Document Sample
					             INTRODUCTION TO ARCGIS -
                  ArcGIS v9.X

11/21/2008          (c) Vicki Drake, SMC   1
Introduction to ArcGIS
   ArcGIS is a desktop Geographic Information System
   (GIS) developed by Environmental Systems Research
   Institute (ESRI), Redlands, California
   ArcGIS consists of ArcGIS, ArcEditor and
        All three products look and work the same –
        differing in their individual capabilities.
         • ArcEditor has more options than ArcGIS and
            ARC/INFO has more options than ArcEditor.
        ArcGIS is a GIS software program with an easy-to-
        use „point and click‟ graphical user interface (GUI)
        ArcGIS software loads spatial and tabular data to
        be displayed as maps, tables and charts

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Introduction to ArcGIS
     What can ArcGIS Do?
          ArcGIS is designed to link information (an
          attribute table, for example) to geo-
          referenced data
          ArcGIS is a desktop GIS that collects,
          organizes, and analyzes a variety of data.
          ArcGIS also creates reports and map
          products using a variety of spatial and non-
          spatial data

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Introduction to ArcGIS
  ArcGIS (ArcGIS, ArcEditor, ARC/INFO) have
  same three applications: ArcMap, ArcCatalog,
       ArcMap – application used to view data, query
       attributes, conduct spatial analysis and design maps
       ArcCatalog – application used to browse and
       manage spatial data, create and manage Metadata,
       and preview data
       ArcToolbox – application used to import and convert
       data, re-project geographic data and perform spatial

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Introduction to ArcGIS
  Optional Extensions that can be purchased
  from ESRI and added to the basic ArcGIS
  software program include:
       Spatial Analyst
       3D Analyst
       Network Analyst
       Image Analyst
       Tracking Analyst
       Business Analyst
       Internet Map Server Extension
       StreetMap and StreetMap 2000 extension
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Introduction to ArcGIS
   GIS Basic Terminology in ArcGIS
   Topology: spatial relationships between
   connecting or intersecting features that can be
   Raster: spatial information for real world
   features represented using homogeneous units
   (units called “cells”)
   Vector: spatial information for real world
   features or conditions represented by points,
   lines and polygons

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Introduction to ArcGIS
       Coverages: An ARC/INFO data file in which
       geographic features are stored as points, lines and
       polygons. Feature attributes for the geographic
       features are stored in associated INFO tables.
       Attribute: Information describing a map feature.
       In ArcGIS, attributes are stored in a separate table,
       usually in a database (*.dbf) file.
       Database: A collection of interrelated information,
       managed and stored together. In ArcGIS, a
       database will include data about the spatial location,
       shape and attributes of the geographic feature.
       Geodatabase: Collection of multiple feature
       classes, including tables not linked to spatial data.
       Store topological relationships
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Introduction to ArcGIS
     Layers: Store either the symbology or or
     specific representation of a dataset. Joins
     and relates are included in a layer file (*.lyr).
          Layers are linked to shapefiles
     Shapefiles: (*.shp) Data structure
     developed by ESRI. Non-topological structure
     with attributes linked to spatial features

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Introduction to ArcGIS
      Opening and Navigating ArcGIS
      The “ArcMap” dialog box will open and you
      may select either a
           “new empty map”
           “a template”
           “an existing map” - a browser window opens

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Introduction to ArcGIS
     The main document in ArcMap is the “map
     document”, stored as “*.mxd”.
     In ArcMap, maps are created within data
          layers and shapefiles are added to data frames
     The Map Document consists of two panels:
          The Table of Contents – left side
          Map Display (View) - right

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Introduction to ArcGIS
    All layers (shapefiles, tables, etc.) within a
    Data Frame are listed in the Map Document‟s
    Table of Contents
    Layers are contained within the active Data
    Frames (labeled „Layers‟ by default)
    Visibility of layers controlled by Visibility Check
         The layer expansion box opens to display
         symbology for layer.
    Context menus for each layer accessed
    through a right-mouse-click on layer name.
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Introduction to ArcGIS
     Display and Source Tabs at the bottom
     of Table of Contents
          Appearance of layers list changes
          depending on which tab is selected.
          Display – Name and drawing order of
          layers shown
          Source – File location of layers is shown.
          Select tab – Selectable layers will be shown
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Introduction to ArcGIS
     The Layer Properties dialog box can be
     accessed by:
     (1) double-clicking on the layer name
     (2) right-clicking on the layer name and
     the navigating through context menu.

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Introduction to ArcGIS
     Symbology tab – allow you to select the
     classification and appearance of features
     Fields – allows you to selectively „hide‟
     unwanted fields in the database
     General - Change layer name, source
     Definition Query – set parameters for layer

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Introduction to ArcGIS
     Labels – Add labels to streets, etc.
     Joins – Lists the joins and relates for
     layer‟s attribute table
     Display – sets transparency for layer,
     set up hyperlinks for layer

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Introduction to ArcGIS
     Layers organized within a Data Frame -
          Must share same coordinate system
          First layer added becomes default
          coordinate system for all other layers
     Default Data Frame labeled “layers”
     Multiple Data Frames are supported
     within one Map Document
     Active Data Frame name is bold
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Introduction to ArcGIS
     Viewing data in a Map Document
     Map Display – used for viewing, browsing,
     querying data
     Layout Display – Used to compose map, add
     map elements and export for printing
     Overview Window – Shows full extent of map
     – with current spatial extent outlined
     Magnifier Window – Acts as magnifying lens
     moving over map

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Introduction to ArcGIS
     Adding Data
          Data can be added to your Map
          Document in many ways
              • File>Add Data – from Menu
              • Using the Add Data menu button
              • Directly from ArcCatalog – drag dataset into
                your open map document

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Introduction to ArcGIS
     ArcMap Toolbar
          The top eight tools are navigational tools to
          change view on data
          Zoom in, zoom out, pan, full extent – change how
          data is displayed
          Graphics selected and moved, identified, „find‟ tool
          for text searches, “measure” tool for distances
          Hyperlink tool for access linked documents –
          images – graphs - text

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Introduction to ArcGIS
    ArcCatalog Basics
    Organizes and manages GIS data – similar to
    Microsoft ® Windows ® Explorer
    Function include copying and deleting
    shapefiles, coverages and GRIDS
    Catalog tree used to navigate to data folder
    Three ways to preview data:
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                                    – Typical ArcCatalog
                                      with catalog tree on
                                      left and catalog
                                      display on right

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                             Right-clicking on
                             data in the catalog
                             display brings up a
                             context menu and
                             access to specific

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Introduction to ArcGIS
     ArcToolBox Basics
     Provides access to tools and functions
     Imports and exports datasets, re-
     projects data

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Toolbox: Analysis Tools, Cartography Tools, Conversion Tools, Data
Management Tools, Geocoding Tools, Linear Referencing Tools, Spatial
Statistics Tools

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