Geospatial Information System GIS Lecture 1

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Geospatial Information System (GIS)Lecture 1

• University of Notre Dame
• Center for Research Computing
• January 29th, 2009

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Overview

• Introductions
• Office Hours and Help Outside of Class
• Course Outline Objectives
• Lab Setup
• Accessing ArcGIS (in this lab or on your laptop)
• Lecture 1

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Instructor Introductions

• Ed Bensman ebensman_at_nd.edu    
• Office hours  Monday 130-230p.m. 
• Room 122 ITC
• Phone [phone]
• Dilkushi Pitts dpitts_at_nd.edu  
• Office hours Wednesday 230pm 430pm   
• Room 111A ITC
• Phone [phone]

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Class Introductions

• Introduce yourself
• Faculty, Student or Staff?
• Where do you work or what program are you in?
• What is your interest in GIS?

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Course Outline

• Lecture 1 Course Overview and GIS Basics
• Lecture 2 Creating maps features
• Lecture 3 Projections Data Transforms
• Lecture 4 Attribute Tables
• Lecture 5 Spatial Data
• Lecture 6 Remotely Sensed Data
• Lecture 7 Creating Graphs, Maps, Documents
• Spring Presentations (date/time/location TBD)

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Course Objectives

• Combine theory and practical assignments
• Plan undertake a GIS project
• Learn ESRI ArcGIS software
• GIS is a growth sector in the U.S. economy
• Intro to GIS, map projections, data integration,
  types of spatial data and the tools, technology,
  and utilities available to work with spatial data
• Provide a venue to present your work (optional)

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Lab Setup

• Follow the instructions on the sheet provided
• Raise your hand if you need assistance

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Accessing ArcGIS

• In the lab, click on
• Start ? All Programs ? ArcGIS
• .then one of the ArcGIS programs
• ArcCatalog
• ArcGlobe
• ArcMap
• ArcReader
• ArcScene

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Accessing ArcGIS

• You can also access ArcGIS from your laptop,
  desktop PC or workstation after downloading the
  software
• See Ed Bensman during break or after class for
  details on how to download and install on a
  University owned computer
• Brief demo of how this works

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Lecture 1

• What is GIS?
• Basic GIS Functions
• Capturing
• Storing
• Querying
• Analysis
• Display
• Output
• Project Discussion Data Needs

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What is GIS?

• Geographic (or Geospatial) Information System(s)
  -- GIS
• Integrates hardware, software, and data for
  capturing, managing, analyzing and displaying all
  forms of geographically referenced information
  (source http//www.gis.com/whatisgis )

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3 Views of GIS Data

• Database
• View
• Map View
• Model View

Source http//www.esri.com
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Basic GIS Functions

• Capturing
• Maps
• Coordinates
• Digital Data
• GPS
• Sensor Network Data

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Basic GIS Functions

• Storing
• Vector Data
• Points - individual houses, stores, buildings
  (locations)
• Lines streets, networks, etc.
• Polygons -- plots of land, neighborhoods, houses
  (zoomed in)
• Raster Data
• GIF, TIF, JPG
• Other
• Map Scale determines shape size of features

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Vector Examples
Source http//www.esri.com
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Map Scale
city
Large scale Smaller area More detail
1500
124000
city
Small scale Larger area Less detail
1250000
124000
Source http//www.esri.com
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Basic GIS Functions

• Querying
• Identifying Specific Features on a Map
• Roads
• Bridges
• Counties
• Identifying Features based on Conditions
• Counties with population gt 300,000 people
• Counties with an area of gt ______ square miles

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Basic GIS Functions

• Analysis
• Proximity
• Parcels of land within ____ feet of a road
• Overlays
• Building Type Owner Square Footage
• Network
• Roads
• Utilities
• Etc

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Basic GIS Functions

• Display

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Basic GIS Functions

• Output

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GIS Layers

• GIS works on the concept of layers

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3 Components of GIS
Attributes
Behavior
Geometry
Streets and highways may not intersect
Source http//www.esri.com
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Relationships of Various GIS Features

• Topology mathematically models connectivity,
  adjacency, and coincidence
• Cities belong to groups called States
• Highways connect City X to City Y

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ArcGIS Family of Tools

• ArcView
• ArcEditor
• ArcInfo
• Each tool listed above has increasing
  functionality down the list

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ArcToolbox

• Numerous features new in ArcGIS 9.3

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Questions?

• Next well go into the lab section of this class