or ArcInfo to edit                                   PostgreSQL

• these formats are comprised of many files so you need a GIS data
management system
  The ArcCatalog Interface
 1 Title bar                     4 Standard toolbar

2 Location                                    5 Dockable toolbars

 3 Metadata

                   6 Catalog

                                 7 Geography Preview Mode
Catalog Tree

• Icons identify data types
• Right-click of a context menus
• Supports drag, drop, copy, paste
• Displays folder connections
• Displays other connections
   • ArcSDE databases
   • Web servers (internal, ESRI)
Different Views – Contents Tab
Preview - Geography
Preview - Table View
Metadata View
Management tasks

• Copy, paste, delete, rename data
• Move to other locations
• Create new objects
• Connect to folders
Searching for Data

• Edit  Search
• can search for geography or metadata
• can search using different parameters
 • Name + physical location
 • Geography
 • Date
ArcCatalog Options

• Tools  Options
• Manage ArcCatalog’s content
and behaviour
 • Add new file types (e.g. ppt)
 • Set font characteristics for tables
 • Set geoprocessing environment
 • Set metadata defaults

• Descriptive information about data
  • Content
  • Quality
  • Condition
  • Origin
  • Other characteristics
• But do you really need it?
  • All GIS resources need metadata
    • Spatial data
    • Non-spatial data
Metadata in ArcCatalog

• one-stop shop for all your metadata needs
• can create metadata for anything visible in the catalog
• ArcCatalog has the tools for working with it
  • ToolsOptions Metadata tab
  • Metadata toolbar for working with metadata
Metadata Components

• Documentation: metadata elements
  the user can edit
 • Abstract
 • Purpose
 • Use constraints
 • Etc.
• Properties: elements that update
 • Names and types of attributes
 • Coordinate system information
 • Bounding coordinates
 • Etc.
Metadata Standards

• GEMINI v.2.1 is the UK metadata standard (Oct 2007)
• based on ISO19115
• to meet the requirements for metadata of the EU INSPIRE
Create and update metadata

• Automatically
 • Created first time an item’s metadata is viewed
 • Updated whenever metadata is viewed in metadata tab
 • Edit metadata button

• Manually
 • Tools  Options  Metadata tab
 • Create / Update metadata button
 • Choose your stylesheet here
Metadata Editor
More Information on Metadata

• Sample code or custom applications to automate metadata
  production from the ESRI Developer Network
• – find resources for ArcGIS 9.2 and prior
  and in Code Exchange, enter “metadata”)
  • Metadata SpellChecker
  • Edit Metadata in ArcMap
  • Create Metadata for All in Folder
  • Metadata Quick Editor (executable file)
  • Template Exporter
  • Etc.
In Summary

ArcCatalog allows you to:
• Browse, manage and find spatial data
• Record, view and manage metadata
• Search for GIS data on local drives, networks and the Web
• Define, import and export geodatabases and other datasets
• Create and manage the schemas of geodatabases
• Administer ArcSDE geodatabases
• Administer an ArcGIS server
An Introduction to ArcCatalog

      Hands-on Exercise #1
  The ArcMap Interface
4 Standard

                          3 Main Menu Toolbar

                                                                5 Tools

             1 Table of

                                                2 Map Display

6 Drawing
    Adding Layers
•   Use the Add Data button
•   Search for data in ArcCatalog and slide the data into ArcMap
Right-click: Context Menu
Tools Toolbar

                 Zoom in     Zoom out
 Zoom in to a fixed extent   Zoom out to a fixed extent
                     Pan     Go to full extent
    Go to previous extent    Go to next extent
          Select features    Clear selected features
         Select elements     Identify
                     Find    Go to X-Y coordinate
                Measure      Hyperlink
An Introduction to ArcMap

      Hands-on Exercise #2

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